Patterns and driving mechanism of soil organic carbon, nitrogen, and phosphorus stoichiometry across northern China's desert-grassland transition zone

被引:76
作者
Lu, Jiannan [1 ,2 ]
Feng, Shuang [3 ]
Wang, Shaokun [1 ,4 ]
Zhang, Baolong [5 ]
Ning, Zhiying [1 ,2 ]
Wang, Ruixiong [1 ,2 ]
Chen, Xueping [1 ,2 ]
Yu, Liangliang [5 ]
Zhao, Hongsheng [3 ]
Lan, Dengming [3 ]
Zhao, Xueyong [1 ,4 ]
机构
[1] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert grassland Res Stn, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Hohhot 010018, Peoples R China
[4] Key Lab Stress Physiol & Ecol, Lanzhou 730000, Gansu, Peoples R China
[5] Bayannur Meteorol Bur, Xinhua West St, Bayannur 015000, Inner Mongolia, Peoples R China
关键词
Desert grassland; Soil depth; Environmental drivers; C; N; P stoichiometry; N-P STOICHIOMETRY; GLOBAL PATTERNS; PLANT; CLIMATE; ECOSYSTEMS; LIMITATION; FEEDBACKS; RESPONSES; DYNAMICS; ARIDITY;
D O I
10.1016/j.catena.2022.106695
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Desert-grassland transition zone is a critical ecological barrier frontier against sandstorms and desertification in northern China. Soil nutrient stoichiometry is closely related to plant community biomass, biodiversity, ecosystem functions and stability. However, how the relationship between climate, vegetation, and soil property drives the spatial pattern of soil nutrient stoichiometry remains unclear. We investigated soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) contents and their ratios (C:N, C:P and N:P) from 82 sites located in a desert-grassland transition zone in Inner Mongolia. SOC, TN, and TP contents, and soil C:P and N:P ratios were higher in typical grassland than that in shrub desert, higher in aridisols than in desert soil and desert eolian sand soil. The C:N ratio showed no significant difference between different vegetation types. SOC and TN contents showed an apparent decrease with soil depth in aridisols, of which the surface was well-covered by herbaceous plants. Soil TP content, C:N, C:P, and N:P ratios are different primarily among soil types, but not along soil depth, which may be mainly attributed to SOC, TN, and TP changed synergistically and weak soil leaching in desert areas. Redundancy analysis showed that precipitation, and silt and clay content were the most critical factors influencing SOC, TN, and TP stoichiometry. Structural equation modeling revealed that precip-itation could impact soil nutrient stoichiometry by affecting the vegetation and soil physicochemical properties. Temperature and soil pH had impact on the mineralization and decomposition of organic matters, and significant direct and negative effect on SOC, TN, C:P, and N:P (except MAT) ratio. Our results highlighted the importance of current climate change on soil organic C, TN, and TP contents and C:N:P stoichiometry, and future climate change and its eco-impact in the desert-grassland transition zone.
引用
收藏
页数:11
相关论文
共 55 条
[1]  
Aerts R, 2000, ADV ECOL RES, V30, P1, DOI 10.1016/S0065-2504(08)60016-1
[2]  
Bao S.D., 2000, Soil and agricultural chemistry analysis
[3]   C:N:P stoichiometry in Australian soils with respect to vegetation and environmental factors [J].
Bui, Elisabeth N. ;
Henderson, Brent L. .
PLANT AND SOIL, 2013, 373 (1-2) :553-568
[4]   A plant-microbe interaction framework explaining nutrient effects on primary production [J].
Capek, Petr T. ;
Manzoni, Stefano ;
Kastovska, Eva ;
Wild, Birgit ;
Diakova, Katerina ;
Barta, Jiri ;
Schnecker, Jorg ;
Blasi, Christina ;
Martikainen, Pertti J. ;
Alves, Ricardo Jorge Eloy ;
Guggenberger, Georg ;
Gentsch, Norman ;
Hugelius, Gustaf ;
Palmtag, Juri ;
Mikutta, Robert ;
Shibistova, Olga ;
Urich, Tim ;
Schleper, Christa ;
Richter, Andreas ;
Santruckova, Hana .
NATURE ECOLOGY & EVOLUTION, 2018, 2 (10) :1588-1596
[5]   Vertical distribution of soil carbon, nitrogen, and phosphorus in typical Chinese terrestrial ecosystems [J].
Chai Hua ;
Yu Guirui ;
He Nianpeng ;
Wen Ding ;
Li Jie ;
Fang Jiangping .
CHINESE GEOGRAPHICAL SCIENCE, 2015, 25 (05) :549-560
[6]  
Chinese Academy of Sciences, 2001, VEG ATL CHIN
[7]   C:N:P stoichiometry in soil:: is there a "Redfield ratio" for the microbial biomass? [J].
Cleveland, Cory C. ;
Liptzin, Daniel .
BIOGEOCHEMISTRY, 2007, 85 (03) :235-252
[8]   Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone [J].
Cui, Yongxing ;
Fang, Linchuan ;
Guo, Xiaobin ;
Wang, Xia ;
Wang, Yunqiang ;
Li, Pengfei ;
Zhang, Yanjiang ;
Zhang, Xingchang .
SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 642 :45-55
[9]   Soil carbon dynamics in regrowing forest of eastern Amazonia [J].
de Camargo, PB ;
Trumbore, SE ;
Martinelli, LA ;
Davidson, EA ;
Nepstad, DC ;
Victoria, RL .
GLOBAL CHANGE BIOLOGY, 1999, 5 (06) :693-702
[10]   Decoupling of soil nutrient cycles as a function of aridity in global drylands [J].
Delgado-Baquerizo, Manuel ;
Maestre, Fernando T. ;
Gallardol, Antonio ;
Bowker, Matthew A. ;
Wallenstein, Matthew D. ;
Luis Quero, Jose ;
Ochoa, Victoria ;
Gozalo, Beatriz ;
Garcia-Gomez, Miguel ;
Soliveres, Santiago ;
Garcia-Palacios, Pablo ;
Berdugo, Miguel ;
Valencia, Enrique ;
Escolar, Cristina ;
Arredondo, Turin ;
Barraza-Zepeda, Claudia ;
Bran, Donald ;
Antonio Carreiral, Jose ;
Chaieb, Mohamed ;
Conceicao, Abel A. ;
Derak, Mchich ;
Eldridge, David J. ;
Escudero, Adrian ;
Espinosa, Carlos I. ;
Gaitan, Juan ;
Gatica, M. Gabriel ;
Gomez-Gonzalez, Susana ;
Guzman, Elizabeth ;
Gutierrez, Julio R. ;
Florentino, Adriana ;
Hepper, Estela ;
Hernandez, Rosa M. ;
Huber-Sannwald, Elisabeth ;
Jankju, Mohammad ;
Liu, Jushan ;
Mau, Rebecca L. ;
Miriti, Maria ;
Monerris, Jorge ;
Naseri, Kamal ;
Noumi, Zouhaier ;
Polo, Vicente ;
Prina, Anibal ;
Pucheta, Eduardo ;
Ramirez, Elizabeth ;
Ramirez-Collantes, David A. ;
Romao, Roberto ;
Tighe, Matthew ;
Torres, Duiio ;
Torres-Diaz, Cristian ;
Ungar, Eugene D. .
NATURE, 2013, 502 (7473) :672-+