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Decreased Soil Cation Exchange Capacity Across Northern China's Grasslands Over the Last Three Decades

文献类型：期刊论文

作者Fang, Kai1; Kou, Dan1; Wang, Guanqin1; Chen, Leiyi; Ding, Jinzhi1; Li, Fei1; Yang, Guibiao1; Qin, Shuqi1; Liu, Li1; Zhang, Qiwen1
刊名JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
出版日期2017
卷号122期号:11页码:3088-3097
关键词environmental change geochemistry grassland ecosystems soil carbon loss soil desertification soil acidification
ISSN号2169-8953
DOI10.1007/s11105-016-1011-1
文献子类Article
英文摘要Cation exchange capacity (CEC) helps soils hold nutrients and buffer pH, making it vital for maintaining basic function of terrestrial ecosystems. However, little is known about the temporal dynamics of CEC over broad geographical scales. In this study, we used random forest method to compare historical CEC data from the 1980s with new data from the 2010s across northern China's grasslands. We found that topsoil CEC in the 2010s was significantly lower than in the 1980s, with an overall decline of about 14%. Topsoil CEC decreased significantly in alpine meadow, alpine steppe, meadow steppe, and typical steppe by 11%, 20%, 27%, and 9%, respectively. Desert steppe was the only ecosystem type that experienced no significant change. CEC was positively related to soil carbon content, silt content, and mean annual precipitation, suggesting that the decline was potentially associated with soil organic carbon loss, soil degradation, soil acidification, and extreme precipitation across northern China's grasslands since the 1980s. Overall, our results demonstrate topsoil CEC loss due to environmental changes, which may alter the vegetation community composition and its productivity and thus trigger grassland dynamics under a changing environment.
学科主题Biochemistry & Molecular Biology ; Plant Sciences
出版地WASHINGTON
电子版国际标准刊号2169-8961
WOS关键词ORGANIC-CARBON STOCKS ; NITROGEN DEPOSITION ; BUFFERING CAPACITY ; PLANT DIVERSITY ; RANDOM FORESTS ; WIND EROSION ; ACIDIFICATION ; MATTER ; PH ; PRECIPITATION
语种英语
WOS记录号WOS:000394150700012
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670482, 41371213] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049] ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team ; Thousand Young Talents ProgramChinese Academy of Sciences
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/22122]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Kai,Kou, Dan,Wang, Guanqin,et al. Decreased Soil Cation Exchange Capacity Across Northern China's Grasslands Over the Last Three Decades[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2017,122(11):3088-3097.
APA Fang, Kai.,Kou, Dan.,Wang, Guanqin.,Chen, Leiyi.,Ding, Jinzhi.,...&Yang, Yuanhe.(2017).Decreased Soil Cation Exchange Capacity Across Northern China's Grasslands Over the Last Three Decades.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,122(11),3088-3097.
MLA Fang, Kai,et al."Decreased Soil Cation Exchange Capacity Across Northern China's Grasslands Over the Last Three Decades".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 122.11(2017):3088-3097.

入库方式： OAI收割

来源：植物研究所

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