干旱区生态环境知识资源中心(Arid): Environmental and management controls of soil carbon storage in grasslands of southwestern China

Arid

DOI	10.1016/j.jenvman.2019.109810
	Environmental and management controls of soil carbon storage in grasslands of southwestern China
	Balasubramanian, D.1; Zhou, Wen-Jun 1; Ji, Hong-Li 3; Grace, John 4; Bai, Xiao-Long 1,5; Song, Qing-Hai 1,2; Liu, Yun-Tong 1; Sha, Li-Qing 1; Fei, Xue-Hai 6; Zhang, Xiang 1,5; Zhao, Jun-Bin 1,7; Zhao, Jun-Fu 8; Tan, Zheng-Hong 5; Zhang, Yi-Ping 1,2
通讯作者	Zhou, Wen-Jun ; Zhang, Yi-Ping
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	254
英文摘要	In order to predict the effects of climate change on the global carbon cycle, it is crucial to understand the environmental factors that affect soil carbon storage in grasslands. In the present study, we attempted to explain the relationships between the distribution of soil carbon storage with climate, soil types, soil properties and topographical factors across different types of grasslands with different grazing regimes. We measured soil organic carbon in 92 locations at different soil depth increments, from 0 to 100 cm in southwestern China. Among soil types, brown earth soils (Luvisols) had the highest carbon storage with 19.5 +/- 2.5 kg m(-2), while chernozem soils had the lowest with 6.8 +/- 1.2 kg m(-2). Mean annual temperature and precipitation, exerted a significant, but, contrasting effects on soil carbon storage. Soil carbon storage increased as mean annual temperature decreased and as mean annual precipitation increased. Across different grassland types, the mean carbon storage for the top 100 cm varied from 7.6 +/- 1.3 kg m(-2) for temperate desert to 17.3 +/- 2.9 kg m(-2) for alpine meadow. Grazing/cutting regimes significantly affected soil carbon storage with lowest value (7.9 +/- 1.5 kg m(-2)) recorded for cutting grass, while seasonal (11.4 +/- 1.3 kg m(-2)) and year-long (12.2 +/- 1.9 kg m(-2)) grazing increased carbon storage. The highest carbon storage was found in the completely ungrazed areas (16.7 +/- 2.9 kg m(-2)). Climatic factors, along with soil types and topographical factors, controlled soil carbon density along a soil depth in grasslands. Environmental factors alone explained about 60% of the total variation in soil carbon storage. The actual depth-wise distribution of soil carbon contents was significantly influenced by the grazing intensity and topographical factors. Overall, policy-makers should focus on reducing the grazing intensity and land conversion for the sustainable management of grasslands and C sequestration.
英文关键词	Grasslands Grazing regimes Grassland management Soil organic carbon Soil carbon storage Topographical variation
类型	Article
语种	英语
国家	Peoples R China ; Scotland ; Norway
收录类别	SCI-E
WOS记录号	WOS:000504777700002
WOS关键词	ORGANIC-CARBON ; INORGANIC CARBON ; EXTREME PRECIPITATION ; VERTICAL-DISTRIBUTION ; ELEVATION GRADIENTS ; YUNNAN PROVINCE ; LAND USE/COVER ; SLOPE ASPECT ; NEW-ZEALAND ; STOCKS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312501
作者单位	1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Menglun 666303, Yunnan, Peoples R China; 2.Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, Xishuangbanna 666303, Peoples R China; 3.Chinese Acad Sci, Lushan Bot Garden Jiangxi Prov, Lushan 332900, Jiangxi, Peoples R China; 4.Univ Edinburgh, Sch GeoSci, Edinburgh EH9 3FF, Midlothian, Scotland; 5.Univ Chinese Acad Sci, Beijing 100039, Peoples R China; 6.Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550018, Guizhou, Peoples R China; 7.Norwegian Inst Bioecon Res, Div Environm & Nat Resources, Dept Terr Ecol, As, Norway; 8.Hainan Univ, Haikou 570228, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Balasubramanian, D.,Zhou, Wen-Jun,Ji, Hong-Li,et al. Environmental and management controls of soil carbon storage in grasslands of southwestern China[J],2020,254.
APA	Balasubramanian, D..,Zhou, Wen-Jun.,Ji, Hong-Li.,Grace, John.,Bai, Xiao-Long.,...&Zhang, Yi-Ping.(2020).Environmental and management controls of soil carbon storage in grasslands of southwestern China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,254.
MLA	Balasubramanian, D.,et al."Environmental and management controls of soil carbon storage in grasslands of southwestern China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 254(2020).