Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aaf9c7 |
Tracking the spatio-temporal change of cropping intensity in China during 2000-2015 | |
Yan, Huimin1; 39;en2 | |
2019-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
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. |
英文关键词 | cropland food security MODIS remote sensing |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000461665400002 |
WOS关键词 | AGRICULTURAL LAND-USE ; CLIMATE-CHANGE ; AREA ; POLICY ; CROPLANDS ; PATTERNS ; SYSTEMS ; PLATEAU ; INDIA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32099 |
专题 | 气候变化 |
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 |
推荐引用方式 GB/T 7714 | Yan, Huimin,39;en. Tracking the spatio-temporal change of cropping intensity in China during 2000-2015[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(3). |
APA | Yan, Huimin,&39;en.(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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