Scaling relationships and stoichiometry of plant leaf biogenic elements from the arid-hot valley of Jinsha River, China

doi:10.3724/SP.J.1258.2012.01136

Abstract

Abstract:

Aims Plant leaf stoichiometry plays critical roles in the photosynthesis rate, growth rate, dynamics of food chains and biogeochemical cycles. Although previous research showed that nitrogen has a scaling relationship with phosphorus, the relationship between elements besides nitrogen and phosphorus rarely have been studied. This project was to explore the scaling relationships between leaf elements (i.e., Fe, Ca, P, N, S, K) at an arid-hot valley.
Methods Leaf samples were collected from 51 plots located 1000-1400 m above sea level in the arid-hot valley of Jinsha River. Biomass in plots was sorted by species and measured. Leaf elemental contents of 107 samples were qualified. Relationships among these biogenetic elements were analyzed by standard major axis at both plot and individual levels.
Important findings There were always positive scaling relationships between studied elements when they were significantly correlated. The power law exponents derived from log-log scaling relations were near 2/3 for nitrogen relative to phosphorus at the plot level. The power law exponents for iron to N, P, K were >2 at the individual level. The rank of increasing rate in scaling relationships was Fe > Ca > P > N > S > K at the individual level. However, it was Fe > Ca > P > S > K > N at the plot level. We found that iron might be an important element in plant growth in the arid-hot valley for the higher increasing rate of investment in iron versus other elements. The differences in scaling relationships among elemental concentrations between the individual and plot levels suggest that community assembly process has an important role in determining plant stoichiometry at different levels of organization.

Key words: allometric relationship, arid-hot valley, biogenic element, plant nutrient, stoichiometry

YAN Bang-Guo, HE Guang-Xiong, LI Ji-Chao, JI Zhong-Hua. Scaling relationships and stoichiometry of plant leaf biogenic elements from the arid-hot valley of Jinsha River, China[J]. Chin J Plant Ecol, 2012, 36(11): 1136-1144.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2012.01136

https://www.plant-ecology.com/EN/Y2012/V36/I11/1136

Figures/Tables 5

References 42

1	Ågren GI ( 2008). Stoichiometry and nutrition of plant growth in natural communities. Annual Review of Ecology, Evolution, and Systematics, 39, 153-170. DOI URL
2	Barron AR, Wurzburger N, Bellenger JP, Wright SJ, Kraepiel AML, Hedin LO ( 2009). Molybdenum limitation of asymbiotic nitrogen fixation in tropical forest soils. Nature Geoscience, 2, 42-45. DOI URL
3	Boyd PW, Watson AJ, Law CS, Abraham ER, Trull T, Murdoch R, Bakker DCE, Bowie AR, Buesseler KO, Chang H, Charette M, Croot P, Downing K, Frew R, Gall M, Hadfield M, Hall J, Harvey M, Jameson G, Laroche J, Liddicoat M, Ling R, Maldonado MT, McKay RM, Nodder S, Pickmere S, Pridmore R, Rintoul S, Safi K, Sutton P, Strzepek R, Tanneberger K, Turner S, Waite A, Zeldis J ( 2000). A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization. Nature, 407, 695-702. DOI URL
4	Clark CM, Tilman D ( 2008). Loss of plant species after chronic low-level nitrogen deposition to prairie grasslands. Nature, 451, 712-715. DOI URL
5	Cleveland CC, Liptzin D ( 2007). C:N:P stoichiometry in soil: Is there a “Redfield ratio” for the microbial biomass? Biogeochemistry, 85, 235-252. DOI URL
6	Deutsch C, Weber T ( 2012). Nutrient ratios as a tracer and driver of ocean biogeochemistry. Annual Review of Marine Science, 4, 113-141. DOI URL
7	Elser JJ, Acharya K, Kyle M, Cotner J, Makino W, Markow T, Watts T, Hobbie S, Fagan W, Schade J, Hood J, Sterner RW ( 2003). Growth rate-stoichiometry couplings in diverse biota. Ecology Letters, 6, 936-943. DOI URL
8	Elser JJ, Acquisti C, Kumar S ( 2011). Stoichiogenomics: the evolutionary ecology of macromolecular elemental composition. Trends in Ecology and Evolution, 26, 38-44. DOI URL
9	Elser JJ, Dobberfuhl DR, MacKay NA, Schampel JH ( 1996). Organism size, life history, and N:P stoichiometry. BioScience, 46, 674-684. DOI URL
10	Elser JJ, Fagan WF, Kerkhoff AJ, Swenson NG, Enquist BJ ( 2010). Biological stoichiometry of plant production: metabolism, scaling and ecological response to global change. New Phytologist, 186, 593-608. DOI URL
11	Elser JJ, Urabe J ( 1999). The stoichiometry of consumer-driven nutrient recycling: theory, observations, and conse- quences. Ecology, 80, 735-751. DOI URL
12	Gleeson SK, Good RE ( 2003). Root allocation and multiple nutrient limitation in the New Jersey pinelands. Ecology Letters, 6, 220-227. DOI URL
13	Güsewell S, Gessner MO ( 2009). N:P ratios influence litter decomposition and colonization by fungi and bacteria in microcosms. Functional Ecology, 23, 211-219. DOI URL
14	Han WX, Fang JY, Reich PB, Ian Woodward F, Wang ZH ( 2011). Biogeography and variability of eleven mineral elements in plant leaves across gradients of climate, soil and plant functional type in China. Ecology Letters, 14, 788-796. DOI URL
15	He JS, Flynn DFB, Wolfe-Bellin K, Fang J, Bazzaz FA ( 2005). CO₂ and nitrogen, but not population density, alter the size and C/N ratio of Phytolacca americana seeds. Functional Ecology, 19, 437-444. DOI URL
16	He JS ( 贺金生), Han XG ( 韩兴国 ) ( 2010). Ecological stoichiometry: searching for unifying principles from individuals to ecosystems. Chinese Journal of Plant Ecology (植物生态学报), 34, 2-6. (in Chinese with English abstract) DOI URL
17	Joern A, Provin T, Behmer ST ( 2011). Not just the usual suspects: insect herbivore populations and communities are associated with multiple plant nutrients. Ecology, 93, 1002-1015. DOI URL
18	Kerkhoff AJ, Enquist BJ ( 2006). Ecosystem allometry: the scaling of nutrient stocks and primary productivity across plant communities. Ecology Letters, 9, 419-427. DOI URL
19	Kerkhoff AJ, Fagan WF, Elser JJ, Enquist BJ ( 2006). Phylogenetic and growth form variation in the scaling of nitrogen and phosphorus in the seed plants. The American Naturalist, 168, E103-E122. DOI URL
20	Koerselman W, Meuleman AFM ( 1996). The vegetation N:P ratio: a new tool to detect the nature of nutrient limitation. Journal of Applied Ecology, 33, 1441-1450.
21	Langley JA, Megonigal JP ( 2010). Ecosystem response to elevated CO₂ levels limited by nitrogen-induced plant species shift. Nature, 466, 96-99. DOI URL
22	Loladze I, Elser JJ ( 2011). The origins of the Redfield nitrogen-to-phosphorus ratio are in a homoeostatic protein-to-rRNA ratio. Ecology Letters, 14, 244-550. DOI URL
23	Ma JF, Yamaji N ( 2006). Silicon uptake and accumulation in higher plants. Trends in Plant Science, 11, 392-397. DOI URL
24	O’Hara GW, Dilworth MJ, Boonkerd N, Parkpian P ( 1988). Iron-deficiency specifically limits nodule development in peanut inoculated with Bradyrhizobium sp. New Phyto- logist, 108, 51-57.
25	Redfield AC (1934). On the proportions of organic derivatives in sea water and their relation to the composition of plankton. In: Daniel RJ ed. James Johnstone Memorial. Liverpool University Press, Liverpool, UK.
26	Reich PB, Oleksyn J ( 2004). Global patterns of plant leaf N and P in relation to temperature and latitude. Proceedings of the National Academy of Sciences of the United States of America, 101, 11001-11006.
27	Reich PB, Oleksyn J, Wright IJ, Niklas KJ, Hedin L, Elser JJ ( 2010). Evidence of a general 2/3-power law of scaling leaf nitrogen to phosphorus among major plant groups and biomes. Proceedings of the Royal Society B: Biological Sciences, 277, 877-883. DOI URL
28	Rivas-Ubach A, Sardans J, Pérez-Trujillo M, Estiarte M, Peñuelas J ( 2012). Strong relationship between elemental stoichiometry and metabolome in plants. Proceedings of the National Academy of Sciences of the United States of America, 109, 4181-4186.
29	Sañudo-Wilhelmy SA, Kustka AB, Gobler CJ, Hutchins DA, Yang M, Lwiza K, Burns J, Capone DG, Raven JA, Carpenter EJ ( 2001). Phosphorus limitation of nitrogen fixation by Trichodesmium in the central Atlantic Ocean. Nature, 411, 66-69. DOI URL
30	Smith RJ ( 2009). Use and misuse of the reduced major axis for line-fitting. American Journal of Physical Anthropology, 140, 476-486. DOI URL
31	Sokal RR, Rohlf FJ ( 1995). Biometry: the Principles and Practice of Statistics in Biological Research 3rd edn. Freeman, New York.
32	Sterner RW, Elser JJ, Vitousek P (2002). Ecological Stoichiometry: the Biology of Elements from Molecules to the Biosphere. Princeton University Press, Princeton.
33	Suding KN, Collins SL, Gough L, Clark C, Cleland EE, Gross KL, Milchunas DG, Pennings S ( 2005). Functional- and abundance-based mechanisms explain diversity loss due to N fertilization. Proceedings of the National Academy of Sciences of the United States of America, 102, 4387-4392.
34	Tian HQ, Chen GS, Zhang C, Melillo JM, Hall CAS ( 2010). Pattern and variation of C:N:P ratios in China’s soils: a synthesis of observational data. Biogeochemistry, 98, 139-151. DOI URL
35	Tilman D (1982). Resource Competition and Community Structure. Princeton University Press, Princeton.
36	Tsuda A, Takeda S, Saito H, Nishioka J, Nojiri Y, Kudo I, Kiyosawa H, Shiomoto A, Imai K, Ono T, Shimamoto A, Tsumune D, Yoshimura T, Aono T, Hinuma A, Kinugasa M, Suzuki K, Sohrin Y, Noiri Y, Tani H, Deguchi Y, Tsurushima N, Ogawa H, Fukami K, Kuma K, Saino T ( 2003). A mesoscale iron enrichment in the western subarctic Pacific induces a large centric diatom bloom. Science, 300, 958-961. DOI URL
37	Vanni MJ, Flecker AS, Hood JM, Headworth JL ( 2002). Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and ecosystem processes. Ecology Letters, 5, 285-293. DOI URL
38	Yan ER ( 阎恩荣), Wang XH ( 王希华), Zhou W ( 周武 ) ( 2008). C:N:P stoichiometry across evergreen broad-leaved forests, evergreen coniferous forests and deciduous broad- leaved forests in the Tiantong region, Zhejiang Province, eastern China. Journal of Plant Ecology (Chinese Version) (植物生态学报), 32, 13-22. (in Chinese with English abstract)
39	Yang YH, Luo YQ, Lu M, Schädel C, Han WX ( 2011). Terrestrial C:N stoichiometry in response to elevated CO₂ and N addition: a synthesis of two meta-analyses. Plant and Soil, 343, 393-400. DOI URL
40	Yu Q, Chen QS, Elser JJ, He NP, Wu HH, Zhang GM, Wu JG, Bai YF, Han XG ( 2010). Linking stoichiometric homo- eostasis with ecosystem structure, functioning and stability. Ecology Letters, 13, 1390-1399. DOI URL
41	Yu Q, Elser J, He NP, Wu HH, Chen QS, Zhang GM, Han XG ( 2011). Stoichiometric homeostasis of vascular plants in the Inner Mongolia grassland. Oecologia, 166, 1-10. DOI URL
42	Zhang JP ( 张建平), Wang DJ ( 王道杰), Wang YK ( 王玉宽), Wen AB ( 文安邦 ) ( 2000). Discusses on eco-environment changes in dry-hot valley of Yuanmou. Scientia Geogra- phica Sinica (地理科学), 20, 148-152. (in Chinese with English abstract)

斜率 Slope	P	N	K	S	Fe	Ca
P		0.641 (0.518-0.792)\|0.45	0.819 (0.625-1.072)\|0.10	0.880 (0.666-1.162)\|0.03	1.673 (1.337-2.093)\|0.38	1.600 (1.217-2.102)\|0.06
N	0.912 (0.784-1.061)\|0.38		1.278 (0.969-1.685)\|0.05	1.373 ( 1.064-1.772)\|0.19	2.611 (2.076-3.283)\|0.35	2.497 (1.961-3.180)\|0.28
K	0.861 (0.721-1.029)\|0.14	0.944 (0.787-1.133)\|0.32		-1.074 (-1.418- -0.814)\|0.04	2.043 (1.586-2.632)\|0.21	1.954 (1.476-2.588)\|0.02
S	0.964 (0.721-1.037)\|0.32	0.948 (0.793-1.133)\|0.14	1.004 (0.829-1.216)\|0.01		-1.902 (-2.521- -1.435)\|0.01	1.819 (1.371-2.414)\|0.00
Fe	2.169 (1.830-2.572)\|0.22	2.379 (2.015-2.809)\|0.26	2.519 (2.087-3.042)\|0.04	2.509 (2.073-3.037)\|0.02		0.956 (0.740-1.236)\|0.18
Ca	1.902 (1.587-2.280)\|0.11	2.086 (1.777-2.449)\|0.31	2.209 (1.830-2.667)\|0.04	2.200 (1.816-2.666)\|0.00	0.877 (0.737-1.043)\|0.19

斜率 Slope	P	N	K	S	Fe	Ca
P		0.641 (0.518-0.792)\|0.45	0.819 (0.625-1.072)\|0.10	0.880 (0.666-1.162)\|0.03	1.673 (1.337-2.093)\|0.38	1.600 (1.217-2.102)\|0.06
N	0.912 (0.784-1.061)\|0.38		1.278 (0.969-1.685)\|0.05	1.373 ( 1.064-1.772)\|0.19	2.611 (2.076-3.283)\|0.35	2.497 (1.961-3.180)\|0.28
K	0.861 (0.721-1.029)\|0.14	0.944 (0.787-1.133)\|0.32		-1.074 (-1.418- -0.814)\|0.04	2.043 (1.586-2.632)\|0.21	1.954 (1.476-2.588)\|0.02
S	0.964 (0.721-1.037)\|0.32	0.948 (0.793-1.133)\|0.14	1.004 (0.829-1.216)\|0.01		-1.902 (-2.521- -1.435)\|0.01	1.819 (1.371-2.414)\|0.00
Fe	2.169 (1.830-2.572)\|0.22	2.379 (2.015-2.809)\|0.26	2.519 (2.087-3.042)\|0.04	2.509 (2.073-3.037)\|0.02		0.956 (0.740-1.236)\|0.18
Ca	1.902 (1.587-2.280)\|0.11	2.086 (1.777-2.449)\|0.31	2.209 (1.830-2.667)\|0.04	2.200 (1.816-2.666)\|0.00	0.877 (0.737-1.043)\|0.19

物种 Species	S (mg·g^-1)	P (mg·kg^-1)	K (mg·g^-1)	Ca (mg·g^-1)	Fe (mg·kg^-1)	N (mg·g^-1)
橘草 Cymbopogon goeringii	1.57	632.00	9.59	8.07	192.84	10.79
孔颖草 Bothriochloa pertusa	1.30	945.15	11.90	6.73	327.69	11.02
黄茅 Heteropogon contortus	1.24	539.80	5.58	4.33	149.13	8.58
独穗飘拂草 Fimbristylis monostachya	1.34	740.22	12.42	3.52	276.38	8.52
双花草 Dichanthium annulatum	0.98	663.67	8.51	5.57	194.52	8.42
假杜鹃 Barleria cristata	0.97	896.00	15.00	47.33	506.17	16.54
拟金茅 Eulaliopsis binata	0.66	490.60	10.06	4.66	199.41	7.80
白灰毛豆 Tephrosia candida	1.41	857.20	11.95	15.77	225.40	27.53
刺芒野古草 Arundinella setosa	2.78	471.75	8.14	5.45	115.80	7.70
蔓草虫豆 Cajanus scarabaeoides var. scarabaeoides	1.29	1040.00	13.04	9.22	535.25	20.28
茅叶荩草 Arthraxon prionodes	1.36	845.75	7.46	16.20	259.00	10.65
裂稃草 Schizachyrium brevifolium	0.96	473.50	5.64	4.57	212.50	7.30
扁穗莎草 Cyperus compressus	1.69	773.00	6.44	4.54	106.00	10.15
叶下珠 Phyllanthus urinaria	2.01	1437.00	10.15	9.93	599.67	14.50
垫状卷柏 Selaginella pulvinata	1.34	791.00	4.49	1.71	832.00	14.30
三芒草 Aristida adscensionis	1.12	1750.00	7.89	3.85	757.00	11.50
西南飘拂草 Fimbristylis thomsonii	3.44	924.00	21.00	6.95	93.20	8.10
大叶千斤拔 Flemingia macrophylla	1.14	1310.00	9.50	9.28	1241.00	17.30
单叶木蓝 Indigofera linifolia	1.01	1043.50	6.03	84.60	521.50	15.30
白背黄花稔 Sida rhombifolia	1.30	1648.00	14.90	10.60	498.00	17.70
丁癸草 Zornia gibbosa	1.71	832.10	13.80	10.80	608.00	24.30
棕茅窗体顶端 Eulalia phaeothrix 窗体底端	1.33	501.00	7.87	6.25	152.67	7.80
四脉金茅 Eulalia quadrinervis	0.87	438.50	12.25	4.04	127.10	7.20

物种 Species	S (mg·g^-1)	P (mg·kg^-1)	K (mg·g^-1)	Ca (mg·g^-1)	Fe (mg·kg^-1)	N (mg·g^-1)
橘草 Cymbopogon goeringii	1.57	632.00	9.59	8.07	192.84	10.79
孔颖草 Bothriochloa pertusa	1.30	945.15	11.90	6.73	327.69	11.02
黄茅 Heteropogon contortus	1.24	539.80	5.58	4.33	149.13	8.58
独穗飘拂草 Fimbristylis monostachya	1.34	740.22	12.42	3.52	276.38	8.52
双花草 Dichanthium annulatum	0.98	663.67	8.51	5.57	194.52	8.42
假杜鹃 Barleria cristata	0.97	896.00	15.00	47.33	506.17	16.54
拟金茅 Eulaliopsis binata	0.66	490.60	10.06	4.66	199.41	7.80
白灰毛豆 Tephrosia candida	1.41	857.20	11.95	15.77	225.40	27.53
刺芒野古草 Arundinella setosa	2.78	471.75	8.14	5.45	115.80	7.70
蔓草虫豆 Cajanus scarabaeoides var. scarabaeoides	1.29	1040.00	13.04	9.22	535.25	20.28
茅叶荩草 Arthraxon prionodes	1.36	845.75	7.46	16.20	259.00	10.65
裂稃草 Schizachyrium brevifolium	0.96	473.50	5.64	4.57	212.50	7.30
扁穗莎草 Cyperus compressus	1.69	773.00	6.44	4.54	106.00	10.15
叶下珠 Phyllanthus urinaria	2.01	1437.00	10.15	9.93	599.67	14.50
垫状卷柏 Selaginella pulvinata	1.34	791.00	4.49	1.71	832.00	14.30
三芒草 Aristida adscensionis	1.12	1750.00	7.89	3.85	757.00	11.50
西南飘拂草 Fimbristylis thomsonii	3.44	924.00	21.00	6.95	93.20	8.10
大叶千斤拔 Flemingia macrophylla	1.14	1310.00	9.50	9.28	1241.00	17.30
单叶木蓝 Indigofera linifolia	1.01	1043.50	6.03	84.60	521.50	15.30
白背黄花稔 Sida rhombifolia	1.30	1648.00	14.90	10.60	498.00	17.70
丁癸草 Zornia gibbosa	1.71	832.10	13.80	10.80	608.00	24.30
棕茅窗体顶端 Eulalia phaeothrix 窗体底端	1.33	501.00	7.87	6.25	152.67	7.80
四脉金茅 Eulalia quadrinervis	0.87	438.50	12.25	4.04	127.10	7.20

[1]	Lu HAN Feng Yu Li YunKai Wang YuQing Hai-Zhen WANG. Effects of groundwater depth on carbon, nitrogen, phosphorus ecological stoichiometric and homeostasis characteristics of Populus pruinosa leaves and soil in Tarim basin, Xinjiang [J]. Chin J Plant Ecol, 2024, 48(预发表): 0-0.
[2]	LI Hong-Qin, ZHANG Fa-Wei, YI Lü-Bei. Stoichiometric responses in topsoil and leaf of dominant species to precipitation change and nitrogen addition in an alpine meadow [J]. Chin J Plant Ecol, 2023, 47(7): 922-931.
[3]	LI Zhao-Guang, YANG Wen-Gao, HE Gui-Qing, XU Tian-Cai, HE Qiong-Ji, HOU Zhi-Jiang, LI Yan, XUE Run-Guang. Phenological dynamics of nitrogen, phosphorus and potassium stoichiometry in Chenopodium quinoa in northwest Yunnan, China [J]. Chin J Plant Ecol, 2023, 47(5): 724-732.
[4]	LIN Shao-Ying, ZENG Yu, YANG Wen-Wen, CHEN Bin, RUAN Min-Min, YIN Xiao-Lei, YANG Xiang, WANG Wei-Qi. Effects of straw and biochar addition on carbon, nitrogen and phosphorus ecological stoichiometry in Jasminum sambac plant and soil [J]. Chin J Plant Ecol, 2023, 47(4): 530-545.
[5]	LIU Jing, GOU Qian-Qian, WANG Guo-Hua, ZHAO Feng-Xia. Leaf and soil ecological stoichiometry of Caragana korshinskii in windy and sandy hilly region of northwest Shanxi, China [J]. Chin J Plant Ecol, 2023, 47(4): 546-558.
[6]	Xi He Qiu-Hong FENG Pei-Pei ZHANG Han Yang Sao Jun Deng Xiaoping Sun Hua-Jun YIN. Altitudinal patterns of nutrient limiting characteristics of a Abies faxoniana forest based on leaf and soil enzyme stoichiometry in western Sichuan, China [J]. Chin J Plant Ecol, 2023, 47(12): 1646-1657.
[7]	SUN Cai-Li, QIU Mo-Sheng, HUANG Chao-Xiang, WANG Yi-Wei. Characteristics of soil extracellular enzyme activities and their stoichiometry during rocky desertification in southwestern Guizhou, China [J]. Chin J Plant Ecol, 2022, 46(7): 834-845.
[8]	XIAN Ying-Nan, ZHANG Ying, LI Bao-Zhen, LUO Pei, XIAO Run-Lin, WU Jin-Shui. Responses of photosynthetic pigments composition, nitrogen and phosphorus stoichiometric characteristics of Myriophyllum aquaticum to exogenous ammonium [J]. Chin J Plant Ecol, 2022, 46(4): 451-460.
[9]	ZHANG Ying, ZHANG Chang-Hong, WANG Qi-Tong, ZHU Xiao-Min, YIN Hua-Jun. Difference of microbial nutrient limiting characteristics in rhizosphere and bulk soil of coniferous forests under nitrogen deposition in southwest mountain, China [J]. Chin J Plant Ecol, 2022, 46(4): 473-483.
[10]	MOU Wen-Bo, XU Dang-Hui, WANG Xie-Jun, JING Wen-Mao, ZHANG Rui-Ying, GU Yu-Ling, YAO Guang-Qian, QI Shi-Hua, ZHANG Long, GOU Ya-Fei. Soil carbon, nitrogen, and phosphorus stoichiometry along an altitude gradient in shrublands in Pailugou watershed, China [J]. Chin J Plant Ecol, 2022, 46(11): 1422-1431.
[11]	YIN Xiao-Lei, LIU Xu-Yang, JIN Qiang, LI Xian-De, LIN Shao-Ying, YANG Xiang, WANG Wei-Qi, ZHANG Yong-Xun. Effects of different management methods on carbon, nitrogen, and phosphorus contents and their stoichiometric ratios in tea plants [J]. Chin J Plant Ecol, 2021, 45(7): 749-759.
[12]	TIAN Di, YAN Zheng-Bing, FANG Jing-Yun. Review on characteristics and main hypotheses of plant ecological stoichiometry [J]. Chin J Plant Ecol, 2021, 45(7): 682-713.
[13]	XIANG Xiang, HUANG Yong-Mei, YANG Chong-Yao, LI Ze-Qing, CHEN Hui-Ying, PAN Ying-Ping, HUO Jia-Xuan, REN Liang. Effect of altitude on community-level plant functional traits in the Qinghai Lake Basin, China [J]. Chin J Plant Ecol, 2021, 45(5): 456-466.
[14]	ZHU Wan-Wan, WANG Pan, XU Yi-Xin, LI Chun-Huan, YU Hai-Long, HUANG Ju-Ying. Soil enzyme activities and their influencing factors in a desert steppe of northwestern China under changing precipitation regimes and nitrogen addition [J]. Chin J Plant Ecol, 2021, 45(3): 309-320.
[15]	HU Yuan-Liu, CHEN Guo-Yin, CHEN Jing-Wen, SUN Lian-Wei, LI Jian-Ling, DOU Ning, ZHANG De-Qiang, DENG Qi. Effects of long-term simulated acid rain on soil microbial community structure in a monsoon evergreen broad-leaved forest in southern China [J]. Chin J Plant Ecol, 2021, 45(3): 298-308.