Spatial Variability of Soil Properties in Erhai Lake Buffer Belt

ZHANG Wentao; XING Yi; LU Shaoyong; ZHAO Bin; XUE Wei

doi:10.13961/j.cnki.stbctb.2015.02.028

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Spatial Variability of Soil Properties in Erhai Lake Buffer Belt

- Spatial Variability of Soil Properties in Erhai Lake Buffer Belt
- Bulletin of Soiland Water Conservation Vol. 35, Issue 2, Pages: 147-150(2015)
- 作者机构：
  
  1. 北京科技大学土木与环境工程学院,北京,100083
  2. 中国环境科学研究院环境基准与风险评估国家重点实验室国家环境保护湖泊污染控制重点实验室湖泊环境研究中心洞庭湖生态观测研究站湖泊工程技术中心,北京,100012
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.02.028
  CLC：
- Published：2015
- 稿件说明：
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ZHANG Wentao, XING Yi, LU Shaoyong, et al. Spatial Variability of Soil Properties in Erhai Lake Buffer Belt[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 147-150.
DOI：

ZHANG Wentao, XING Yi, LU Shaoyong, et al. Spatial Variability of Soil Properties in Erhai Lake Buffer Belt[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 147-150. DOI： 10.13961/j.cnki.stbctb.2015.02.028.

摘要

[目的] 了解洱海缓冲带内土壤特性空间分布状况

进而为缓冲带面源污染治理、精细农业与植被布局等提供参考。[方法] 采集80个缓冲带表层土壤样品

测定其含水率、有机质、全磷、全氮、氨氮和硝氮的含量

并应用传统统计学和地统计学方法对数据进行分析。[结果] (1)土壤中含水率、有机质、全磷、全氮、氨氮和硝氮各项统计特性均通过K-S检验

呈正态分布;(2)洱海缓冲带土壤中养分水平较高;氨氮和硝氮的变异系数大于100%

属强变异性;(3)有机质南部略低

东西向呈东西高

中部低

全氮、全磷南北向呈南北低

中部高

东西向变化不大;(4)有机质表现出强烈的空间相关性

而全氮和全磷空间相关性弱。[结论] 缓冲带农田格局和迁移转化是影响土壤特性空间分布的两个重要因素。

Abstract

[Objective] In order to study the spatial variability of soil properties in the buffer belt of Erhai Lake

and then provide reference for controlling non-point source pollution and pricision agricultural planning and layout.[Methods] 80 soil samples in the buffer belt of Erhai Lake were collected. Soil moisture

total soil organic matter

total nitrogen

total phosphorus

ammonia nitrogen and nitrate nitrogen were measured. The spatial distribution patterns of soil parameters were analyzed by using traditional statistical and geo-statistical methods.[Results] (1) All statistical characteristics passed through the K-S test and thus indicated normal distribution; (2) The nutrient contents in the soil were high. The coefficient of variation of ammonia nitrogen and nitrate nitrogen were higher than 100%

indicating a strong variability;. (3) Soil organic matter in south was slightly lower than that in north. In east-west direction

organic matter in the east and west was higher than that in the middle. By contrast

the content of total nitrogen and total phosphorus in south and north was lower than that in the middle; (4) Total soil organic matter showed a strong spatial correlation

whereas total nitrogen and total phosphorus showed weak spatial correlations.[Conclusion] Farmland layout and the migration and conversion of the buffer zone were two important factors affecting the spatial variability of soil properties.

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