基于GIS的土壤养分空间变异状况研究  

A Study on Spatial Variability of Soil Nutrients Based on GIS

作　　者：赵月玲[1] 陈桂芬[2] 王越[2] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118 [2]吉林农业大学信息与技术学院,吉林长春130118

出　　处：《西北农业学报》2005年第6期195-198,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家863项目基金资助(2003AA209090)

摘　　要：运用地理信息系统(GIS)软件结合地统计学理论知识,对吉林省榆树市弓棚镇十三号村的2块农用田土壤(0-20 cm)的239个土样进行样品化验分析,结果表明土壤肥力状况属中等偏上的水平。同时应用GIS 的空间分析技术对其进行空间异质分析研究,建立土壤有机质,速效磷,含水量等养分含量的空间分布图,对2 块地的土壤养分状况进行比较,分析其空间分布的规律。探明其主要影响因素是速效养分在土壤中的移动性的大小。The soil nutrient status and their spatial variability in 0-20 cm soil layer of the thirteenth village of Gongpeng town, Yushu city,Jilin province were studied by application of geographic information system (GIS) and geostatistics knowledge. After the 239 soil samples were tested, the results showed that state of soil is better. It is also showed that there existed spatial variability of soil nutrients. The maps based on the spatial variability of soil OM ,available P and water content were designed and the spatial variability rules were designed by the application of GIS technology. The conclusion that different spatial variability of available nutrients was deeply affected by their mobility was got easily. The results would become a means of guiding farmer fertilization and be valuable in precision agriculture.

关 键 词：土壤养分 空间变异 地理信息系统 

分 类 号：S158[农业科学—土壤学]