干旱区生态环境知识资源中心(Arid): Detecting the storage and change on topsoil organic carbon in grasslands of Inner Mongolia from 1980s to 2010s

Arid

	Detecting the storage and change on topsoil organic carbon in grasslands of Inner Mongolia from 1980s to 2010s
	Dai Erfu; Zhai Ruixue; Ge Quansheng; Wu Xiuqin
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2014
卷号	24 期号:6 页码:1035-1047
英文摘要	Soil carbon sequestration and potential has been a focal issue in global carbon research. Under the background of global change, the estimation of the size as well as its change of soil organic carbon (SOC) storage is of great importance. Based on soil data from the second national soil survey and field survey during 2011-2012, by using the regression method between sampling soil data and remote sensing data, this paper aimed to investigate spatial distribution and changes of topsoil (0-20 cm) organic carbon storage in grasslands of Inner Mongolia between the 1980s and 2010s. The results showed that: (1) the SOC storage in grasslands of Inner Mongolia between the 1980s and 2010s was estimated to be 2.05 and 2.17 Pg C, with an average density of 3.48 and 3.69 kg C·m~(-2), respectively. The SOC storage was mainly distributed in the typical steppe and meadow steppe, which accounted for over 98% of the total SOC storage. The spatial distribution showed a decreased trend from the meadow steppe, typical steppe to the desert steppe, corresponding to the temperature and precipitation gradient. (2) SOC changes during 1982-2012 were estimated to be 0.12 Pg C,at 7.00 g C·m~(-2) ·yr~(-1), which didnt show a significant change, indicating that SOC storage in grasslands of Inner Mongolia remained relatively stable over this period. However, topsoil organic carbon showed different trends of carbon source/sink during the past three decades.Meadow steppe and typical steppe had sequestered 0.15 and 0.03 Pg C, respectively, served as a carbon sink; while desert steppe lost 0.06 Pg C, served as a carbon source. It appears that SOC storage in grassland ecosystem may respond differently to climate change, related to vegetation type, regional climate type and grazing intensity. These results might give advice to decision makers on adopting suitable countermeasures for sustainable grassland utilization and protection.
英文关键词	surface soil organic carbon storage climate change spatial differences grassland in Inner Mongolia
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5258444
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335402
作者单位	Dai Erfu, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Land Surface Pattern and Simulation, CAS, Beijing 100101, China.; Zhai Ruixue, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Land Surface Pattern and Simulation, CAS, Beijing 100101, China.; Ge Quansheng, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Land Surface Pattern and Simulation, CAS, Beijing 100101, China.; Wu Xiuqin, Beijing Forestry University, Beijing 100083, China.
推荐引用方式 GB/T 7714	Dai Erfu,Zhai Ruixue,Ge Quansheng,et al. Detecting the storage and change on topsoil organic carbon in grasslands of Inner Mongolia from 1980s to 2010s[J],2014,24(6):1035-1047.
APA	Dai Erfu,Zhai Ruixue,Ge Quansheng,&Wu Xiuqin.(2014).Detecting the storage and change on topsoil organic carbon in grasslands of Inner Mongolia from 1980s to 2010s.Journal of Geographical Sciences,24(6),1035-1047.
MLA	Dai Erfu,et al."Detecting the storage and change on topsoil organic carbon in grasslands of Inner Mongolia from 1980s to 2010s".Journal of Geographical Sciences 24.6(2014):1035-1047.