干旱区生态环境知识资源中心(Arid): The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia

Arid

	The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia
	Gao Tian; Xu Bin; Yang Xiuchun; Jin Yunxiang; Ma Hailong; Li Jinya; Yu Haida
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2013
卷号	5 期号:3 页码:339-346
英文摘要	A precise understanding of the aboveground biomass of desert steppe and its spatio-temporal variation is important to understand how arid ecosystems respond to climate change and to ensure that scarce grassland resources are used rationally. On the basis of 756 ground survey quadrats sampled in western Inner Mongolia steppe in 2005-2011 and remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS)the normalized difference vegetation index (NDVI) dataset for the period of 2001-2011we developed a statistical model to estimate the aboveground biomass of the desert steppe and further explored the relationships between aboveground biomass and climate factors. The conclusions are as follows: (1) the aboveground biomass of the steppe in the research area was 5.27 Tg (1 Tg=10~(12) g) on average over 11 years; between 2001 and 2011, the aboveground biomass of the western Inner Mongolia steppe exhibited fluctuations, with no significant trend over time; (2) the aboveground biomass of the steppe in the research area exhibits distinct spatial variation and generally decreases gradually from southeast to northwest; and (3) the important factor causing interannual variations in aboveground biomass is precipitation during the period from January to July, but we did not find a significant relationship between the aboveground biomass and the corresponding temperature changes. The precipitation in this period is also an important factor influencing the spatial distribution of aboveground biomass (R~2=0.39, P<0.001), while the temperature might be a minor factor (R~2=0.12, P<0.01). The uncertainties in our estimate are primarily due to uncertainty in converting the fresh grass yield estimates to dry weight, underestimates of the biomass of shrubs, and error in remote sensing dataset
英文关键词	Inner Mongolia desert steppe normalized difference vegetation index (NDVI) aboveground biomass climate factors
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:4906339
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335234
作者单位	Gao Tian, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100081, China.; Xu Bin, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100081, China.; Yang Xiuchun, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100081, China.; Jin Yunxiang, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100081, China.; Ma Hailong, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100081, China.; Li Jinya, Institute of Agricultu...
推荐引用方式 GB/T 7714	Gao Tian,Xu Bin,Yang Xiuchun,et al. The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia[J],2013,5(3):339-346.
APA	Gao Tian.,Xu Bin.,Yang Xiuchun.,Jin Yunxiang.,Ma Hailong.,...&Yu Haida.(2013).The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia.Sciences in Cold and Arid Regions,5(3),339-346.
MLA	Gao Tian,et al."The aboveground biomass of desert steppe and its spatiotemporal variation in western Inner Mongolia".Sciences in Cold and Arid Regions 5.3(2013):339-346.