气候变化领域集成服务门户(CCPortal): Tracking the spatio-temporal change of cropping intensity in China during 2000-2015

CCPortal

DOI	10.1088/1748-9326/aaf9c7
	Tracking the spatio-temporal change of cropping intensity in China during 2000-2015
	Yan H.; Liu F.; Qin Y.; Niu Z.; Doughty R.; Xiao X.
发表日期	2019
ISSN	17489318
卷号	14 期号:3
英文摘要	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 < 0.05). The landscapes of different cropping systems tended to be homogenized in major agricultural production regions. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	cropland; food security; MODIS; remote sensing
语种	英语
scopus关键词	Food supply; Remote sensing; Agricultural productions; cropland; Food security; Middle and lower reaches of the yangtze rivers; MODIS; Multiple cropping systems; Spatio-temporal dynamics; Sustainable agricultural development; Agriculture; agricultural development; agricultural land; alternative agriculture; cropping practice; food security; MODIS; remote sensing; spatiotemporal analysis; time series analysis; tracking; China; Pacific Ocean; Yangtze River; Yellow Sea
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154667
作者单位	Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, OK 73019, United States; Institute of Biodiversity Science, Fudan University, Shanghai, 200433, China
推荐引用方式 GB/T 7714	Yan H.,Liu F.,Qin Y.,et al. Tracking the spatio-temporal change of cropping intensity in China during 2000-2015[J],2019,14(3).
APA	Yan H.,Liu F.,Qin Y.,Niu Z.,Doughty R.,&Xiao X..(2019).Tracking the spatio-temporal change of cropping intensity in China during 2000-2015.Environmental Research Letters,14(3).
MLA	Yan H.,et al."Tracking the spatio-temporal change of cropping intensity in China during 2000-2015".Environmental Research Letters 14.3(2019).