Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2017JG003968 |
Decreased Soil Cation Exchange Capacity Across Northern China’s Grasslands Over the Last Three Decades | |
Fang, Kai1,2; Kou, Dan1,2; Wang, Guanqin1,2; Chen, Leiyi1; Ding, Jinzhi1,2; Li, Fei1,2; Yang, Guibiao1,2; Qin, Shuqi1,2; Liu, Li1,2; Zhang, Qiwen1,2; Yang, Yuanhe1,2 | |
通讯作者 | Yang, Yuanhe |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES |
ISSN | 2169-8953 |
EISSN | 2169-8961 |
出版年 | 2017 |
卷号 | 122期号:11页码:3088-3097 |
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. |
英文关键词 | environmental change geochemistry grassland ecosystems soil carbon loss soil desertification soil acidification |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000418086800025 |
WOS关键词 | QINGHAI-TIBETAN PLATEAU ; ORGANIC-CARBON STOCKS ; NITROGEN DEPOSITION ; BUFFERING CAPACITY ; INNER-MONGOLIA ; RANDOM FORESTS ; PLANT DIVERSITY ; SEMIARID STEPPE ; WIND EROSION ; ACIDIFICATION |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
来源机构 | 中国科学院植物研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200520 |
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,等. Decreased Soil Cation Exchange Capacity Across Northern China’s Grasslands Over the Last Three Decades[J]. 中国科学院植物研究所,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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