Ecological Stoichiometric Characteristics of C, N and P and Their Relationship with Soil Factors from Different Organs of the Halophytic Chenopodiaceae Plants in Hulunbuir

doi:10.7525/j.issn.1673-5102.2022.05.022

Abstract

Abstract:

The lack of available nutrients is one of the main factors limiting the biomass of saline plants， the largest group in the saline environment is Chenopodiaceae plants， and the overall nutritional strategy of Chenopodiaceae plants is of great significance to the breeding in saline-alkali soil and agricultural development. four typical Chenopodiaceae plants in Hulunbuir were used as materials， including Suaeda glauca， Chenopodium acuminatum， Salsola tragus and Bassia dasyphylla. In order to reveal the C， N， P stoichiometric characteristics of Chenopodiaceae plants and the relationship with soil factors， the ecological stoichiometric characteristics of carbon（C）， nitrogen（N） and phosphorus（P） in different organs were analyzed respectively. The results showed： ①Both the stem N/P and leaf N/P of Chenopodiaceae plants were greater than 16， and the root N/P of Chenopodiaceae plants was less than 14； The content of C and N in each organ had a significant correlation， root C content>stem C content>leaf C content， The N content of each organ showed the order of leaf N content>stem N content>root N content， it showed that the N element had a good transfer efficiency from roots， stems to leaves. ②The content variability of C， N and P in various organs was compared， and P had the largest coefficient of variation. There was a significant positive correlation between leaf P and leaf N， stem P content also had a significant positive correlation with leaf N， root N content， and root P content had a significant negative correlation with leaf N and root N content. It indicated that the N and P elements had a strong coordination relationship in leaves and roots. ③The RDA ranking indicated that Soil P was the main factor affecting plant leaf stoichiometry， soil K was the main factor of stem stoichiometry variation， and soil N was the main factor of root stoichiometry variation. This study found that Chenopodiaceae plants promoted the accumulation the coordination of N， P in leaf， and reduced the impact on soil P and N restrictions， and showed great significance to saline-alkaline soil management.

Key words: saline-alkali land, Chenopodiaceae, ecological stoichiometry, soil factors

CLC Number:

Q948.12

Yuhang SU, Xiaoqian SONG, Jingwen ZHENG, Zhonghua ZHANG, Zhonghua TANG. Ecological Stoichiometric Characteristics of C, N and P and Their Relationship with Soil Factors from Different Organs of the Halophytic Chenopodiaceae Plants in Hulunbuir[J]. Bulletin of Botanical Research, 2022, 42(5): 910-920.

Figures/Tables 9

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器官 Organ	样本量 Number of samples	C		N		P		C/N		C/P		N/P
器官 Organ	样本量 Number of samples	测量值 Value	CV	测量值 Value	CV	测量值 Value	CV	测量值 Value	CV	测量值 Value	CV	测量值 Value	CV
叶Leaf	24	301.81±42.91c	0.14	19.68±1.35a	0.06	1.00±0.38a	0.37	15.39±2.38c	0.15	334.04±103.99b	0.31	21.79±6.11a	0.28
茎Stem	24	337.97±36.98b	0.11	14.54±1.63b	0.11	0.95±0.28a	0.29	23.58±4.02b	0.17	377.61±84.44b	0.22	16.32±4.07b	0.25
根Root	24	421.36±52.05a	0.12	10.57±1.73c	0.16	0.94±0.29a	0.30	41.69±12.23a	0.29	485.88±151.64a	0.31	12.59±5.65c	0.45

器官 Organ		叶Leaf			茎Stem			根Root
器官 Organ		C	N	P	C	N	P	C	N	P
叶Leaf	C	1.000
	N	0.155	1.000
	P	0.195	0.484**	1.000
茎Stem	C	0.956**	0.181	0.250	1.000
	N	0.019	0.303	0.286	-0.067	1.000
	P	0.241	0.566**	0.282	0.272	0.297	1.000
根Root	C	0.656*	-0.176	0.159	0.665*	-0.099	-0.092	1.000
	N	-0.291	0.667**	0.263	-0.181	0.209	0.598**	-0.566**	1.000
	P	0.003	-0.494*	-0.496*	-0.018	-0.489	-0.405*	0.041	-0.427*	1.000
叶Leaf	C/N	0.895**	-0.303	-0.014	0.883**	-0.137	-0.018	0.736**	-0.593*	0.184
	C/P	0.324	-0.304	-0.835**	0.303	-0.255	-0.176	0.066	-0.333	0.458
	N/P	-0.198	-0.193	-0.933**	-0.217	-0.157	-0.224	-0.353	-0.052	0.426
茎Stem	C/N	0.628*	-0.069	-0.065	0.713**	-0.739**	0.003	0.492*	-0.251	0.345
	C/P	0.239	-0.521*	-0.123	0.238	-0.158	-0.824**	0.502*	-0.718**	0.295
	N/P	-0.257	-0.447*	-0.145	-0.326	-0.299	-0803**	0.073	-0.510*	0.112
根Root	C/N	0.481	-0.520**	-0.035	0.408*	-0.052	-0.399	0.818**	-0.915**	0.230
	C/P	0.314	0.576**	0.605**	0.355	0.420	0.584**	0.249	0.354	-0.859^**
	N/P	-0.013	0.724**	0.521**	0.056	0.432	0.724**	-0.255	0.768**	-0.810^**

	器官 Organ	土壤因子 Soil factors
	器官 Organ	pH	Ece	C （g·kg^-1）	N （g·kg^-1）	P （g·kg^-1）	C/N	C/P	N/P	K （g·kg^-1）	Na （g·kg^-1）
C	叶Leaf	0.381	0.182	-0.309	-0.551	0.357	0.534	-0.809**	-0.844**	-0.547	-0.133
	茎Stem	0.420	0.117	-0.296	-0.488	0.359	0.458	-0.798**	-0.823**	-0.485	-0.163
	根Root	0.206	0.666*	-0.384	-0.609*	0.234	0.563	-0.687*	-0.703*	-0.192	0.178
N	叶Leaf	-0.019	0.149	0.116	0.227	0.462	-0.295	-0.243	-0.210	-0.098	0.022
	茎Stem	0.328	0.072	0.552	0.318	0.309	-0.014	0.076	0.082	0.141	0.600*
	根Root	-0.239	-0.035	0.315	0.578*	0.178	-0.684*	-0.190	0.247	0.071	0.024
P	叶Leaf	0.623*	0.250	0.179	0.202	0.977**	-0.185	-0.560	-0.480	-0.023	0.347
	茎Stem	0.232	0.035	0.035	-0.040	0.323	0.097	0.398	0.375	-0.595*	0.053
	根Root	-0.305	-0.146	-0.493	-0.435	-0.529	0.211	0.151	0.110	-0.150	-0.490
C/N	叶Leaf	0.391	0.101	-0.337	-0.621*	0.138	0.643*	-0.660*	-0.707*	-0.454	-0.126
	茎Stem	0.032	-0.010	-0.606*	-0.505	-0.008	0.294	-0.568	0.588*	-0.446	-0.578*
	根Root	0.381	0.284	-0.318	-0.620*	0.056	0.716*	-0.438	-0.477	-0.097	0.142
C/P	叶Leaf	-0.414	-0.256	-0.261	-0.384	-0.727**	0.385	0.173	0.078	-0.243	-0.453
	茎Stem	0.129	0.125	-0.035	-0.176	-0.100	0.357	-0.017	-0.044	0.449	0.127
	根Root	0.449	0.316	0.267	0.188	0.666*	-0.098	-0.515	-0.468	-0.046	0.441
N/P	叶Leaf	-0.680*	-0.348	-0.096	-0.069	-0.911**	0.069	0.622*	0.544	0.047	-0.414
	茎Stem	0.025	0.059	0.332	0.204	-0.170	0.104	0.448	0.434	0.715**	0.423
	根Root	0.241	0.048	0.396	0.482	0.522	-0.450	-0.178	-0.116	0.010	0.294

土壤因子 Soil factors	叶 Leaf			茎 Stem			根 Root
土壤因子 Soil factors	解释率 Explains /%	F	P	解释率 Explains /%	F	P	解释率 Explains /%	F	P
pH	28.7	4.0	0.040	2.6	0.3	0.820	9.2	1.0	0.424
EC	5.9	0.6	0.564	0.8	<0.1	0.934	7.0	0.8	0.450
C	5.8	0.6	0.500	11.5	1.3	0.266	14.9	1.8	0.198
N	13.0	1.5	0.222	9.8	1.1	0.382	25.5	3.4	0.042
P	55.6	12.5	0.002	6.9	0.7	0.504	18.0	2.2	0.146
C/N	12.3	1.4	0.250	6.9	0.7	0.516	24.1	3.2	0.062
C/P	26.0	3.5	0.040	19.2	2.4	0.114	13.9	1.6	0.194
N/P	22.5	2.9	0.064	19.3	2.4	0.126	13.6	1.6	0.254
K	6.1	0.7	0.522	30.3	4.3	0.012	1.1	0.1	0.936
Na	13.9	1.6	0.206	12.2	1.4	0.264	11.3	1.3	0.308

区域/植物种类 Region/plant species		器官 Organ	C （g·kg^-1）	N （g·kg^-1）	P （g·kg^-1）	C/N	C/P	N/P	参考文献 References
藜科植物	本研究 This study	叶Leaf	301.81	19.68	1.00	15.39	334.04	21.79	本研究
		茎Stem	337.97	14.54	0.95	23.58	377.61	16.32
		根Root	421.36	10.57	0.94	41.69	485.88	12.59
	全国平均 Average in China	叶Leaf	436.80	14.14	1.21	30.90	393.50	12.70	［16］
		茎Stem	448.30	3.04	0.31	147.50	1446.10	9.80
		根Root	418.20	4.85	0.47	86.20	889.80	10.30
	全球平均 Global average	叶Leaf	464.00	17.66	1.58	22.50	232.00	13.07	［9-10］
中国湿地植物 wetland plants in China		叶Leaf		16.07	1.85			8.67	［17］
荒漠植物 Desert plants		叶Leaf	451.65	16.98	1.08	29.83	577.68	19.34	［18］
荒漠植物 Desert plants		根Root	443.62	7.44	1.06	59.64	418.91	7.02	［19］
滨海藜科植物 Chenopodiaceae in coastal wetlands		叶Leaf	230.16	14.87	1.52	16.25	159.62	10.02	［6］
滦河口湿地藜科植物 Chenopodiaceae in luanhe estuary wetland		叶Leaf	212.40	9.68	0.86	22.03	249.88	11.33	［7］
新疆藜科植物 Chenopodiaceae in Xinjiang		叶Leaf	336.63	22.51	2.02	17.54	430.08	24.64	［8］
禾本科盐生植物 Gramineae halophytes		叶Leaf	433.39	18.80	0.95	23.93	475.04	20.76	［13］