The application of GIS techniques in soil testing and fertilizer recommendations: Part II The distribution of soil nutrients in Hainan, China
文献类型: 外文期刊
作者: Wei, Zhiyuan 1 ; Wang, Dengfeng 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;Nutrient;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: The research on the distribution of soil nutrient contents in arable land regionally is the basis for the proper fertilization. The study, taking Hainan Island as the study area, analyzes the distribution and variation of soil nutrient contents in arable land spatially and temporally by applying GIS spatial analysis. As the study shows, from the 1980s to the year of 2005, the TN, TP, TK, and Available N contents in soil of arable land have declined to certain degree, while Available P and Available K kept increasing. Generally, the soil nutrients have declined in quality during last two decades but remain in a mediate level. Spatial analysis can reflect the distribution characteristics of the regional soil nutrient elements in an objective manner.
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