华北太行山前平原农田土壤养分的空间变异性研究

应用生态学报 ›› 2004, Vol. ›› Issue (11): 2049-2054.

华北太行山前平原农田土壤养分的空间变异性研究

张玉铭¹, 毛任钊¹, 胡春胜¹, 张佳宝², 朱安宁²

1. 中国科学院遗传与发育生物学研究所, 石家庄 050021;
2. 中国科学院南京土壤研究所, 南京 210008

收稿日期:2002-10-12 修回日期:2003-02-28
通讯作者: 张玉铭,女,1964年生,副研究员,主要从事农田生态系统养分循环及其环境效应方面的研究,发表论文多篇.E-mail:ymzhang@ms.sjziam.ac.cn.
基金资助:
中国科学院知识创新方向项目(KZCX24136,KZCX2405);国家重点基础研究发展规划资助项目(G1999011803)

Spatial variability of farmland soil nutrients at Taihang piedmont

ZHANG Yuming¹, MAO Renzhao¹, HU Chunsheng¹, ZHANG Jiabao², ZHU Anning ²

1. Institute of Genetics and Developmental Biology Chinese Academy of Sciences, Shijiazhuang 050021, China;
2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China

Received:2002-10-12 Revised:2003-02-28

摘要/Abstract

摘要： 采用地统计方法,分别对栾城县(面积约30 490 hm²)和中国科学院栾城生态农业试验站示范区(15 hm²)农田耕层土壤养分的空间变异特征进行了研究.结果表明,在2个不同采样间距下,各土壤养分含量均具有空间相关性,县域范围近似以1 km网格采样,最大相关距离为4.2～15.6km,在示范区以20 m网格采样,则为112～223 m;在同一采样间距下,土壤有机质、全氮、全磷、速效养分(N、P、K)含量的空间变异结构也各不相同,具有块金方差效应,半方差图分别遵从高斯和球函数模型.认识本区土壤的这种空间变异结构有助于实现对农田土壤养分的分区和合理管理.

关键词: 土壤养分, 空间变异性, 地统计学

Abstract: By the method of geostatistics,this paper studied the spatial variability of soil nutrients in 30 490 hm² crop field in Luancheng region and in 15 hm² experimental field in Luancheng Ecological Agriculture Station of Chinese Academy of Sciences.The results showed that the variation of soil nutrient contents differed obviously,and the semivariograms could be simulated by Gaussian and spherical models with some nugget variances.The limit distance of spatial correlation was 4.2～15.6 km and 112～223 m in Luancheng region and in experimental field,respectively,and the spatial variability of soil organic matter,N,P and K was of semivariance structure.It revealed that there existed a spatial correlation in soil nutrient contents under relatively large-block scale,which made it possible to develop regionalized soil nutrient precision management.

Key words: Soil nutrient, Spatial variability, Geostatistics

中图分类号:

S158.3

张玉铭, 毛任钊, 胡春胜, 张佳宝, 朱安宁. 华北太行山前平原农田土壤养分的空间变异性研究[J]. 应用生态学报, 2004, (11): 2049-2054.

ZHANG Yuming, MAO Renzhao, HU Chunsheng, ZHANG Jiabao, ZHU Anning . Spatial variability of farmland soil nutrients at Taihang piedmont[J]. Chinese Journal of Applied Ecology, 2004, (11): 2049-2054.

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