globalchange  > 气候变化事实与影响
DOI: 10.1088/1748-9326/aaf9c7
WOS记录号: WOS:000461665400002
论文题名:
Tracking the spatio-temporal change of cropping intensity in China during 2000-2015
作者: Yan, Huimin1,2; Liu, Fang1; Qin, Yuanwei3; Niu, Zhong'; en1,2; Doughty, Russell3; Xiao, Xiangming3,4
通讯作者: Liu, Fang
刊名: ENVIRONMENTAL RESEARCH LETTERS
ISSN: 1748-9326
出版年: 2019
卷: 14, 期:3
语种: 英语
英文关键词: cropland ; food security ; MODIS ; remote sensing
WOS关键词: AGRICULTURAL LAND-USE ; CLIMATE-CHANGE ; AREA ; POLICY ; CROPLANDS ; PATTERNS ; SYSTEMS ; PLATEAU ; INDIA
WOS学科分类: Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向: Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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 MODO9A1 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 X 10(6)km(2) and 0.52 +/- 0.027 X 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 x 10(6)km(2) of single-cropping area was converted to doublecropping area, which mainly occurred in the Huang-Huai-Hai Region. About 0.193 +/- 0.028 x 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.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/131069
Appears in Collections:气候变化事实与影响

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作者单位: 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Oklahoma, Ctr Spatial Anal, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
4.Fudan Univ, Inst Biodivers Sci, Shanghai 200433, Peoples R China

Recommended Citation:
Yan, Huimin,Liu, Fang,Qin, Yuanwei,et al. Tracking the spatio-temporal change of cropping intensity in China during 2000-2015[J]. ENVIRONMENTAL RESEARCH LETTERS,2019-01-01,14(3)
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