水土保持学报2024，Vol.38Issue(4)：335-345,11.DOI:10.13870/j.cnki.stbcxb.2024.04.027
石漠化坡地不同整地措施下表层土壤水分空间分布特征
Spatial Distribution Characteristics of Surface Soil Moisture Content in the Rocky Desertification Slope Under Different Land Preparation Measures
摘要
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
石漠化坡地/整地措施/土壤水分/空间分布Key words
rocky desertification slope/land preparation measure/soil moisture/spatial distribution分类
农业科技引用本文复制引用
田卓,张帅普,徐勤学..石漠化坡地不同整地措施下表层土壤水分空间分布特征[J].水土保持学报,2024,38(4):335-345,11.基金项目
国家自然科学基金项目(42267045) （42267045）
广西重点研发计划项目(桂科AB22035058) （桂科AB22035058）
