中南林业科技大学学报2025，Vol.45Issue(6)：136-146,11.DOI:10.14067/j.cnki.1673-923x.2025.06.014
荒漠绿洲过渡带土壤水分特征及其对气候因子的响应
Characterization of soil moisture and its response to climatic factors in the transition zone of a desert oasis
摘要
Abstract
[Objective]The soil water content of different land types in the typical desert-oasis transition zone of Hexi Corridor and Zhangye City,Gansu Province were taken as the research objects to clarify the dynamic changes of soil water content and its relationship with climatic factors,and to reveal the spatial heterogeneity,dynamic changes and the interaction between soil water content and climatic factors in this region,and to provide theoretical basis local ecological protection and desertification prevention and control.[Method]Through field sampling,indoor experiments,data analysis and processing,the changes of soil water content in the and saline-alkali areas of the desert-oasis transition zone in 0-20,20-40,40-60,60-80 cm soil layers were analyzed.The correlation between climatic factors and soil water content was analyzed by Pearson bivariate correlation analysis and the response degree of soil water content to climatic factors was analyzed by grey correlation method.[Result]1)The soil water content in the desert area generally low,with relatively high water content in the 0-20 cm soil layer,which decreased with the increase of depth;the soil water content in the-alkali area was generally high,with the water content increasing first and then decreasing with the increase of depth,and the water content in the 40-60 cm soil layer was the highest.The coefficient of variation of soil water content in different soil layers was at a low level of variation,indicating that its change was stable.The soil water content in the desert and saline-alkali areas showed different change trends in different months,with the highest water content in the 40-60 cm soil layer in the desert area and the lowest in the 60-80 cm soil layer;the highest water content in the saline-alk area was in the 40-60 cm or 60-80 cm soil layer,and the lowest was in the 0-20 cm layer;2)Soil water content was significantly positively correlated with precipitation and relative humidity,and negatively correlated with wind speed,evaporation and temperature to varying degrees.ipitation and relative humidity had a significant effect on soil water content in the desert area,and precipitation and evaporation had a prominent effect in the saline-alkali,and the grey correlation analysis further revealed the greater effect of relative humidity and precipitation on soil water content in different soil layers.[Conclusion]The soil water content the desert area was generally low,while that in the saline-alkali area was generally high.The soil water content of different land types showed different change trends in months,and there were differences among the soil layers,but the overall change was relatively stable.The distribution of soil water content was affected by seasonal precipitation,evaporation soil texture.关键词
荒漠绿洲过渡带/土壤水分/气候因子/相关性/张掖市Key words
desert-oasis transition zone/soil moisture/climatic factors/correlation/Zhangye City分类
农业科技引用本文复制引用
成彩霞,赵玉红,许尔文,赵明,苗银,兰晓东,王艺林,武龙庆,范强..荒漠绿洲过渡带土壤水分特征及其对气候因子的响应[J].中南林业科技大学学报,2025,45(6):136-146,11.基金项目
甘肃省自然科学基金项目(24JRRG033,25JRRG028) （24JRRG033,25JRRG028）
甘肃省林草科技计划项目(2020kj008,2022kj006,2018kj013) （2020kj008,2022kj006,2018kj013）
张掖市科技计划项目(ZY2024RC11) （ZY2024RC11）
全国荒漠化和沙化典型地区定位监测张掖站监测项目(2024年度). （2024年度）
