Tracking the spatio-temporal change of cropping intensity in China during 2000–2015
Yan,Huimin1,2; Liu,Fang1; Qin,Yuanwei3; Niu,Zhong’en1,2; Doughty,Russell3; Xiao,Xiangming3,4
Source PublicationEnvironmental Research Letters
AbstractAbstract Improvement in the efficiency of farmland utilization and multiple cropping systems are of prime importance for achieving food security in China. Therefore, spatially-explicit analysis detecting trends of cropping intensity are important preconditions for sustainable agricultural development. However, knowledge about the spatiotemporal dynamics of cropping intensity in China remains limited. In this study, we generated annual cropping intensity maps in China during 2000–2015 using a rule-based algorithm and MOD09A1 time series imagery. We then analyzed the spatio-temporal changes of cropping intensity. The results showed single-cropping and double-cropping areas were about 1.28?±?0.027?×?106 km2 and 0.52?±?0.027?×?106 km2 in China in 2015 and their areas were relatively stable from 2000–2015. However, cropping intensity had substantial spatial changes during 2000–2015. About 0.164?±?0.026?×?106 km2 of single-cropping area was converted to double-cropping area, which mainly occurred in the Huang-Huai-Hai Region. About 0.193?±?0.028?×?106 km2 of double-cropping area was converted to single-cropping area, which mainly occurred in the southern part of China. About 85% of croplands with decreases in cropping intensity were located in the southern part of China, and about 80% of croplands with increases in cropping intensity was distributed in the Huang-Huai-Hai Region and the northern part of the Middle and Lower Reaches of the Yangtze River region (p?
Keywordcropland food security MODIS remote sensing
WOS IDIOP:1748-9326-14-3-aaf9c7
PublisherIOP Publishing
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Document Type期刊论文
Affiliation1.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3.Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, OK 73019, United States of America
4.Institute of Biodiversity Science, Fudan University, Shanghai 200433, People’s Republic of China
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GB/T 7714
Yan,Huimin,Liu,Fang,Qin,Yuanwei,等. Tracking the spatio-temporal change of cropping intensity in China during 2000–2015[J]. Environmental Research Letters,2019,14(3).
APA Yan,Huimin,Liu,Fang,Qin,Yuanwei,Niu,Zhong’en,Doughty,Russell,&Xiao,Xiangming.(2019).Tracking the spatio-temporal change of cropping intensity in China during 2000–2015.Environmental Research Letters,14(3).
MLA Yan,Huimin,et al."Tracking the spatio-temporal change of cropping intensity in China during 2000–2015".Environmental Research Letters 14.3(2019).
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