基于GIS的农田土壤、作物特征空间变异性及其相互关系

应用生态学报 ›› 2004, Vol. ›› Issue (9): 1678-1680.

基于GIS的农田土壤、作物特征空间变异性及其相互关系

陈蓉蓉, 周治国, 曹卫星, 戴廷波

南京农业大学, 江苏省信息农业高技术研究重点实验室, 南京 210095

收稿日期:2003-06-03 修回日期:2004-02-16
通讯作者: 曹卫星,E-mail:caow@njau.edu.cn
基金资助:
国家自然科学基金重点项目(30030090);国家“863”计划资助项目(2003AA209030)

Spatial variability and quantitative analysis of field factors based on GIS

CHEN Rongrong, ZHOU Zhiguo, CAO Weixing, DAI Tingbo

Hi-Tech Key Laboratory of Information Agriculture, Jiangsu Province, Nanjing Agricultural University, Nanjing 210095, China

Received:2003-06-03 Revised:2004-02-16

摘要/Abstract

Abstract: The objective of this research was to investigate the variability and the quantitative relationships among soil nutrients and crop growth status and yield.All data were analyzed by both classical statistics and geostatistics based on GIS.Soil properties included soil pH,total N,organic matter,available P and available K,while crop growth status was indicated by SPAD,LAI and SPAD譒AI.All parameters except soil pH exhibited spatial correlation.Soil total N and organic matter,SPAD,LAI and SPAD譒AI were all correlated to rice yield.Kriged interpolation maps provided good indication of the spatial variability in crop yield and growth status.Spatial interpolation and correlation analysis proved that SPAD譒AI was more indicative of crop growth status than individual variables,and useful for implementing growth season and topdressing as needed.

Key words: GIS, Field information, Spatial variblity, Quantitative relationship

中图分类号:

S315

陈蓉蓉, 周治国, 曹卫星, 戴廷波. 基于GIS的农田土壤、作物特征空间变异性及其相互关系[J]. 应用生态学报, 2004, (9): 1678-1680.

CHEN Rongrong, ZHOU Zhiguo, CAO Weixing, DAI Tingbo. Spatial variability and quantitative analysis of field factors based on GIS[J]. Chinese Journal of Applied Ecology, 2004, (9): 1678-1680.

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