河南省土壤有效锌质量分数时空变异分析  

Spatial-temporal Variation of Mass Fraction of Soil Effective Zinc in Henan Province

作　　者：郭正磊 张少凯[1] 李玲[1] 杨素勤[1] 杜丽伟[1] 张宁[1] 董晶[1] 

机构地区：[1]河南农业大学资源与环境学院,郑州450002

出　　处：《中国农学通报》2015年第32期137-141,共5页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金项目"基于土壤分类的土壤剖面质量形成研究"(41201209);河南省教育厅科学技术研究重点项目"高潜水位平原区采煤塌陷地复垦土壤剖面生产力评价"(13A210495)

摘　　要：为了分析河南省土壤养分变化,为河南省土壤施肥提供参考,运用GIS与地统计学相结合的方法,通过对比分析1982、2009年2个不同时期河南省土壤有效锌的含量,探讨20多年以来河南省土壤有效锌时空变异的规律。结果表明:2009年河南省有效锌质量分数比1982年增加了41.67%,2个时期土壤有效锌变异系数分别为29.1%和37.3%,变异程度均为中等变异,最优拟合模型为球状模型,具有中等的空间相关性。20多年来,河南省土壤有效锌含量只有北部地区呈减少趋势,其余地区大体呈现出不同程度的增加趋势,其中漯河市、驻马店市、信阳市增幅较大,焦作市、开封市减少较多,在农作物施肥、土壤管理等过程中,应及时控制有效锌元素含量的合理范围。In order to analyze the soil nutrient change of Henan Province and provide reference for fertilizer application, spatial-temporal variation of mass fraction of soil effective zinc of 2 periods （1982 and 2009） were studied with the methods of GIS and geostatistics. The results showed that： the percentage of effective zinc in Henan Province increased by 41.67% from 1982 to 2009, the variable coefficient of effective zinc was 29.1% and 37.3%, respectively, in the two periods, which belonged to medium class; the optimal fitting model was spherical model, which had medium spatial correlation. For more than 20 years, the content of the effective zinc showed a decrease trend only in the north of Henan Province, and it showed an increase trend in different degrees in other regions, the growing rates of Luohe, Zhumadian and Xinyang were great, and the decreasing rates of Jiaozuo and Kaifeng were obvious. In the process of fertilizer application and soil management, the reasonable range of effective zinc should be controlled.

关 键 词：土壤 有效锌 时空变异 河南省 

分 类 号：S153.6[农业科学—土壤学]