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

doi:10.1007/s11105-016-1011-1

	Decreased Soil Cation Exchange Capacity Across Northern China's Grasslands Over the Last Three Decades
	Fang, Kai 1; Kou, Dan 1; Wang, Guanqin 1; Chen, Leiyi ; Ding, Jinzhi 1; Li, Fei 1; Yang, Guibiao 1; Qin, Shuqi 1; Liu, Li 1; Zhang, Qiwen 1; Yang, Yuanhe1
	2017
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
卷号	122 期号:11 页码:3088-3097
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.
关键词	environmental change geochemistry grassland ecosystems soil carbon loss soil desertification soil acidification
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
DOI	10.1007/s11105-016-1011-1
收录类别	SCI
语种	英语
WOS关键词	ORGANIC-CARBON STOCKS ; NITROGEN DEPOSITION ; BUFFERING CAPACITY ; PLANT DIVERSITY ; RANDOM FORESTS ; WIND EROSION ; ACIDIFICATION ; MATTER ; PH ; PRECIPITATION
WOS记录号	WOS:000394150700012
出版者	AMER GEOPHYSICAL UNION
文献子类	Article
出版地	WASHINGTON
EISSN	2169-8961
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
作者邮箱	yhyang@ibcas.ac.cn
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.

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