The Stoichiometric Characteristics of Desert Ephemeral Plants in Different Growth Periods and Its Association with Soil Factors

doi:10.7525/j.issn.1673-5102.2022.01.015

Abstract

Abstract:

To explore the stoichiometric characteristics of desert ephemeral plants， and to better understand the relationship between habitat soil factors and plant survival strategies， 4 widely distributed plant species （Erodium oxyrrhynchum， Nonea caspica， Hyalea pulchella， Lactuca undulata） were collected， and soil physical and chemical properties were measured at different depths （0-5， 5-10， 10-15 cm）， and the dynamic change and coupling relationship between stoichiometric characteristics of 4 plants and soil factors were compared and analyzed through in-situ multi-period sampling in the field. The results showed that： ①The carbon（C）， nitrogen（N）， and phosphorus（P） contents of the 4 ephemeral plants were generally low， and there were differences in stoichiometric characteristics among species， but the changes were roughly similar in different growth periods. The content of N and P gradually decreased from the seedling stage to the fruit setting stage， while the C content tended to be stable for a long time. During the whole growth period， the variation range of P and C∶P were larger， the variation range of C and N∶P were smaller. The differences in the stoichiometric characteristics of the 4 plants in different growth periods were significantly related to the growth period and plant species. ②The content of soil organic carbon（SOC）， total nitrogen（TN） and total phosphorus （TP） in the 0-5 cm soil layer were the highest respectively， and gradually decreased with the depth of the soil layer. With the growth of plants， the content of SOC and TN in the 0-5 cm soil showed an obvious increasing trend， while the content of TP showed a parabolic change trend. During different growth periods of plants， the stability of soil TP content was the strongest， and the variability of SOC and TN was strong respectively. The lower N content and TN∶TP ratio showed that the soil in the area belonged to the type of N deficiency. The differences in the stoichiometric characteristics of the 3 soil layers in different growth periods were significantly affected by the soil layers and growth periods. ③There was no consistent law in the correlation of stoichiometric characteristics between plants and soils at each level. Plant stoichiometric indicators were only strongly correlated with SOC and SOC∶TP in the 0-10 cm soil， and most of the stoichiometric characteristics did not show correlation， indicating that the stoichiometric characteristics of plants were not directly determined by the characteristics of soil nutrient content. These results indicated that the stoichiometric characteristics of plants were not directly determined by soil nutrient characteristics， and the obvious interspecific differences indicated the importance of plant genetic characteristics in the coupling relationship of soil-plant stoichiometric characteristics.

Key words: eco-stoichiometry, ephemeral plants, desert soil, correlation, gurbantunggut desert

CLC Number:

S154.1

Mingming Wang, Weiwei Zhuang. The Stoichiometric Characteristics of Desert Ephemeral Plants in Different Growth Periods and Its Association with Soil Factors[J]. Bulletin of Botanical Research, 2022, 42(1): 138-150.

Figures/Tables 8

Fig.1

Fig.2

Table 1

Table 2

Fig.3

Table 3

Table 4

Table 5

Correlation analysis of C，N，P and stoichiometric ratio between different plants and soil layers

物种 Species	土层深度 Soil depth /cm	指标 Index	SOC	TN	TP	SOC∶TN	SOC∶TP	TN∶TP
飘带果 L. undulata	0~5	C	-0.442	-0.285	0.619^*	-0.225	-0.601^*	-0.417
		N	-0.670^*	-0.453	-0.391	-0.318	-0.584	-0.291
		P	-0.783^**	-0.600^*	-0.101	-0.296	-0.732^**	-0.492
		C∶N	0.662^*	0.490	0.356	0.264	0.549	0.331
		C∶P	0.807^**	0.583^*	0.064	0.336	0.766^**	0.486
		N∶P	0.741^**	0.540	-0.334	0.306	0.806^**	0.552
	5~10	C	-0.247	-0.085	-0.151	0.061	-0.151	-0.053
		N	-0.791^**	0.326	-0.024	-0.415	-0.711^**	0.304
		P	-0.722^**	0.006	0.021	-0.120	-0.664^*	-0.010
		C∶N	0.765^**	-0.230	-0.080	0.337	0.727^**	-0.191
		C∶P	0.716^**	0.041	-0.145	0.093	0.699^*	0.077
		N∶P	0.417	0.394	-0.136	-0.275	0.419	0.407
	10~15	C	-0.126	-0.199	-0.028	0.090	-0.144	-0.168
		N	-0.119	-0.058	-0.193	0.002	-0.078	-0.011
		P	0.091	-0.414	-0.080	0.319	0.107	-0.375
		C∶N	-0.006	0.105	0.159	-0.090	-0.042	0.061
		C∶P	-0.140	0.441	0.021	-0.353	-0.143	0.394
		N∶P	-0.295	0.772^**	-0.154	-0.618^*	-0.257	0.731^**
琉苞菊 H. pulchella	0~5	C	-0.742^**	-0.605^**	-0.101	-0.268	-0.695^*	-0.508
		N	0.740^**	0.544	0.184	0.316	0.675^*	0.430
		P	-0.658^**	-0.346	-0.325	-0.410	-0.558	-0.217
		C∶N	0.064	-0.224	0.271	0.285	-0.020	-0.276
		C∶P	0.741^**	0.362	0.335	0.480	0.633^*	0.224
		N∶P	0.783^**	0.615^*	0.032	0.311	0.753^*	0.534
	5~10	C	-0.063	0.166	-0.017	-0.192	-0.066	0.154
		N	-0.786^**	0.351	0.017	-0.454	-0.711^**	0.313
		P	-0.833^**	0.253	0.059	-0.362	-0.762^**	0.231
		C∶N	0.793^**	-0.246	-0.041	-0.350	0.752^**	-0.209
		C∶P	0.811^**	-0.103	-0.124	-0.230	0.757^**	-0.076
		N∶P	0.347	0.098	-0.106	-0.035	0.333	0.094
	10~15	C	-0.121	0.095	-0.562	-0.082	0.012	0.200
		N	-0.119	0.077	-0.145	-0.079	-0.093	0.109
		P	-0.184	-0.136	-0.289	0.020	-0.125	-0.071
		C∶N	0.001	0.052	-0.035	-0.049	0.016	0.044
		C∶P	0.087	0.285	0.156	-0.153	0.057	0.233
		N∶P	0.114	0.356	0.283	-0.178	0.050	0.284
假狼紫草 N. caspica	0~5	C	-0.740^**	-0.644^*	-0.212	-0.220	-0.665^*	-0.510
		N	0.740^**	0.544	0.184	0.316	0.675^*	0.430
		P	-0.746^**	-0.629^*	-0.082	-0.232	-0.704^*	-0.532
		C∶N	-0.088	0.141	-0.110	-0.232	-0.046	0.165
		C∶P	0.713^**	0.700^*	0.020	0.131	0.689^*	0.615^*
		N∶P	0.691^*	0.758^**	0.037	0.052	0.664^*	0.658^*
	5~10	C	-0.153	-0.139	-0.022	0.079	-0.103	-0.130
		N	-0.793^**	0.187	-0.171	-0.257	-0.648^*	0.210
		P	-0.700^*	0.047	0.060	-0.142	-0.656^*	0.029
		C∶N	0.750^**	-0.140	0.109	0.213	0.634^*	-0.153
		C∶P	0.688^*	0.040	-0.140	0.074	0.674^*	0.069
		N∶P	0.469	0.148	-0.284	-0.036	0.534	0.210
	10~15	C	-0.159	0.031	0.495	-0.128	-0.291	-0.053
		N	-0.286	0.064	-0.412	-0.119	-0.210	0.144
		P	-0.020	-0.234	-0.435	0.193	0.081	-0.127
		C∶N	0.187	0.020	0.502	0.016	0.083	-0.081
		C∶P	-0.060	0.334	0.434	-0.292	-0.163	0.219
		N∶P	-0.230	0.463	0.302	-0.438	-0.313	0.364
尖喙牻牛儿苗 E. oxyrrhynchum	0~5	C	-0.718^**	-0.656^*	-0.220	-0.175	-0.638^*	-0.514
		N	0.740^**	0.544	0.184	0.316	0.675^*	0.430
		P	-0.665^*	-0.521	-0.336	-0.235	-0.557	-0.363
		C∶N	0.137	0.347	-0.253	-0.195	0.199	0.371
		C∶P	0.655^*	0.555	0.207	0.187	0.582^*	0.427
		N∶P	0.679^*	0.725^**	0.011	0.070	0.657^*	0.633^*
	5~10	C	0.187	-0.178	0.523	0.126	0.006	-0.268
		N	-0.707^*	0.288	-0.310	-0.307	-0.552	0.323
		P	-0.767^**	0.132	-0.202	-0.195	-0.629^*	0.156
		C∶N	0.636^*	-0.185	0.320	0.202	0.484	-0.226
		C∶P	0.713^**	-0.030	0.135	0.108	0.600^*	-0.048
		N∶P	0.524	0.230	-0.167	-0.097	0.509	0.250
	10~15	C	-0.084	-0.226	-0.260	0.151	-0.030	-1.480
		N	0.120	0.182	0.325	-1.030	0.051	0.101
		P	-0.132	-0.105	-0.249	-0.050	-0.082	-0.041
		C∶N	0.213	0.076	0.279	0.031	0.160	0.012
		C∶P	0.042	0.221	0.234	-0.165	-0.006	0.148
		N∶P	0.032	0.345	0.286	-0.249	-0.029	0.253

Table 5

References 39

1	Isles P D F.The misuse of ratios in ecological stoichiometry［J］.Ecology，2020，101（11）：e03153.
2	Han W X，Fang J Y，Guo D L，et al.Leaf nitrogen and phosphorus stoichiometry across 753 terrestrial plant species in China［J］.New Phytologist，2005，168（2）：377-385.
3	Kaye J P，Binkley D，Rhoades C.Stable soil nitrogen accumulation and flexible organic matter stoichiometry during primary floodplain succession［J］.Biogeochemistry，2003，63（1）：1-22.
4	唐高溶，郑伟，王祥，等.旅游对喀纳斯景区植被和土壤碳、氮、磷化学计量特征的影响［J］.草业科学，2016，33（8）：1476-1485.
	Tang G R，Zheng W，Wang X，et al.Effects of tourism disturbance on the ecological stoichiometry characteristics of C，N and P of the vegetation and soil in Kanas Scenic Area［J］.Pratacultural Science，2016，36（8）：1476-1485.
5	丁俊祥，范连连，李彦，等.古尔班通古特沙漠6种荒漠草本植物的生物量分配与相关生长关系［J］.中国沙漠，2016，36（5）：1323-1330.
	Ding J X，Fan L L，Li Y，et al.Biomass allocation and allometric relationships of six desert herbaceous plants in the Gurbantunggut Desert［J］.Journal of Desert Research，2016，36（5）：1323-1330.
6	郭浩，庄伟伟，李进.古尔班通古特沙漠中4种荒漠草本植物的生物量与化学计量特征［J］.植物研究，2019，39（3）：421-430.
	Guo H，Zhuang W W，Li J.Characteristics of biomass and stoichiometry of four desert herbaceous plants in the Gurbantunggut Desert［J］.Bulletin of Botanical Research，2019，39（3）：421-430.
7	Sterner R W，Elser J J.Ecological stoichiometry：the biology of elements from molecules to the biosphere［M］.Princeton：Princeton University Press，2002：1-20.
8	曾冬萍，蒋利玲，曾从盛，等.生态化学计量学特征及其应用研究进展［J］.生态学报，2013，33（18）：5484-5492.
	Zeng D P，Jing L L，Zeng C S，et al，Reviews on the ecological stoichiometry characteristics and its applications［J］.Acta Ecologica Sinica，2013，33（18）：5484-5492.
9	庄伟伟，张元明.生物结皮对荒漠草本植物群落结构的影响［J］.干旱区研究，2017，34（6）：1338-1344.
	Zhuang W W，Zhang Y M.Effect of soil microbiotic crust on plant community in the Gurbantunggut desert［J］.Arid Zone Research，2017，34（6）：1338-1344.
10	傅思华，胡顺军，李浩，等.古尔班通古特沙漠南缘梭梭（Haloxylon ammodendron）群落优势植物水分来源［J］.中国沙漠，2018，38（5）：1024-1032.
	Fu S H，Hu S J，Li H，et al.Water sources of dominant plants in Haloxylon ammodendron community at the southern edge of Gurbantunggut Desert［J］.Journal of Desert Research，2018，38（5）：1024-1032.
11	钱亦兵，吴兆宁，杨海峰，等.古尔班通古特沙漠南部风沙土粒度分布的空间异质性［J］.干旱区地理，2009，32（5）：655-661.
	Qian Y B，Wu Z N，Yang H F，et al.Spatial heterogeneity for grain size distribution of eolian sand soil in the southern Gurbantunggut Desert［J］.Arid Land Geography，2009，32（5）：655-661.
12	冯雷，刘彤，孙钦明，等.古尔班通古特沙漠南部土壤属性空间分布特征［J］.石河子大学学报：自然科学版，2015，33（3）：287-293.
	Feng L，Liu T，Sun Q M，et al.Spatial distribution features of soil properties in southern Gurbantunggut Desert［J］.Journal of Shihezi University：Natural Science，2015，33（3）：287-293.
13	Lyu S M，Liu X，Venail P，et al.Functional dissimilarity，not phylogenetic relatedness，determines interspecific interactions among plants in the Tibetan alpine meadows［J］.Oikos，2017，126（3）：381-388.
14	钱亦兵，吴兆宁，张立运，等.古尔班通古特沙漠植被与环境的关系［J］.生态学报，2007，27（7）：2802-2811.
	Qian Y B，Wu Z N，Zhang L Y，et al.Vegetation-environment relationships in Gurbantunggut Desert［J］.Acta Ecologica Sinica，2007，27（7）：2802-2811.
15	任珺，陶玲.新疆北部短命植物的特征分析［J］.草业科学，2005，22（5）：19-24.
	Ren J，Tao L.Characterization of ephemeral plants in northern region of Xinjiang［J］.Pratacultural Science，2005，22（5）：19-24.
16	冯德枫，包维楷.土壤碳氮磷化学计量比时空格局及影响因素研究进展［J］.应用与环境生物学报，2017，23（2）：400-408.
	Feng D F，Bao W K.Review of the temporal and spatial patterns of soil C∶N∶P stoichiometry and its driving factors［J］.Chinese Journal of Applied & Environmental Biology，2017，23（2）：400-408.
17	刘建国，刘卫国，朱媛媛，等.古尔班通古特沙漠某些短命植物叶片N、P化学计量特征的季节变化［J］.植物学报，2017，52（6）：756-763.
	Liu J G，Liu W G，Zhu Y Y，et al.Seasonal variation of N and P stoichiometric characteristics in leaves of certain ephemeral plants in the Gurbantunggut Desert［J］.Bulletin of Botany，2017，52（6）：756-763.
18	郑艳明，尧波，吴琴，等.鄱阳湖湿地两种优势植物叶片C、N、P动态特征［J］.生态学报，2013，33（20）：6488-6496.
	Zheng Y M，Yao B，Wu Q，et al.Dynamics of leaf carbon，nitrogen and phosphorus of two dominant species in a Poyang Lake wetland［J］.Acta Ecologica Sinica，2013，33（20）：6488-6496.
19	任璐璐，张炳学，韩凤朋，等.黄土高原不同年限刺槐土壤化学计量特征分析［J］.水土保持学报，2017，31（2）：339-344.
	Ren L L，Zhang B X，Han F P，et al.Ecological stoichiometric characteristics of soils in Robinia pseudoacacia forests of different ages on the loess plateau［J］.Journal of Soil and Water Conservation，2017，31（2）：339-344.
20	姜沛沛，曹扬，陈云明.陕西省森林群落乔灌草叶片和凋落物C、N、P生态化学计量特征［J］.应用生态学报，2016，27（2）：365-372.
	Jiang P P，Cao Y，Chen Y M.C，N，P stoichiometric characteristics of tree，shrub，herb leaves and litter in forest community of Shaanxi Province，China［J］.Chinese Journal of Applied Ecology，2016，27（2）：365-372.
21	牛得草，李茜，江世高，等.阿拉善荒漠区6种主要灌木植物叶片C：N：P化学计量比的季节变化［J］.植物生态学报，2013，37（4）：317-325.
	Niu D C，Li Q，Jiang S G，et al.Seasonal variations of leaf C∶N∶P stoichiometry of six shrubs in desert of China's Alxa Plateau［J］.Chinese Journal of Plant Ecology，2013，37（4）：317-325.
22	聂志刚，吴江琪，马维伟，等.甘南尕海湿地不同退化程度植物碳、氮、磷的化学计量特征及动态变化［J］.草地学报，2018，26（2）：386-392.
	Nie Z G，Wu J Q，Ma W W，et al.Stoichiometric characteristics and dynamics of plant carbon，nitrogen and phosphorus in differently degraded Gannan Hai wetland［J］.Acta Agrestia Sinica，2018，26（2）：386-392.
23	Koerselman W，Meuleman A F M.The vegetation N∶P ratio：a new tool to detect the nature of nutrient limitation［J］.Journal of Applied Ecology，1996，33（6）：1441-1450.
24	牛得草，董晓玉，傅华.长芒草不同季节碳氮磷生态化学计量特征［J］.草业科学，2011，28（6）：915-920.
	Niu D C，Dong X Y，Fu H.Seasonal dynamics of carbon，nitrogen and phosphorus stoichiometry in Stipa bungeana［J］.Science Pratacultural，2011，28（6）：915-920.
25	李玉霖，毛伟，赵学勇，等.北方典型荒漠及荒漠化地区植物叶片氮磷化学计量特征研究［J］.环境科学，2010，31（8）：1716-1725.
	Li Y L，Mao W，Zhao X Y，et al.Leaf nitrogen and phosphorus stoichiometry in typical desert and desertified regions，North China［J］.Chinese Journal Of Environmental Science，2010，31（8）：1716-1725.
26	霍举颂，刘卫国，刘建国，等.影响阜康荒漠—绿洲过渡带荒漠植物数量特征的土壤驱动力分析［J］.生态学报，2017，37（24）：8304-8313.
	Huo J S，Liu W G，Liu J G，et al.Driving forces of desert plant characteristics in a desert oasis transitional zone in FuKang，Xinjiang，China［J］.Acta Ecologica Sinica，2017，37（24）：8304-8313.
27	陶冶，刘耀斌，吴甘霖，等.准噶尔荒漠区域尺度浅层土壤化学计量特征及其空间分布格局［J］.草业学报，2016，25（7）：13-23.
	Tao Y，Liu Y B，Wu G L，et al.Regional-scale ecological stoichiometric characteristics and spatial distribution patterns of key elements in surface soils in the Junggar desert，China［J］.Acta Prataculturae Sinica，2016，25（7）：13-23.
28	Tian H Q，Chen G S，Zhang C，et al.Pattern and variation of C：N：P ratios in China’s soils：a synthesis of observational data［J］.Biogeochemisty，2010，98（1-3）：139-151.
29	肖遥，陶冶，张元明.古尔班通古特沙漠4种荒漠草本植物不同生长期的生物量分配与叶片化学计量特征［J］.植物生态学报，2014，38（9）：929-940.
	Xiao Y，Tao Y，Zhang Y M.Biomass allocation and leaf stoichiometric characteristics in four desert herbaceous plants during different growth periods in the Gurbantunggut Desert，China［J］.Chinese Journal of Plant Ecology，2014，38（9）：929 -940.
30	黄梅，周运超，白云星.喀斯特系统土壤厚度下土壤DOC淋失对氮沉降的响应［J］.森林工程，2019，35（5）：43-49.
	Huang M，Zhou Y C，Bai Y X.Response of soil DOC leaching to nitrogen deposition under soil thickness in Karst SystemFull text replacement［J］.Forest Engineering，2019，35（5）：43-49.
31	汪其同，高明宇，刘梦玲，等.杨树根际土碳氮磷化学计量特征与根序的相关性［J］.应用与环境生物学报，2018，24（1）：119-124.
	Wang Q T，Gao M Y，Liu M L，et al.Correlation between stoichiometry characteristics of carbon，nitrogen，and phosphorus，and the root order in the rhizosphere soils of poplar plantations［J］.Chinese Journal of Applied & Environmental Biology，20018，24（1）：119-124.
32	朱秋莲，邢肖毅，张宏，等.黄土丘陵沟壑区不同植被区土壤生态化学计量特征［J］.生态学报，2013，33（15）：4674-4682.
	Zhu Q L，Xing X Y，Zhang H，et al.Soil ecological stoichiometry under different vegetation area on loess hilly-gully region［J］.Acta Ecologica Sinica，2013，33（15）：4674-4682.
33	Jiao F，Wen Z M，An S S，et al.Successional changes in soil stoichiometry after land abandonment in Loess Plateau，China［J］.Ecological Engineering，2013，58：249-254.
34	曾全超，李鑫，董扬红，等.陕北黄土高原土壤性质及其生态化学计量的纬度变化特征［J］.自然资源学报，2015，30（5）：870-879.
	Zeng Q C，Li X，Dong Y H，et al.Ecological stoichiometry characteristics and physical-chemical properties of soils at different latitudes on the Loess Plateau［J］.Journal of Natural Resources，2015，30（5）：870-879.
35	李从娟，雷加强，徐新文，等.塔克拉玛干沙漠腹地人工植被及土壤C、N、P的化学计量特征［J］.生态学报，2013，33（18）：5760-5767.
	Li C J，Lei J Q，Xu X W，et al.The stoichiometric characteristics of C，N，P for artificial plants and soil in the hinterland of Taklimakan Desert［J］.Acta Ecologica Sinica，2013，33（18）：5760-5767.
36	田耀武，和武宇恒，翟淑涵，等.陶湾流域草本植物土壤及土壤微生物量碳氮磷生态化学计量特征［J］.草地学报，2019，27（6）：1643-1650.
	Tian Y W，He W Y H，Zhai S H，et al.Changes of the relationships between soil and microbes in carbon，nitrogen phosphorus ecological stoichiometry in grassland in Taowan watershed［J］.Acta Agrestia Sinica，2019，27（6）：1643-1650.
37	马可心，张梅，方馨，等.入侵植物曼陀罗对本地植物功能性状和土壤碳、氮、磷化学计量特征的影响［J］.植物研究，2020，40（6）：867-875.
	Ma K X，Zhang M，Fang X，et al.Effects of invasive plant Datura stramonium on the functional traits of native plants and the stoichiometric characteristics of soil carbon，nitrogen and phosphorus［J］.Bulletin of Botanical Research，2020，40（6）：867-875.
38	姚颖，刘建明，刘忠玲，等.不同坡位山杏天然林生长和土壤理化性质比较［J］.森林工程，2019，35（6）：36-41.
	Yao Y，Liu J M，Liu Z L，et al.Comparison on Armeniaca sibirica natural forest growth and soil physicochemical properties in different slope PositionFull text replacement［J］.Forest Engineering，2019，35（6）：36-41.
39	陶冶，张元明.古尔班通古特沙漠4种草本植物叶片与土壤的化学计量特征［J］.应用生态学报，2015，26（3）：659-665.
	Tao Y，Zhang Y M.Leaf and soil stoichiometry of four herbs in the Gurbantunggut Desert，China［J］.Chinese Journal of Applied Ecology，2015，26（3）：659-665.

指标 Index	物种 Species	平均值±标准差 Mean±SD /（mg·g^-1）	极差 Range	最小值 Minimum	最大值 Maximum	变异系数 CV /%
C	飘带果 L. undulata	39.11±0.95a	2.74	37.52	40.26	2.43
	琉苞菊 H. pulchella	37.54±1.56b	4.44	35.26	39.70	4.16
	假狼紫草 N. caspica	36.63±1.28b	5.04	33.48	38.52	3.49
	尖喙牻牛儿苗 E. oxyrrhynchum	36.74±1.67b	5.09	33.56	38.65	4.55
N	飘带果 L. undulata	11.82±2.18b	7.00	8.30	15.30	18.44
	琉苞菊 H. pulchella	14.15±2.56a	7.92	10.35	18.27	18.73
	假狼紫草 N. caspica	12.25±1.77a	5.79	9.57	15.36	14.45
	尖喙牻牛儿苗 E. oxyrrhynchum	13.39±3.03a	8.71	9.65	18.36	22.63
P	飘带果 L. undulata	1.97±0.48a	1.39	1.14	2.53	24.37
	琉苞菊 H. pulchella	1.73±0.38a	1.25	1.08	2.33	21.97
	假狼紫草 N. caspica	1.32±0.34b	1.00	0.83	1.83	25.76
	尖喙牻牛儿苗 E. oxyrrhynchum	1.91±0.53a	1.53	1.12	2.65	27.75
C∶N	飘带果 L. undulata	3.42±0.65a	2.32	2.45	4.77	19.01
	琉苞菊 H. pulchella	2.73±0.49b	1.45	2.15	3.60	17.95
	假狼紫草 N. caspica	3.04±0.40ab	1.58	2.32	3.90	13.16
	尖喙牻牛儿苗 E. oxyrrhynchum	2.89±0.70b	1.89	1.83	3.72	24.22
C∶P	飘带果 L. undulata	21.31±6.46b	19.70	14.85	34.55	30.31
	琉苞菊 H. pulchella	22.73±5.55b	16.29	16.54	32.83	24.42
	假狼紫草 N. caspica	29.64±8.59a	25.27	19.75	45.02	28.98
	尖喙牻牛儿苗 E. oxyrrhynchum	20.96±6.79b	21.32	13.07	34.39	32.40
N∶P	飘带果 L. undulata	6.16±0.84c	7.62	5.26	12.88	13.64
	琉苞菊 H. pulchella	8.32±1.31b	5.15	6.41	11.56	15.75
	假狼紫草 N. caspica	9.62±1.75a	5.55	7.33	12.88	18.19
	尖喙牻牛儿苗 E. oxyrrhynchum	7.18±0.99bc	3.74	6.28	10.02	13.88

化学计量 Stoichiometric	平均值 Mean±SD	物种 Species		生长期 Growth period		物种生长期 SpeciesGrowth period
化学计量 Stoichiometric	平均值 Mean±SD	F	P	F	P	F	P
C	37.50±1.68	7.211	0.001	0.485	0.695	0.619	0.772
N	12.90±2.53	10.068	<0.001	50.365	<0.001	1.215	0.321
P	1.73±0.49	54.281	<0.001	133.023	<0.001	2.573	0.024
C∶N	3.02±0.62	11.224	<0.001	40.099	<0.001	1.005	0.456
C∶P	23.66±7.59	27.270	<0.001	82.913	<0.001	1.194	0.332
N∶P	7.82±1.79	26.934	<0.001	11.529	<0.001	0.607	0.782

化学计量 Stoichiometric	平均值 Mean±SD	土层深度 Soil depth		生长期 Growth period		土层深度生长期 Soil depthGrowth period
化学计量 Stoichiometric	平均值 Mean±SD	F	P	F	P	F	P
SOC	0.16±0.05	114.781	<0.001	12.427	<0.001	5.573	0.001
TN	0.11±0.04	113.868	<0.001	13.621	<0.001	2.117	0.089
TP	0.35±0.02	4.944	0.016	4.586	0.011	0.694	0.657
SOC∶TN	1.63±0.59	8.023	0.002	24.563	<0.001	6.103	0.001
SOC∶TP	0.45±0.13	85.479	<0.001	10.619	<0.001	5.617	0.001
TN∶TP	0.31±0.12	72.991	<0.001	12.732	<0.001	1.186	0.347

[1]	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.
[2]	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.
[3]	Weiwei ZHUANG, Mingming WANG. Comparative Analysis of Nutrient Elements of Eight Herbaceous Plants in Desert Area [J]. Bulletin of Botanical Research, 2022, 42(5): 896-909.
[4]	TAN Yong-Jia, GAO Cui-Fang, CHEN Xue-Lin. Comparison of Essential Oil Components in Ajania tenuifolia(Jacq.) Tzvel. at Different Altitudes [J]. Bulletin of Botanical Research, 2020, 40(5): 782-788.
[5]	CAI Nian-Hui, WANG Da-Wei, HUANG Wen-Xue, WU Jun-Wen, WANG Jun-Min, CHEN Shi, XU Yu-Lan, DUAN An-An. Correlation and Path Analysis on Growth Traits and Biomass of Pinus yunnanensis Seedlings [J]. Bulletin of Botanical Research, 2019, 39(6): 853-862.
[6]	GUO Hao, ZHUANG Wei-Wei, LI Jin. Characteristics of Biomass and Stoichiometry of Four Desert Herbaceous Plants In the Gurbantunggut Desert [J]. Bulletin of Botanical Research, 2019, 39(3): 421-430.
[7]	ZHOU Li-Jun, YU Chao, CHANG Xiao, WAN Hui-Hua, LUO Le, PAN Hui-Tang, ZHANG Qi-Xiang. Variation Analysis of Phenotypic Traits in F₁ Population of Rosa spp [J]. Bulletin of Botanical Research, 2019, 39(1): 131-138.
[8]	CHANG Bo-Wen, LIU Jie, ZHONG Peng, GUO Xiao-Rui. Effects of Exogenous Ethylene on Physiology and Alkaloid Accumulations in Catharanthus roseus [J]. Bulletin of Botanical Research, 2018, 38(2): 284-291.
[9]	ZHUANG Wei-Wei, ZHOU Xiao-Bing, ZHANG Yuan-Ming. Effects of Biological Soil Crusts on Growth and Nutrient Uptake in Three Desert Herbs in the Gurbantunggut Desert,Northwestern China [J]. Bulletin of Botanical Research, 2017, 37(1): 37-44.
[10]	HUNG Wen-Juan, JIAO Pei-Pei, HUANG Jin-Hua, ZHANG Dan. Leaf Anatomical Structure of Populus euphratica in Tarim River Basin [J]. Bulletin of Botanical Research, 2016, 36(5): 669-675.
[11]	LI Hui, WANG Bai-Tian, CAO Yuan-Bo, LIU Qing-Qing, LI De-Ning. Difference Feature of Planted Vegetation Biomass and Litter Biomass for Three Plantations and Their Relationship with Soil Nutrients in Lvliang Mountainous Region [J]. Bulletin of Botanical Research, 2016, 36(4): 573-580.
[12]	LUO Meng, HU Jiao-Yang, SONG Zhuo-Yue, MU Fan-Song, YU Xue-Ying, QIAO Qi, RUAN Xin, YANG Xuan, ZU Yuan-Gang. Seasonal Variation of Total Flavonoids from Crataegus pinnatifida and Correlation Analysis of Climatic Factors [J]. Bulletin of Botanical Research, 2016, 36(3): 476-480.
[13]	XU Bin1；PENG Li-Xia2；YANG Hui-Xiao1；PAN Wen1；ZHANG Fang-Qiu1. Genetic Diversity Analysis for Leaf Main Traits of Camellia azalea* [J]. Bulletin of Botanical Research, 2015, 35(5): 730-734.
[14]	LIU Dian-Kun1；LIU Meng-Ran1；LI Zhi-Xin1；WANG Guang-Yu2；LI Ying1；ZHENG Mi1；LIU Gui-Feng1；ZHAO Xi-Yang1. Variation Analysis of Growth Traits of Transgenic Populus simonii×P.nigra* Clones Carrying TaLEA Gene [J]. Bulletin of Botanical Research, 2015, 35(4): 540-546.
[15]	YANG Qing-Xiao；ZHU Liang-Jun；WANG Xiao-Chun. Development of Pinus koraiensis Tree-ring Chronology and Master Year Analysis in Liangshui National Natural Reserve,China [J]. Bulletin of Botanical Research, 2015, 35(3): 418-424.