Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures

TIAN Zhuo; ZHANG Shuaipu; XU Qinxue

doi:10.13870/j.cnki.stbcxb.2024.04.027

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Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures

更新时间：2025-03-12

- Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures
- Vol. 38, Issue 4, Pages: 335-345(2024)
- 作者机构：
  
  1. 河海大学农业科学与工程学院,南京,210098
  2. 桂林理工大学广西环境污染控制理论与技术重点实验室,广西,桂林,541004
  3. 桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心,广西,桂林,541004
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2024.04.027
  CLC： S152.7
- Published：2024
- 稿件说明：
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TIAN Zhuo, ZHANG Shuaipu, XU Qinxue. Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures[J]. 2024, 38(4): 335-345.
DOI：

TIAN Zhuo, ZHANG Shuaipu, XU Qinxue. Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures[J]. 2024, 38(4): 335-345. DOI： 10.13870/j.cnki.stbcxb.2024.04.027.

摘要

[目的] 分析石漠化坡地不同整地措施下表层土壤水分的空间分布特征

为提高石漠化坡地的水资源利用效率和农业管理水平提供参考依据。[方法] 以石漠化坡地中反坡、斜坡和平地3种整地措施下的柑橘林地为研究对象

采用经典统计学、地统计学和多重分形理论研究土壤水分的空间分布特征。[结果] (1)反坡的土壤含水量显著高于平地和斜坡(p＜0.05)

平地土壤含水量的空间连续性和聚集性以及总变异和结构性变异强于斜坡和反坡。(2)不同整地措施下的土壤含水量均具有中等强度变异性(10.00%≤CV≤100.00%)、强空间自相关性[C0/(C0+C)≤0.25]和极显著(p＜0.01)的空间聚集性。(3)不同整地措施下的土壤含水量分布具有多重分形特征

旱季时反坡的土壤含水量分布区间最窄

斜坡的土壤含水量分布更离散;雨季时平地的土壤含水量分布区间最窄

反坡的土壤含水量更不均匀。[结论] 土壤机械组成是影响土壤含水量的主要因素

反坡整地措施更有利于改善石漠化坡地的土壤水分条件。

Abstract

[Objective] The objective of this study was to analyze the spatial distribution characteristics of surface soil moisture content in the rocky desertification slope under different land preparation measures and to provide references for improving water resources utilization efficiency and agricultural management level on rocky desertification slopes. [Methods] The citrus forest under three land preparation measures of reverse slope

flat terrace

and natural slope on rocky desertification slope were chosen as the research objects. Classical statistics

geostatistics and multifractal theory were used to analyze the spatial distribution characteristics of soil moisture content. [Results] (1) The soil moisture content of the reverse slope was significantly higher than that of the flat terrace and the natural slope (p<0.05). The spatial continuity

aggregation

total and structural variability of soil moisture content on the flat terrace were stronger than those on the reverse slope and the natural slope. (2) The soil moisture content of different land preparation measures showed moderate variability (10.00%≤CV≤100.00%)

strong spatial autocorrelation [C0/(C0+C)≤0.25]

and extremely significant (p<0.01) spatial aggregation. (3) The distribution of soil moisture content under different land preparation measures has multi-fractal characteristics. During the dry season

the distribution range of soil moisture content was narrowest on the reverse slope

and more discrete on the natural slope. During the rainy season

the distribution range of soil moisture content was narrowest on the flat terrace

and more uneven on the reverse slope. [Conclusion] Soil mechanical composition was the main factor that affected soil moisture content

and the reverse slope was more conducive to improved soil moisture conditions on rocky desertification slopes.

关键词

Keywords

references

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