干旱区生态环境知识资源中心(Arid): Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia

Arid

	Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia
	Zhao Wei; Hu Zhongmin; Li Shenggong; Guo Qun; Yang Hao; Zhang Tonghui
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2017
卷号	27 期号:8 页码:999-1010
英文摘要	Soil organic carbon (SOC) stocks in terrestrial ecosystems vary considerably with land use types. Grassland, forest, and cropland coexist in the agro-pastoral ecotone of Inner Mongolia, China. Using SOC data compiled from literature and field investigations, this study compared SOC stocks and their vertical distributions among three types of ecosystems. The results indicate that grassland had the largest SOC stock, which was 1.5-and 1.8-folds more than stocks in forest and cropland, respectively. Relative to the stock in 0-100 cm depth, grassland held more than 40% of its SOC stock in the upper 20 cm soil layer; forest and cropland both held over 30% of their respective SOC stocks in the upper 20 cm soil layer. SOC stocks in grazed grasslands were remarkably promoted after >20 years of grazing exclusion. Conservational cultivation substantially increased the SOC stocks in cropland, especially in the 0-40 cm depth. Stand ages, tree species, and forest types did not have obvious impacts on forest SOC stocks in the study area likely due to the younger stand ages. Our study implies that soil carbon loss should be taken into account during the implementation of ecological projects, such as reclamation and afforestation, in the arid and semi-arid regions of China.
英文关键词	soil organic carbon soil carbon profile land use change grazing tillage forest age
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:5958233
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335780
作者单位	Zhao Wei, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China.; Hu Zhongmin, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China.; Li Shenggong, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China.; Guo Qun, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China.; Yang Hao, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Ecosystem Network Observation and Modeling, CAS, Beijing 100101, China.; Zhang Tonghui, Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Zhao Wei,Hu Zhongmin,Li Shenggong,et al. Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia[J],2017,27(8):999-1010.
APA	Zhao Wei,Hu Zhongmin,Li Shenggong,Guo Qun,Yang Hao,&Zhang Tonghui.(2017).Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia.Journal of Geographical Sciences,27(8),999-1010.
MLA	Zhao Wei,et al."Impact of land use conversion on soil organic carbon stocks in an agro-pastoral ecotone of Inner Mongolia".Journal of Geographical Sciences 27.8(2017):999-1010.