近30年中国水稻种植区域与产量时空变化分析(英文)

编号 zgly0001585346

文献类型 期刊论文

文献题名 近30年中国水稻种植区域与产量时空变化分析(英文)

作者 刘珍环  李正国  唐鹏钦  李志鹏  吴文斌  杨鹏  游良志  唐华俊 

作者单位 InstituteofAgriculturalResourcesandRegionalPlanning  ChineseAcademyofAgriculturalSciences/KeyLaboratoryofAgri-informatics  MinistryofAgriculture  EnvironmentandProductionTechnologyDivision  InternationalFoodPolicyResearchInstitute 

母体文献 Journal of Geographical Sciences 

年卷期 2013年06期

年份 2013 

分类号 F326.11  F224 

关键词 ricedistribution  spatialproductionallocationmodel  spatial-temporalchanges  China 

文摘内容 Rice’s spatial-temporal distributions,which are critical for agricultural,environmental and food security research,are affected by natural conditions as well as socio-economic developments. Based on multi-source data,an effective model named the Spatial Production Allocation Model(SPAM) which integrates arable land distribution,administrative unit statistics of crop data,agricultural irrigation data and crop suitability data,was used to get a series of spatial distributions of rice area and production with 10-km pixels at a national scale - it was applied from the early 1980s onwards and used to analyze the pattern of spatial and temporal changes. The results show that significant changes occurred in rice in China during 1980-2010. Overall,more than 50% of the rice area decreased,while nearly 70% of rice production increased in the change region during 1980-2010. Spatially,most of the increased area and production were in Northeast China,especially,in Jilin and Heilongjiang;most of the decreased area and production were located in Southeast China,especially,in regions of rapidly urbanization in Guangdong,Fujian and Zhejiang. Thus,the centroid of rice area was moved northeast approximately 230 km since 1980,and rice production about 320km,which means rice production moved northeastward faster than rice area because of the significant rice yield increase in Northeast China. The results also show that rice area change had a decisive impact on rice production change. About 54.5% of the increase in rice production is due to the expansion of sown area,while around 83.2% of the decrease in rice production is due to contraction of rice area. This implies that rice production increase may be due to area expansion and other non-area factors,but reduced rice production could largely be attributed to rice area decrease.