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生态学杂志 ›› 2003, Vol. ›› Issue (4): 6-9.

• 研究报告 • 上一篇    下一篇

沈阳市郊耕地土壤交换性Ca含量的空间异质性特征

刘丹1,2, 姜勇1, 梁文举1, 闻大中1, 张玉革3, 乔德波3   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;
    2. 辽宁省农业综合开发办公室, 沈阳, 110013;
    3. 沈阳农业大学土地与环境学院, 沈阳, 110161
  • 收稿日期:2002-09-10 修回日期:2002-12-03 出版日期:2003-04-10
  • 通讯作者: 姜勇
  • 基金资助:
    国家高技术研究发展计划重大项目(2001AA246021);中国科学院沈阳生态实验站基金资助项目(K09SDSYZ0204)

Spatial heterogeneity of exchangeable calcium content in cultivated soils of Shenyang Suburbs

LIU Dan1,2, JIANG Yong1, LIANG Wenju1, WEN Dazhong1, ZHANG Yuge3, QIAO Debo 3   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 11001. 6, China;
    2. Integrated Agricultural Development Office of Liaoning Province, Shenyang 11001. 3, China;
    3. College of Land and Environment, Shenyang Agricultural University, Shenyang 110161. , China
  • Received:2002-09-10 Revised:2002-12-03 Online:2003-04-10

摘要: 利用地统计学和地理信息系统相结合的方法研究了沈阳市郊耕地土壤(0~20cm)交换性钙含量的空间异质性特征,绘制了交换性钙含量的空间分布图。结果表明,土壤交换性钙含量经对数转换后基本符合正态分布,变异函数的最佳理论模型为球状模型,交换性钙含量具有很强的空间相关性,空间自相关距离为 15.8km,其空间异质性主要受成土母质和土壤类型等结构性因子的影响.

关键词: 小波变换, 杂古脑, 径流时间序列, 尺度

Abstract: The spatial heterogeneity of exchangeable calcium content in 0~20cm horizon in cultivated soils of Shenyang suburbs, Liaoning of China, was investigated, and its map was made by the methods of geostatistics and geographic information system. Data of exchangeable Ca fitted normal distribution after log transformation, and semivariogram fitted a spherical model. Semivariograms indicated that exchangeable Ca content was strongly spatially dependent on the ratio of nugget to sill of 11.7%, its spatially dependent range was 15.8km, and its spatial heterogeneity was fundamentally affected by structural factors such as parent materials and soil types.

Key words: Wavelet transform, Zagunao watershed, Runoff time serial, Scale

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