吉林省公主岭地区土壤主要养分指标的时空变异特征  

The Spatio-temporal Variability of Soil Nutrients in Gongzhuling of Jilin Province

作　　者：隋鹏飞[1] 郝晋珉[1] 李双异[2] 汪景宽[2] 朱平[3] 

机构地区：[1]中国农业大学,北京100094 [2]沈阳农业大学,辽宁沈阳110161 [3]吉林省农业科学院,吉林公主岭136100

出　　处：《土壤通报》2006年第1期7-12,共6页Chinese Journal of Soil Science

基　　金：国家重点基础研究发展规划项目(2005CB121100-G;G1999011810);黑龙江省自然科学基金重点项目(ZJN03-02)

摘　　要：运用地理信息系统和地统计学相结合的方法研究了20年来吉林省公主岭地区土壤主要养分指标—有机质、速效氮、速效磷、速效钾的时空变异规律。结果表明,20年来除了速效磷含量增加外,有机质、速效氮、速效钾含量都有所降低。2000年速效磷的变异最大,其次是有机质、速效钾、速效氮;1980年变异最大的是速效磷,其次是速效氮、速效钾、有机质。这主要是人为管理及施肥差异造成的。Geographical information system （GIS） combined with, Geostatistics was applied to reveal the spatio-temporal variability of soil nutrients i. e. , organic matter,available N available P and available K in Gongzhuling area of Jilin province during twenty years. The results showed that the average content of organic matter, available N available K decreased except for available P. The great difference of nutrients is available P and the less differences are organic matter, available K and available N in 2000. The great difference was available P; the less differences were available N, available K and organic matter in 1980. The reason was mainly contributed to the application of fertilizers and the people management.

关 键 词：地统计学 地理信息系统 土壤养分 时空变异 

分 类 号：S158[农业科学—土壤学]