Effects of Site and Age Group on Leaf Ecology Stoichiometric Characteristics of Cupressus funebris Plantations in Sichuan Province

doi:10.7525/j.issn.1673-5102.2021.05.015

Abstract

Abstract:

The experiment was conducted to study the leaf C， N， P stoichiometric characteristics of Cupressus funebris plantations in Sichuan Province and their responses to site change and age group for understanding the leaf nutrient distribution patterns of C. funebris in different age groups and site types. In order to determine the effects of site and age group on the leaf stoichiometric characteristics of C. funebris plantations， 70 standard plots were selected for the site classification in the main distribution areas of C. funebris plantations. Leaves from different age groups（young stand， half-mature stand， and near mature stand） of C. funebris werecollected， and the C， N， P contents of leaf were measured respectively. The plots were classified into 2 site type districts， 4 site type groups， 8 site type subgroups and 17 site types. The average leaf C， N， P contents of C. funebris in Sichuan were（550.55 ± 18.08） g·kg^-1，（9.39 ± 0.20） g·kg^-1，（0.95 ± 0.12） g·kg^-1， and the C∶N ratio， C∶P ratio， N∶P ratio of which were 58.70 ± 3.04， 583.68 ± 44.59， 9.93 ± 0.37， respectively. Leaf C， N， P contents and C∶N， C∶P， N∶P ratios were all affected by site type and age group significantly（P<0.05）. Within the same age group， the leaf C content， C∶N ratio and C∶P ratio of C. funebris in the mountainous site type district were significantly higher than those in the hill site type district； in the acid purple soil site type group were significantly higher than those in the calcareous purple soil site type group in each district； in the lower slope site type subgroup were significantly higher than those in the middle and upper slope site type subgroup and the top slope site type subgroup in each group of hill site type district； in the thin soil site type of hill site type district were significantly higher than those in the medium soil site type； in the sunny slope site type subgroup were significantly higher than those in the shady slope site type subgroup in each group of mountainous site type district； and in the groove site type of mountainous site type district were significantly higher than those in the slope and ridge site type， however， the leaf N and P contents of C. funebris showed the opposite trends. Within the same site type， the leaf C content， C∶N ratio and C∶P ratio increased continuously， and the N and P contents decreased continuously from the young stand to the near mature stand. The growth of C. funebris plantations may be restricted by N and more obvious in the early growth stage. In summary， we suggested to cultivate the C. funebris plantations in the site conditions such as the combination of “acid purple soil in groove on sunny slope of mountain” or “thin acid purple soil on lower slope of hill”， and apply N fertilizer in early growth stage to alleviate the possible nutritional restrictions.

Key words: ecology stoichiometry, Cupressus funebris plantation, leaf, site type, age group

CLC Number:

S718.5

Si-Meng SONG, Yang ZHOU, Jian ZHANG. Effects of Site and Age Group on Leaf Ecology Stoichiometric Characteristics of Cupressus funebris Plantations in Sichuan Province[J]. Bulletin of Botanical Research, 2021, 41(5): 760-774.

Figures/Tables 10

Table 1

Fig.1

Table 2

The result of site type classification of C. funebris plantations in Sichuan province

立地类型小区 Site type district	立地类型组 Site type group	立地类型亚组 Site type subgroup	立地类型 Site type	土壤理化性质Soil physical and chemical properties
立地类型小区 Site type district	立地类型组 Site type group	立地类型亚组 Site type subgroup	立地类型 Site type	土层厚度 Soil thickness （cm）	容重 Bulk density （g·cm^-3）	土壤全碳 Total C in soil （g·kg^-1）	土壤全氮 Total N in soil （g·kg^-1）	土壤全磷 Total P in soil （g·kg^-1）	土壤全钾 Total K in soil （g·kg^-1）
丘陵小区Ⅰ Hill site type district Ⅰ	酸性紫色土组1 Acid purple soil site type group 1	坡下部亚组A Lower slope site type subgroup A	厚土层类型a Thin soil site type a	26.11±1.23	1.54±0.12	10.23±1.23	0.65±0.05	677.13±24.32	24.15±2.13
		坡下部亚组A Lower slope site type subgroup A	中土层类型b Medium soil site type b	34.01±1.33	1.36±0.02	14.65±1.14	0.89±0.02	511.76±27.76	18.40±0.96
		坡中上部亚组B Middle and upper slope site type subgroup B	厚土层类型c Thin soil site type c	25.52±1.29	1.52±0.02	9.57±0.42	0.61±0.02	722.34±54.22	25.06±2.37
		坡中上部亚组B Middle and upper slope site type subgroup B	中土层类型d Medium soil site type d	33.61±1.82	1.40±0.08	14.30±1.89	0.95±0.06	519.93±37.96	19.41±0.96
		坡顶台地亚组C Top slope site type subgroup C	厚土层类型e Thin soil site type e	20.12±0.82	1.57±0.05	8.95±0.43	0.57±0.03	791.13±22.02	27.21±1.31
		坡顶台地亚组C Top slope site type subgroup C	中土层类型f Medium soil site type f	32.51±0.71	1.48±0.04	15.54±1.95	0.90±0.01	527.77±14.18	20.91±1.15
	石灰性紫色土组2 Calcareous purple soil site type group 2	坡下部亚组D Lower slope site type subgroup D	厚土层类型g Thin soil site type g	27.03±1.83	1.49±0.03	10.40±0.89	0.63±0.02	693.68±59.05	24.41±2.59
		坡下部亚组D Lower slope site type subgroup D	中土层类型h Medium soil site type h	35.12±2.14	1.34±0.04	15.94±0.81	0.91±0.04	484.92±31.27	19.41±0.98
		坡中上部亚组E Middle and upper slope site type subgroup E	厚土层类型i Thin soil site type i	16.42±2.12	1.58±0.04	7.74±0.73	0.64±0.01	671.35±39.72	28.85±1.65
		坡顶台地亚组F Top slope site type subgroup F	厚土层类型j Thin soil site type j	21.67±2.52	1.59±0.01	9.32±0.92	0.58±0.03	746.20±23.24	27.81±1.34
山地小区Ⅱ Mountainous site type district Ⅱ	酸性紫色土组3 Acid purple soil site type group 3	阳坡亚组G Sunny slope site type subgroup G	沟槽类型k Groove site type k	59.12±1.31	1.28±0.06	19.50±0.82	1.02±0.03	416.15±5.57	16.14±1.52
			坡地类型l Slope site type l	30.14±1.46	1.47±0.06	11.33±0.99	0.73±0.11	602.81±44.55	21.13±1.35
			脊梁类型m Ridge site type m	23.61±1.14	1.54±0.04	9.61±0.38	0.60±0.02	757.95±10.69	28.40±2.10
		阴坡亚组H Shady slope site type subgroup H	沟槽类型n Groove site type n	33.20±1.32	1.39±0.04	14.72±0.99	0.90±0.03	519.57±15.05	19.62±1.87
		阴坡亚组H Shady slope site type subgroup H	坡地类型o Slope site type o	27.33±3.50	1.45±0.03	10.40±1.33	0.68±0.08	704.44±46.6	25.82±2.77
	石灰性紫色土组4 Calcareous purple soil site type group 4		沟槽类型p Groove site type p	33.33±2.52	1.39±0.06	13.69±2.28	0.91±0.08	519.39±53.87	18.20±1.35
	石灰性紫色土组4 Calcareous purple soil site type group 4		坡地类型q Slope site type q	18.33±0.58	1.57±0.03	9.02±1.17	0.61±0.06	740.53±38.86	27.50±1.25

Table 2

Table 3

Fig.2

Table 4

Table 5

The leaf C，N，P contents and the stoichiometry of C. funebris plantations in different site types

立地类型 Site type	龄组 Age group	C （g·kg^-1）	N （g·kg^-1）	P （g·kg^-1）	C∶N	C∶P	N∶P
a	幼龄林Young stand	559.61±23.12	9.33±1.21	0.91±0.09	59.96±5.34	611.64±32.45	10.20±0.98
b	幼龄林Young stand	561.01±15.32	9.31±0.93	0.91±0.11	60.29±5.24	616.53±45.33	10.23±0.56
	中龄林Half-mature stand	566.05±26.05	9.28±1.08	0.91±0.01	60.99±6.99	620.06±20.26	10.17±1.17
	近熟林Near mature stand	571.52±20.31	9.29±0.98	0.92±0.02	61.53±4.09	624.47±43.43	10.15±0.35
c	中龄林Half-mature stand	555.76±31.86	9.35±0.94	0.91±0.12	59.41±5.32	608.44±24.42	10.24±0.52
	近熟林Near mature stand	558.08±20.31	9.30±0.21	0.91±0.09	59.98±4.34	614.78±34.23	10.25±0.67
d	幼龄林Young stand	552.16±12.5	9.36±0.86	0.92±0.04	58.97±2.13	602.75±24.92	10.22±0.87
	中龄林Half-mature stand	558.75±19.23	9.17±1.01	0.91±0.05	60.94±3.40	614.66±23.45	10.09±0.56
	近熟林Near mature stand	559.44±22.09	9.10±1.00	0.89±0.11	61.49±2.44	629.61±45.34	10.24±0.56
e	幼龄林Young stand	525.10±19.34	9.67±0.99	1.06±0.09	54.29±5.43	494.58±43.33	9.11±0.43
	中龄林Half-mature stand	528.62±20.15	9.56±0.12	1.03±0.05	55.29±7.02	513.93±44.26	9.29±0.91
	近熟林Near mature stand	529.26±19.94	9.47±0.23	0.99±0.01	55.87±5.09	534.36±12.44	9.56±1.12
f	幼龄林Young stand	532.00±30.16	9.43±0.45	0.94±0.05	56.68±5.26	563.39±34.45	10.06±0.75
g	幼龄林Young stand	531.56±21.32	9.43±0.66	0.96±0.08	56.35±5.32	556.56±12.34	9.88±0.66
	中龄林Half-mature stand	538.72±12.34	9.34±0.71	0.93±0.05	57.66±4.07	578.60±34.62	10.04±0.56
	近熟林Near mature stand	545.66±19.22	9.37±0.23	0.92±0.09	58.25±3.44	595.09±32.22	10.22±0.33
h	幼龄林Young stand	537.91±37.91	9.41±0.42	0.93±0.03	57.14±4.09	576.81±12.44	10.09±0.13
	中龄林Half-mature stand	546.52±10.27	9.39±0.22	0.92±0.05	58.22±5.13	593.92±15.32	10.20±0.65
	近熟林Near mature stand	548.87±11.29	9.37±0.93	0.92±0.09	58.56±4.35	597.45±15.36	10.20±0.45
i	幼龄林Young stand	522.08±12.08	9.78±1.28	1.08±0.08	53.41±3.41	488.35±22.45	9.12±9.12
	中龄林Half-mature stand	521.79±21.09	9.74±0.71	1.10±0.16	53.56±3.56	476.00±12.44	8.89±0.67
	近熟林Near mature stand	525.71±12.32	9.67±0.99	1.06±0.09	54.35±5.34	494.66±56.33	9.10±0.45
j	幼龄林Young stand	527.02±32.11	9.70±0.23	1.05±0.10	54.35±5.54	501.96±23.45	9.24±0.85
	中龄林Half-mature stand	529.45±20.13	9.59±0.84	1.01±0.10	55.21±5.64	525.99±22.33	9.53±1.09
	近熟林Near mature stand	530.06±21.22	9.49±0.23	0.98±0.10	55.84±3.45	543.44±12.34	9.73±1.11
k	幼龄林Young stand	581.89±12.43	9.28±0.71	0.92±0.05	62.72±6.11	635.63±32.35	10.13±0.64
	中龄林Half-mature stand	586.29±10.29	9.26±1.20	0.91±0.11	63.30±5.34	641.83±31.23	10.14±0.14
	近熟林Near mature stand	592.06±32.32	9.26±0.23	0.90±0.06	63.95±6.09	656.17±15.43	10.26±0.65
l	幼龄林Young stand	560.52±19.28	9.27±0.14	0.91±0.05	60.54±5.37	616.09±32.47	10.18±0.45
	中龄林Half-mature stand	560.35±15.89	9.32±0.81	0.92±0.06	60.10±5.25	611.50±21.38	10.17±0.22
	近熟林Near mature stand	562.40±15.67	9.27±0.92	0.91±0.05	60.68±4.32	617.54±15.96	10.18±0.42
m	幼龄林Young stand	530.63±13.46	9.40±0.51	0.96±0.09	56.43±4.01	553.68±10.28	9.81±0.31
	中龄林Half-mature stand	543.16±12.37	9.42±0.33	0.92±0.11	57.67±5.08	589.09±14.22	10.21±0.46
n	幼龄林Young stand	566.43±22.92	9.28±0.52	0.91±0.09	61.07±4.01	620.58±17.06	10.16±0.34
	中龄林Half-mature stand	569.73±23.25	9.29±0.61	0.91±0.05	61.35±4.07	624.36±12.28	10.18±0.42
o	幼龄林Young stand	529.84±21.71	9.60±0.52	1.02±0.04	55.19±3.59	521.80±25.11	9.45±0.35
	中龄林Half-mature stand	528.31±12.22	9.32±0.65	0.98±0.12	56.71±3.31	537.64±10.32	9.48±0.13
	近熟林Near mature stand	531.52±33.21	9.33±0.22	0.95±0.10	56.97±4.23	557.17±23.33	9.78±0.45
p	幼龄林Young stand	565.06±5.42	9.26±0.32	0.92±0.05	61.03±3.45	611.56±14.54	10.02±0.98
	中龄林Half-mature stand	573.19±21.34	9.26±0.53	0.92±0.09	61.92±4.23	622.12±12.43	10.05±0.77
	近熟林Near mature stand	574.59±17.21	9.23±0.82	0.92±0.12	62.23±4.27	624.09±12.71	10.03±0.72
q	幼龄林Young stand	553.64±18.75	9.45±0.72	0.93±0.01	58.62±3.26	593.29±27.53	10.12±0.39
	中龄林Half-mature stand	547.51±24.06	9.43±0.82	0.93±0.05	58.06±4.14	591.23±11.99	10.18±0.71
	近熟林Near mature stand	551.58±15.49	9.34±0.92	0.92±0.09	59.04±5.28	602.80±14.03	10.21±0.62

Table 5

Table 6

Fig.3

样地 Plot	地点 Location	立地区域 Site area	地形信息Terrain information						土壤理化特性Soil physical and chemical properties								林分基本特征Basic forestry features
样地 Plot	地点 Location	立地区域 Site area	地貌 Landform	海拔 Altitude （m）	坡位 Slope position	坡向 Slope aspect	坡度 Slope（°）	小地形 Microtop- ography	土壤类型 Soil type	土层厚度 Soil thickness （cm）	容重 Bulk density （g·cm^-3）	pH值 pH value	全C C tot （g·kg^-1）	全N N tot （g·kg^-1）	全P P tot （mg·kg^-1）	全K K tot （g·kg^-1）	林龄 Stand age （a）	龄组 Age group	密度 Density （株·hm^-2）	郁闭度 Canopy closure	平均胸径 Mean DBH（cm）	平均树高 Mean height（m）
1	大英1 Daying 1	MB	H	358.35	LS				PS	34	1.39	5.50	14.92	0.87	502.53	19.21	26	HMS	1650	0.73	16.80	15.74
2	大英2 Daying 2	MB	H	388.91	LS				PS	34	1.36	5.37	14.74	0.88	507.96	18.06	29	HMS	1650	0.75	14.48	13.20
3	大英3 Daying 3	MB	H	475.31	LS				PS	37	1.32	7.71	16.17	0.92	448.62	18.95	31	HMS	1770	0.70	14.60	12.78
4	大英4 Daying 4	MB	H	376.30	LS				PS	28	1.48	7.80	10.95	0.64	659.58	23.15	29	HMS	1770	0.63	13.40	11.75
5	大英5 Daying 5	MB	H	454.59	MUS				PS	32	1.47	5.50	12.95	0.87	564.09	18.16	41	NMS	1370	0.74	18.62	16.28
6	大英6 Daying 6	MB	H	488.97	TS				PS	19	1.63	5.50	8.49	0.55	773.97	26.08	33	HMS	1650	0.61	15.82	13.87
7	旌阳1 Jingyang 1	MB	H	454.34	TS				PS	33	1.45	5.46	14.16	0.89	537.79	21.01	11	YS	1650	0.50	8.74	7.07
8	旌阳2 Jingyang 2	MB	H	323.20	LS				PS	37	1.34	7.80	15.94	0.90	445.42	18.53	22	HMS	1770	0.71	12.48	10.19
9	旌阳3 Jingyang 3	MB	H	477.43	LS				PS	26	1.45	7.82	9.50	0.64	674.51	24.42	39	HMS	1770	0.73	15.49	13.99
10	旌阳4 Jingyang 4	MB	H	389.72	MUS				PS	33	1.44	5.48	13.71	0.98	509.20	20.86	11	YS	1370	0.45	9.83	8.06
11	旌阳5 Jingyang 5	MB	H	464.56	TS				PS	21	1.51	5.32	9.51	0.61	770.32	28.41	10	YS	1650	0.47	7.69	6.42
12	南部1 Nanbu 1	MB	H	359.02	LS				PS	33	1.42	7.90	14.20	0.85	523.70	21.46	10	YS	1770	0.43	7.78	6.84
13	南部2 Nanbu 2	MB	H	494.45	LS				PS	37	1.32	7.87	16.29	0.97	454.52	18.68	38	HMS	1770	0.63	14.35	13.89
14	南部3 Nanbu 3	MB	H	487.62	LS				PS	31	1.37	7.84	16.90	0.90	513.88	18.63	42	NMS	1770	0.76	15.62	14.88
15	南部4 Nanbu 4	MB	H	478.93	LS				PS	25	1.53	7.72	9.78	0.60	781.60	28.02	18	YS	1770	0.45	13.04	11.18
16	南部5 Nanbu 5	MB	H	458.67	MUS				PS	27	1.52	5.39	9.50	0.63	668.20	23.00	47	NMS	1370	0.76	22.24	18.94
17	威远1 Weiyuan 1	SB	H	380.16	LS				PS	35	1.31	7.79	16.47	0.86	507.30	19.86	13	YS	1770	0.41	7.37	6.98
18	威远2 Weiyuan 2	SB	H	491.79	LS				PS	35	1.31	7.78	15.51	0.91	486.97	19.26	19	YS	1770	0.54	12.35	11.29
19	威远3 Weiyuan 3	SB	H	430.13	LS				PS	35	1.36	7.76	16.04	0.93	498.93	19.87	20	YS	1770	0.53	12.60	11.20
20	威远4 Weiyuan 4	SB	H	401.60	LS				PS	29	1.49	7.72	11.35	0.63	659.01	22.06	44	NMS	1770	0.71	16.16	15.00
21	苍溪1 Cangxi 1	NB	M	875.21		SW34	20.32	G	PS	58	1.28	5.39	19.77	1.04	415.51	15.51	23	HMS	1650	0.66	20.51	18.12
22	苍溪2 Cangxi 2	NB	M	859.66		SW32	17.41	G	PS	59	1.17	5.44	19.57	1.01	412.27	16.73	47	NMS	1860	0.78	33.33	25.48
23	苍溪3 Cangxi 3	NB	M	1213.59		SW32	20.18	G	PS	59	1.26	5.43	20.00	1.01	412.99	16.57	13	YS	1650	0.57	14.33	11.75
24	苍溪4 Cangxi 4	NB	M	1376.28		NW55	16.07	S	PS	29	1.53	5.59	11.03	0.65	635.46	22.47	14	YS	1860	0.49	13.42	11.09
25	苍溪5 Cangxi 5	NB	M	1295.24		NW62	20.07	S	PS	31	1.45	5.37	10.92	0.79	584.87	19.34	33	HMS	1860	0.75	17.29	15.02
26	苍溪6 Cangxi 6	NB	M	1367.82		NW59	17.02	S	PS	29	1.47	5.50	10.57	0.63	629.86	22.00	44	NMS	1860	0.81	18.64	15.79
27	苍溪7 Cangxi 7	NB	M	833.44		SW12	20.16	G	PS	36	1.35	7.53	15.76	1.01	466.40	17.85	41	NMS	1650	0.84	26.39	21.09
28	苍溪8 Cangxi 8	NB	M	1316.02		SW15	20.60	S	PS	18	1.56	7.76	8.94	0.64	711.58	28.05	31	HMS	1650	0.60	14.20	12.92
29	苍溪9 Cangxi 9	NB	M	1243.44		SW22	17.26	S	PS	19	1.55	7.68	9.22	0.55	784.69	26.07	42	NMS	1650	0.77	16.89	15.09
30	苍溪10 Cangxi 10	NB	M	1050.39		NW20	18.09	G	PS	33	1.42	5.49	14.49	0.89	517.96	21.05	26	HMS	1860	0.78	17.53	15.99
31	苍溪11 Cangxi 11	NB	M	1006.75		NE30	18.89	G	PS	35	1.31	5.41	16.42	0.88	498.08	19.08	29	HMS	1860	0.72	14.25	13.24
32	苍溪12 Cangxi 12	NB	M	1488.22		NW22	17.10	S	PS	31	1.46	5.42	11.49	0.79	681.50	25.35	19	YS	1770	0.55	12.46	11.20
33	苍溪13 Cangxi 13	NB	M	1204.07		NE22	19.53	S	PS	25	1.38	5.41	10.29	0.60	765.64	28.13	46	NMS	1770	0.74	16.32	17.01
34	苍溪14 Cangxi 14	NB	M	1197.84		NW23	16.25	S	PS	27	1.46	5.31	9.63	0.63	684.78	23.21	20	YS	1770	0.52	12.38	10.98
35	苍溪15 Cangxi 15	NB	H	483.44	LS				PS	32	1.36	5.37	12.57	0.92	561.51	18.77	17	YS	1650	0.50	14.14	11.24
36	苍溪16 Cangxi 16	NB	H	493.45	MUS				PS	32	1.44	5.37	12.26	0.91	553.97	19.42	36	HMS	1370	0.69	17.49	14.37
37	苍溪17 Cangxi 17	NB	H	488.09	MUS				PS	36	1.30	5.34	16.43	0.96	474.69	19.41	19	YS	1370	0.66	12.84	11.47
38	苍溪18 Cangxi 18	NB	H	487.02	MUS				PS	25	1.54	5.41	9.02	0.61	775.04	24.36	27	HMS	1370	0.78	14.39	12.75
39	剑阁1 Jiange 1	NB	M	998.29		SW36	19.21	G	PS	61	1.27	5.40	19.89	1.00	408.75	16.72	13	YS	1650	0.55	14.00	12.80
40	剑阁2 Jiange 2	NB	M	946.71		SW43	19.58	G	PS	58	1.33	5.41	19.02	1.04	424.15	15.64	31	HMS	1860	0.73	22.50	20.41
41	剑阁3 Jiange 3	NB	M	954.84		SW27	18.05	G	PS	58	1.36	5.51	18.44	1.06	424.19	16.38	13	YS	1650	0.58	14.58	11.63
42	剑阁4 Jiange 4	NB	M	1354.85		NW52	20.29	S	PS	32	1.39	5.51	12.64	0.88	551.33	19.56	11	YS	1860	0.44	11.77	9.09
43	剑阁5 Jiange 5	NB	M	1262.93		NW78	17.69	S	PS	29	1.55	5.37	10.81	0.64	639.57	22.22	31	HMS	1860	0.70	17.56	14.02
44	剑阁6 Jiange 6	NB	M	1028.08		NW66	18.59	S	PS	29	1.47	5.57	10.50	0.65	641.38	22.02	31	HMS	1860	0.77	15.77	14.21
45	剑阁7 Jiange 7	NB	M	1410.04		SW14	18.64	R	PS	23	1.54	5.46	9.25	0.59	751.43	28.42	11	YS	1860	0.42	8.58	7.12
46	剑阁8 Jiange 8	NB	M	1432.66		NW71	18.28	R	PS	24	1.54	5.37	9.90	0.58	763.40	28.43	25	HMS	1860	0.63	15.33	13.86
47	剑阁9 Jiange 9	NB	M	1408.87		NW46	16.80	R	PS	25	1.60	5.46	9.14	0.61	773.24	28.42	28	HMS	1860	0.73	13.77	12.53
48	剑阁10 Jiange 10	NB	M	1431.18		SW21	19.07	R	PS	22	1.50	5.47	9.77	0.63	755.85	28.50	14	YS	1860	0.45	10.28	9.86
49	剑阁11 Jiange 11	NB	M	865.33		SW46	19.23	G	PS	33	1.36	7.62	14.06	0.87	517.68	18.55	21	HMS	1650	0.66	16.53	15.01
50	剑阁12 Jiange 12	NB	M	750.02		SW55	19.74	G	PS	31	1.45	7.51	11.24	0.86	574.10	18.21	19	YS	1650	0.67	15.32	12.01
51	剑阁13 Jiange 13	NB	M	1200.53		SW20	16.22	S	PS	18	1.61	7.71	8.90	0.65	725.32	28.37	19	YS	1650	0.59	12.39	11.33
52	剑阁14 Jiange 14	NB	M	921.27		NE36	19.83	G	PS	32	1.40	5.42	14.02	0.89	537.03	19.34	11	YS	1860	0.44	12.68	9.22
53	剑阁15 Jiange 15	NB	M	1112.59		NW22	17.94	G	PS	34	1.40	5.34	14.68	0.90	514.63	18.84	22	HMS	1860	0.71	16.50	14.54
54	剑阁16 Jiange 16	NB	M	1071.89		NW25	16.16	G	PS	32	1.40	5.48	14.01	0.95	530.16	19.81	16	YS	1860	0.51	15.92	12.17
55	剑阁17 Jiange 17	NB	M	1407.52		NE15	16.28	S	PS	31	1.48	5.55	11.74	0.78	669.85	27.42	20	YS	1860	0.53	10.64	10.79
56	剑阁18 Jiange 18	NB	M	1357.04		NE22	18.39	S	PS	28	1.45	5.52	11.07	0.65	663.07	22.00	25	HMS	1770	0.62	12.21	10.29
57	剑阁19 Jiange 19	NB	M	1174.09		NE20	19.96	S	PS	22	1.46	5.31	8.20	0.62	761.81	28.81	37	HMS	1770	0.70	12.73	14.75
58	剑阁20 Jiange 20	NB	H	489.23	LS				PS	34	1.35	5.44	15.40	0.90	503.90	18.26	21	HMS	1650	0.67	18.77	14.23
59	剑阁21 Jiange 21	NB	H	498.14	LS				PS	36	1.34	5.55	15.61	0.89	482.91	17.69	43	NMS	1650	0.71	22.54	18.01
60	剑阁22 Jiange 22	NB	H	490.09	LS				PS	26	1.54	5.38	10.23	0.65	677.13	24.15	20	YS	1650	0.55	14.61	12.33
61	梓潼1 Zitong 1	NB	M	844.90		SW35	19.94	G	PS	61	1.27	5.44	20.83	0.97	413.72	16.01	36	HMS	1860	0.71	24.98	21.39
62	梓潼2 Zitong 2	NB	M	861.73		SW33	20.23	G	PS	58	1.29	5.58	18.47	1.01	417.61	15.59	22	HMS	1650	0.72	19.25	17.77
63	梓潼3 Zitong 3	NB	M	1062.06		NW63	19.61	S	PS	32	1.42	5.39	12.85	0.86	537.22	20.30	43	NMS	1860	0.73	20.67	16.13
64	梓潼4 Zitong 4	NB	M	1434.36		SW18	17.73	R	PS	24	1.50	5.44	9.97	0.58	745.83	28.23	24	HMS	1860	0.74	14.59	13.43
65	梓潼5 Zitong 5	NB	H	406.85	MUS				PS	35	1.33	5.51	16.15	1.01	497.72	19.19	16	YS	1370	0.54	11.63	10.82
66	梓潼6 Zitong 6	NB	H	421.07	MUS				PS	24	1.53	5.33	9.78	0.58	762.49	28.48	34	HMS	1370	0.63	16.67	15.19
67	梓潼7 Zitong 7	NB	H	447.60	MUS				PS	26	1.50	5.56	9.99	0.63	683.62	24.38	28	HMS	1370	0.77	14.86	12.59
68	梓潼8 Zitong 8	NB	H	489.24	TS				PS	32	1.51	5.36	16.92	0.90	517.74	20.80	18	YS	1650	0.51	8.80	8.28
69	梓潼9 Zitong 9	NB	H	494.26	TS				PS	20	1.60	5.43	8.81	0.56	808.26	26.07	26	HMS	1650	0.63	13.70	12.10
70	梓潼10 Zitong 10	NB	H	493.78	TS				PS	20	1.54	5.52	9.00	0.55	811.96	28.29	42	NMS	1650	0.71	15.56	13.98

References 34

1	龚固堂，陈俊华，黎燕琼，等.四川盆地四种柏木林分类型的水文效应［J］.生态学报，2011，31（10）：2716-2726.
	Gong G T，Chen J H，Li Y Q，et al.A comparative analysis of the hydrological effects of the four cypress stand types in Sichuan Basi［J］.Acta Ecologica Sinica，2011，31（10）：2716-2726.
2	史胜青，胡永建，刘建锋，等.鞭角华扁叶蜂对自然生境柏木挥发物释放的影响［J］.植物研究，2012，32（2）：248-252.
	Shi S Q，Hu Y J，Liu J F，et al.Influences of Chinolyda flagellicornis on volatile organic compounds of Cupressus funebris in natural conditions［J］.Bulletin of Botanical Research，2012，32（2）：248-252.
3	苏宇，何瑞，尹海锋，等.开窗补植银木对柏木低效林分生态化学计量特征的影响［J］.生态学报，2019，39（2）：590-598.
	Su Y，He R，Yin H F，et al.Effects of Cinnamomum septentrionale in hilly area of central Sichuan basin on ecological stoichiometry characteristics of Cupressus funebris forest［J］.Acta Ecologica Sinica，2019，39（2）：590-598.
4	黎燕琼，龚固堂，郑绍伟，等.低效柏木纯林不同改造措施对水土保持功能的影响［J］.生态学报，2013，33（3）：934-943.
	Li Y Q，Gong G T，Zheng S W，et al.Impact on water and soil conservation of different bandwidths in low-efficiency cypress forest transformation［J］.Acta Ecologica Sinica，2013，33（3）：934-943.
5	孙澜，苏智先，张素兰，等.嘉陵江流域南充金城山森林群落结构特征分析［J］.植物研究，2008，28（3）：364-369.
	Sun L，Su Z X，Zhang S L，et al.Forest community structural features of Jincheng mountain in Nanchong region in Jialing river basin［J］.Bulletin of Botanical Research，2008，28（3）：364-369.
6	程瑞梅，肖文发，李新新，等.三峡库区柏木林研究［J］.林业科学研究，2004，14（3）：382-386.
	Cheng R M，Xiao W F，Li X X，et al.Research of Cupressus funebris forest in the three gorges reservoir area［J］.Forest Research，2004，17（3）：382-386.
7	He J S，Wang L，Flynn D F B，et al.Leaf nitrogen：phosphorus stoichiometry across Chinese grassland biomes［J］.Oecologia，2008，155（2）：301-310.
8	Zhang K，Su Y Z，Yang R.Variation of soil organic carbon，nitrogen，and phosphorus stoichiometry and biogeographic factors across the desert ecosystem of Hexi Corridor，northwestern China［J］.Journal of Soils and Sediments，2019，19（1）：49-57.
9	曾德慧，陈广生.生态化学计量学：复杂生命系统奥秘的探索［J］.植物生态学报，2005，29（6）：1007-1019.
	Zeng D H，Chen G S.Ecological stoichiometry：a science to explore the complexity of living systems［J］.Acta Phytoecologica Sinica，2005，29（6）：1007-1019.
10	张书齐，许全，姚海荣，等.海南岛海岸带木麻黄和厚藤叶片碳、氮、磷含量及其化学计量特征［J］.植物研究，2020，40（2）：224-232.
	Zhang S Q，Xu Q，Yao H R，et al.Carbon，nitrogen and phosphorus contents and their ecological stoichiometry characteristics in leaves of Casuarina equisetifolia and Ipomoea pes-caprae in the coastal zone of Hainan island［J］.Bulletin of Botanical Research，2020，40（2）：224-232.
11	Hillebrand H，Frost P，Liess A.Ecological stoichiometry of indirect grazer effects on periphyton nutrient content［J］.Oecologia，2008，155（3）：619-630.
12	闫帮国，刘刚才，樊博，等.干热河谷植物化学计量特征与生物量之间的关系［J］.植物生态学报，2015，39（8）：807-815.
	Yan B G，Liu G C，Fan B，et al.Relationships between plant stoichiometry and biomass in an arid-hot valley，Southwest China［J］.Chinese Journal of Plant Ecology，2015，39（8）：807-815.
13	Ferris R，Peace A J，Humphrey J W，et al.Relationships between vegetation，site type and stand structure in coniferous plantations in Britain［J］.Forest Ecology and Management，2000，136（1-3）：35-51.
14	陈国平，俎丽红，高张莹，等.八仙山不同立地落叶阔叶林凋落物养分特征及土壤肥力评价研究［J］.植物研究，2016，36（6）：878-885.
	Chen G P，Zu L H，Gao Z Y，et al.The characteristics of forest floor nutrients and soil fertility assessment for deciduous broad-leaved forest with different site conditions［J］.Bulletin of Botanical Research，2016，36（6）：878-885.
15	何方，何柏.油茶栽培分布与立地分类的研究［J］.林业科学，2002，38（5）：64-72.
	He F，He B.Cultural distribution and site classification for Camellia oleifera［J］.Scientia Silvae Sinicae，2002，38（5）：64-72.
16	Colburn R W，Rickman A J，Deleo J A.The effect of site and type of nerve injury on spinal glial activation and neuropathic pain behavior［J］.Experimental Neurology，1999，157（2）：289-304.
17	Wallenius T H，Kuuluvainen T，Vanha-Majamaa I.Fire history in relation to site type and vegetation in Vienansalo wilderness in eastern Fennoscandia，Russia［J］.Canadian Journal of Forest Research，2004，34（7）：1400-1409.
18	Zalewski A.Factors affecting selection of resting site type by pine marten in primeval deciduous forests（Białowieża National Park，Poland）［J］.Acta Theriologica，1997，42（3）：271-288.
19	Noordermeer L，Bollandsås O M，Gobakken T，et al.Direct and indirect site index determination for Norway spruce and Scots pine using bitemporal airborne laser scanner data［J］.Forest Ecology and Management，2018，428：104-114.
20	Tschopp A，Ferrari M A，Crespo E A，et al.Development of a site fidelity index based on population capture-recapture data［J］.PeerJ，2018，6：e4782.
21	盛炜彤，范少辉.杉木人工林的育林干扰对长期立地生产力的影响［J］.林业科学，2003，39（5）：37-43.
	Sheng W T，Fan S H.Impact of cultivation activities on the long-term site productivity of Chinese fir plantations［J］.Scientia Silvae Sinicae，2003，39（5）：37-43.
22	Li K，Shang Y J，He W T，et al.An engineering site suitability index（ESSI） for the evaluation of geological situations based on a multi-factor interaction matrix［J］.Bulletin of Engineering Geology and the Environment，2019，78（1）：569-577.
23	Tandon S N.Site evaluation［J］.Khagol，1997，32（1）：5-8.
24	魏宇昆，梁宗锁，崔浪军，等.黄土高原不同立地条件下沙棘的生产力与水分关系研究［J］.应用生态学报，2004，15（2）：195-200.
	Wei Y K，Liang Z S，Cui L J，et al.Relationships between water and productivity of seabuckthorn（Hippophae） in different habitats of the Loess Plateau，China［J］.Chinese Journal of Applied Ecology，2004，15（2）：195-200.
25	鲍士旦.土壤农化分析：3版［M］.北京：中国农业出版社，2000.
	Bao S D.Soil and agricultural chemistry analysis：3^rd ed［M］.Beijing：China Agricultural Press，2000.
26	Elser J J，Fagan W F，Denno R F，et al.Nutritional constraints in terrestrial and freshwater food webs［J］.Nature，2000，408（6812）：578-580.
27	任书杰，于贵瑞，姜春明，等.中国东部南北样带森林生态系统102个优势种叶片碳氮磷化学计量学统计特征［J］.应用生态学报，2012，23（3）：581-586.
	Ren S J，Yu G R，Jiang C M，et al.Stoichiometric characteristics of leaf carbon，nitrogen，and phosphorus of 102 dominant species in forest ecosystems along the North-South Transect of East China［J］.Chinese Journal of Applied Ecology，2012，23（3）：581-586.
28	任书杰，于贵瑞，陶波，等.中国东部南北样带654种植物叶片氮和磷的化学计量学特征研究［J］.环境科学，2007，28（12）：2665-2673.
	Ren S J，Yu G R，Tao B，et al.Leaf nitrogen and phosphorus stoichiometry across 654 terrestrial plant species in NSTEC［J］.Environmental Science，2007，28（12）：2665-2673.
29	谭海霞，金照光，孙富强，等.滦河口典型盐生植物的生态化学计量特征研究［J］.植物研究，2018，38（6）：956-960.
	Tan H X，Jin Z G，Sun F Q，et al.Stoichiometry characteristics of typical halophytes in Luanhe Estuary wetland［J］.Bulletin of Botanical Research，2018，38（6）：956-960.
30	宋思梦，张丹桔，张健，等.马尾松人工林林窗边缘效应对油樟化学计量特征的影响［J］.植物生态学报，2017，41（10）：1081-1090.
	Song S M，Zhang D J，Zhang J，et al.Edge effects of forest gap in Pinus massoniana plantations on the ecological stoichiometry of Cinnamomum longepaniculatum［J］.Chinese Journal of Plant Ecology，2017，41（10）：1081-1090.
31	Elser J J，Fagan W F，Kerkhoff A J，et al.Biological stoichiometry of plant production：metabolism，scaling and ecological response to global change［J］.New Phytologist，2010，186（3）：593-608.
32	Mcgroddy M E，Daufresne T，Hedin L O.Scaling of C∶N∶P stoichiometry in forests worldwide：implications of terrestrial Redfield-type ratios［J］.Ecology，2004，85（9）：2390-2401.
33	宋思梦，谭波，周扬，等.林窗大小对马尾松人工林更新植物生态化学计量特征的影响［J］.应用与环境生物学报，2016，22（6）：1040-1047.
	Song S M，Tan B，Zhou Y，et al.Effects of forest gap size on ecological stoichiometric characteristics of update plants in Pinus massoniana plantation［J］.Chinese Journal of Applied & Environmental Biology，2016，22（6）：1040-1047.
34	刘旻霞，李俐蓉，车应弟，等.高寒草甸不同演替阶段植物叶片功能性状研究［J］.植物研究，2019，39（5）：760-769.
	Liu M X，Li L R，Che Y D，et al.Functional traits of plant leaves at different succession stages in alpine meadow［J］.Bulletin of Botanical Research，2019，39（5）：760-769.

变量 Variables	丘陵小区Hill site type district						山地小区Mountainous site type district
变量 Variables	STH	BD	STC	STN	STP	STK	Mic	STH	BD	STC	STN	STP	STK
Mic	/						1	-0.744^**	0.674^*	-0.785^**	-0.853^**	0.857^**	0.234
STH	1	-0.855^**	0.905^**	0.571^*	-0.897^**	-0.901^**	-0.744^**	1	-0.800^**	0.812^	0.477^**	-0.871^**	-0.834^**
BD	-0.855^**	1	-0.900^**	-0.161	0.515^*	0.076	0.674^*	-0.800^**	1	-0.471^*	-0.120	0.146	0.274
STC	0.905^**	-0.900^**	1	0.347	-0.840^**	-0.887^**	-0.785^**	0.812^**	-0.471^*	1	0.615^*	-0.634^*	-0.246
STN	0.571^*	-0.161	0.347	1	-0.632^*	-0.579^*	-0.853^**	0.477^*	-0.120	0.615^*	1	-0.964^**	-0.199
STP	-0.897^**	0.515^*	-0.840^**	-0.632^**	1	0.826^**	0.857^**	-0.871^**	0.146	-0.634^*	-0.964^**	1	0.257
STK	-0.901^**	0.076	-0.887^**	-0.579^*	0.826^**	1	0.234	-0.834^**	0.274	-0.246	-0.199	0.257	1

立地类型小区 Site type district	龄组 Age group	C （g·kg^-1）	N （g·kg^-1）	P （g·kg^-1）	C∶N	C∶P	N∶P
丘陵小区Ⅰ Hill site type district Ⅰ	幼龄林Young stand	536.43±15.45Bb	9.52±0.20Aa	0.98±0.08Aa	56.40±2.70Bb	548.79±54.65Bb	9.72±0.53Aa
	中龄林Half-mature stand	546.02±16.61Ab	9.41±0.18Ba	0.96±0.07Aa	58.05±2.75Ab	571.19±53.10ABb	9.82±0.49Aa
	近熟林Near mature stand	546.08±15.87Ab	9.38±0.16Ba	0.95±0.06Aa	58.23±2.58Ab	579.23±46.92Ab	9.93±0.41Aa
	平均值Mean	542.57±16.46b	9.45±0.19a	0.97±0.07a	57.51±2.48b	565.42±52.97b	9.82±0.49a
	最大值Max	571.52	9.92	1.11	61.53	629.61	10.30
	最小值Min	514.59	9.10	0.89	52.18	465.94	8.78
山地小区Ⅱ Mountainous site type district Ⅱ	幼龄林Young stand	553.88±18.86Ba	9.38±0.14Ab	0.94±0.14Aa	59.10±3.77Ba	590.96±40.10Ba	9.99±0.28Ba
	中龄林Half-mature stand	560.08±19.41ABa	9.31±0.16ABa	0.93±0.22ABa	60.14±2.36ABa	605.40±32.75ABa	10.06±0.25Aa
	近熟林Near mature stand	562.74±21.21Aa	9.28±0.24Ba	0.92±0.12Ba	60.64±4.52Aa	612.22±33.41Aa	10.09±0.18Aa
	平均值Mean	558.53±19.69a	9.33±0.20b	0.93±0.17a	59.89±3.59a	601.93±36.20a	10.04±0.24a
	最大值Max	592.06	9.62	1.04	63.95	656.17	10.28
	最小值Min	526.40	9.22	0.90	54.73	507.11	9.22

变量 Variables	立地类型Site type		龄组Age group		立地类型×龄组Site type×age group
变量 Variables	F	P	F	P	F	P
C	73.456	<0.001	20.342	<0.001	18.231	<0.001
N	67.978	<0.001	16.518	<0.001	21.644	<0.001
P	27.279	<0.001	11.279	<0.001	4.123	0.035
C∶N	45.619	<0.001	21.794	<0.001	15.507	<0.001
C∶P	20.305	<0.001	29.965	<0.001	9.617	0.001
N∶P	3.387	0.046	3.729	0.042	1.933	0.138

环境变量 Environmental variables	排序轴 Ordination axis
环境变量 Environmental variables	轴1 Axis1	轴2 Axis2
地貌Landform	-0.3646^**	0.488 3^***
土壤类型Soil type	0.3645^**	-0.333 2^**
坡位Slope position	0.2874^**	-0.241 4^**
坡向Slope aspect	-0.2418^**	0.248 8^**
坡度Slope	-0.0646	0.088 3
海拔Altitude	-0.1250	-0.010 9
小地形Microtopography	-0.1880^*	-0.199 5^*
土层厚度Soil thickness	-0.6913^***	0.368 1^**
pH	0.3806^**	-0.241 0^**
容重Bulk density	0.3536^**	-0.290 2^**
土壤全碳Total C in soil	-0.6738^***	0.248 6^**
土壤全氮Total N in soil	-0.6407^***	0.333 6^**
土壤全磷Total P in soil	0.6307^***	-0.351 9^**
土壤全钾Total K in soil	0.7853^***	-0.286 4^**
龄组Age group	-0.2121^*	0.265 1^**

[1]	Zhuanzhuan JIANG, Li GONG, Yaling SONG. The Chloroplast Division Protein PARC6 Affected the Growth of Cotyledon and Leaf in Arabidopsis thaliana [J]. Bulletin of Botanical Research, 2023, 43(5): 700-710.
[2]	Qin TIAN, Chengyan SHAO, Hanning DUAN, Chenxuan YANG, Lu LI. Morph-anatomy of Leaf and Taxonomic Insights of Eight Viola species from Yunnan,China [J]. Bulletin of Botanical Research, 2023, 43(3): 447-460.
[3]	Qingsong WU, Yinghui LIU, Shuo LI, Panpan LI, Youmin ZHANG. Anatomical Structure and Ecological Adaptability of Stems and Leaves of Rhamnus ussuriensis [J]. Bulletin of Botanical Research, 2023, 43(3): 461-469.
[4]	Tingting LI, Liu YANG, Xiaoxia LI, Yisong WANG, Xiuwei WANG. Different Nitrogen Forms on the Photosynthetic Characteristics and Growth of Fraxinus mandshurica and Quercus mongolica [J]. Bulletin of Botanical Research, 2023, 43(2): 207-217.
[5]	Yang LIU, Liying XU, Tongchao WEI, Lanyi SHEN, Dounan LIU, Yue LIU. Response of Leaf Functional Traits and their relationships to Seasonal Changes in Four Acer Species [J]. Bulletin of Botanical Research, 2023, 43(2): 242-250.
[6]	Jun SUN, Guisheng LI. Sequencing and Analysis of miRNAs in Vegetative and Reproductive Growths of Ceratopteris pteridoides [J]. Bulletin of Botanical Research, 2022, 42(6): 1014-1022.
[7]	Mengqiao GUO, Xuanyu CHEN, Senrong HONG, Jiao LI, Jie FAN, Xinyu CHENG. The Correlation Between Leaf Phenotype Diversity and Total Flavonoids Content of Overground Part of Tetrastigma hemsleyanum Diels & Gilg [J]. Bulletin of Botanical Research, 2022, 42(5): 876-885.
[8]	Bin WEI, Yi LI, Shiping SU. The Effect of Exogenous Proline on the Stomata of Nitraria tangutorum Leaves under Natural Drought [J]. Bulletin of Botanical Research, 2022, 42(3): 492-501.
[9]	Kailin Zhu, Jiabao Li, Xin Chen. Leaf Anatomical Characteristics and Environmental Adaptability of Seven Sorbus Species at Longcanggou National Forest Park [J]. Bulletin of Botanical Research, 2022, 42(2): 174-183.
[10]	Fei Wang, Shujiang Guo, Baoli Fan, Fugui Han, Fanglin Wang, Weixing Zhang, Yunian Zhang. Plant Leaf Traits in Minqin Oasis-desert Transition Zone [J]. Bulletin of Botanical Research, 2022, 42(1): 71-80.
[11]	Li-Qiong ZHU, Dong-Mei QIN, Li-Jun ZHAO, Bin-Sheng DENG, Sheng-Yuan LIU, Chang-Jie JIANG. Leaf Epidermal Micromorphological Features and Their Systematic Significance of Six Wild Speciesof Camellia chrysantha [J]. Bulletin of Botanical Research, 2021, 41(6): 841-850.
[12]	Jie ZHANG, Rong-Rong LI, Jing-Xiang MENG, Yong ZHANG, Chong-Lu ZHONG. Phenotypic Variation and Genetic Diversity of Leaves Traits of Tabebuia and Handroanthus(Bignoniaceace) in China [J]. Bulletin of Botanical Research, 2021, 41(6): 851-861.
[13]	Feng HE, Hong-Yan DU, Pan-Feng LIU, Lu WANG, Jun QING, Lan-Ying DU. Effects of Drought Stress on Leaf Structure of Eucommia ulmoides [J]. Bulletin of Botanical Research, 2021, 41(6): 947-956.
[14]	Xiu-Yun YUAN, Shen-Ping XU, Yi-Ran ZHOU, Xi-Meng WNG, Bo CUI. Shading Effect on Morphology and Leaf Structure of Bletilla striata [J]. Bulletin of Botanical Research, 2021, 41(6): 974-981.
[15]	SHANG Kan-Kan, ZHANG Xi-Jin, SONG Kun. Variation of Stem-leaf Size Relationship of Woody Plants among Different LifeForms in Shanghai Chenshan Botanical Garden [J]. Bulletin of Botanical Research, 2020, 40(5): 641-647.