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The impact of cultivated land spatial shift on food crop production in China, 1990-2010
Li, Yuanyuan1,2; Li, Xiubin1,2; Tan, Minghong1,3; Wang, Xue1; Xin, Liangjie1
2018-06-01
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Volume29Issue:6Pages:1652-1659
Corresponding AuthorTan, Minghong(tanmh@igsnrr.ac.cn)
AbstractCultivated land has been undergoing significant spatial shift during the last 2 decades in China, according to land-use data derived from the Landsat Thematic Mapper. Based on soil organic matter data and yield data at county level, we developed a constant crop yield dataset at pixel level with a resolution of 1 km. Using this dataset, this paper quantitatively evaluates average crop yield change due to cultivated land spatial shift at national and regional levels. The results show that (a) at national level, the average crop yield per unit area decreased by 1.99% during the period 1990-2010. The main reason for this is that built-up areas occupied a significant amount of high-yield cultivated land whereas low-yield land converted in ecologically vulnerable areas. (b) In spite of 77.2 thousand km(2) cultivated land was converted to built-up areas, especially in areas with high economic value, such as Huang-Huai-Hai Plain, 329.4 thousand km(2) land was converted to cultivated land, especially in Northeastern and Northwestern China. (c) The quality gap between cultivated land converted to built-up areas nationally and new cultivated land regionally suggests that the loss of 1 km(2) of cultivated land converted to built-up area would, to achieve equivalency, need to be compensated by 1.54 km(2) of new land in Xinjiang, or more in Northeastern China. However, cultivated land expansion in these areas may cause land degradation and a series of ecological environment problems.
KeywordChina crop yield cultivated land soil organic matter (SOM) spatial shift
DOI10.1002/ldr.2929
WOS KeywordSOIL PROPERTIES ; ORGANIC-MATTER ; RIVER DELTA ; ARABLE LAND ; EXPANSION ; FARMLAND ; PATTERNS ; QUALITY ; YIELD ; ENVIRONMENT
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences ; Pan-Third Pole Environment Study for a Green Silk Road (PanTPE)[XDA20040400] ; National Natural Science Foundation of China[41771116]
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Pan-Third Pole Environment Study for a Green Silk Road (PanTPE) ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000435278900011
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54697
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTan, Minghong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, 19A Yuquan Rd, Beijing 10049, Peoples R China
3.Univ Chinese Acad Sci, Int Coll, 19A Yuquan Rd, Beijing 10049, Peoples R China
Recommended Citation
GB/T 7714
Li, Yuanyuan,Li, Xiubin,Tan, Minghong,et al. The impact of cultivated land spatial shift on food crop production in China, 1990-2010[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(6):1652-1659.
APA Li, Yuanyuan,Li, Xiubin,Tan, Minghong,Wang, Xue,&Xin, Liangjie.(2018).The impact of cultivated land spatial shift on food crop production in China, 1990-2010.LAND DEGRADATION & DEVELOPMENT,29(6),1652-1659.
MLA Li, Yuanyuan,et al."The impact of cultivated land spatial shift on food crop production in China, 1990-2010".LAND DEGRADATION & DEVELOPMENT 29.6(2018):1652-1659.
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