Tracking the spatio-temporal change of cropping intensity in China during 2000–2015

Bibliographic Data

ID15545369
AuthorsHuimin Yan (0000-0003-0678-0397, Institute of Geographic Sciences and Natural Resources Research), Fang Liu (0000-0002-7132-354X, Institute of Geographic Sciences and Natural Resources Research, corresponding author), Yuanwei Qin (0000-0002-5181-9986, University of Oklahoma), Zhongen Niu (0000-0002-1743-875X, Institute of Geographic Sciences and Natural Resources Research), Zhong’en Niu, Russell Doughty (0000-0001-5191-2155, University of Oklahoma), Xiangming Xiao (0000-0003-0956-7428, University of Oklahoma)
Year2018
Volume14
Issue3
Pages035008-035008
Publication date2018-12-19
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueEnvironmental Research Letters (JOURNAL)
Journal identifiersISSN: 1748-9326 • E-ISSN: 1748-9326
PublisherIOP Publishing (PUBLISHER • GB)
DOI10.1088/1748-9326/aaf9c7
OpenAlexW2904108849
LanguageEN
Citations received8
References cited49

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 × 10 ^6 km ^2 and 0.52 ± 0.027 × 10 ^6 km ^2 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 × 10 ^6 km ^2 of single-cropping area was converted to double-cropping area, which mainly occurred in the Huang-Huai-Hai Region. About 0.193 ± 0.028 × 10 ^6 km ^2 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

Agriculture · China · Cropping · Cropping system · Geography · Intensity (physics · Multiple cropping · Physical geography · Climate change impacts on agriculture · Environmental Science · Land Use and Ecosystem Services · Remote Sensing in Agriculture

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