The application of GIS techniques in soil testing and fertilizer recommendations: Part III The distribution of soil organic matters in Hainan, China
文献类型: 外文期刊
作者: Wei, Zhiyuan 1 ; Qi, Zhiping 1 ;
作者机构: 1.Chinese Acad Trop Agr Sci, Minist Agr, Trop Crops Genet Resources Inst, Danzhou 571737, Peoples R China
关键词: GIS;Soil test;Fertilizer recommendation;Organic matters;Hainan
期刊名称:PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-4
ISSN: 1022-6680
年卷期: 2013 年 610-613 卷
页码:
收录情况: SCI
摘要: There are more and more concerns of researchers on the spatial distribution of organic carbons. Accurate estimate of organic carbon stock of arable land soil is significant to cutting down release of carbons. The study, taking Hainan arable land as the study case, has analyzed the distribution and variation characteristics of organic matters content of arable land soils in this area by applying GIS spatial analysis. The results indicate that for nearly three decades, the contents of soil organic matters decreased significantly in Hainan, and the effective measures should be taken to increase the contents of soil organic matters, i.e. increase application ratios of organic fertilizers. GIS raster calculation can identify the areas, of which the soil organic matters changed most significantly during the two periods.
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