森林与环境学报2024，Vol.44Issue(4)：367-375,9.DOI:10.13324/j.cnki.jfcf.2024.04.004
地形对高寒草地土壤水文特征的影响
Effects of terrain on soil hydrological characteristics of alpine grasslands
摘要
Abstract
To make more rational use of water resources and effectively protect and restore vegetation in alpine regions,alpine grasslands under different terrains (slope aspect and position) were selected as research objects in the Liancheng National Nature Reserve of Gansu Province. The variations in soil hydrological characteristics in the 0-30 cm soil layer of alpine grasslands under the different terrains (slope aspect and slope position) were investigated. The results showed that with an increase in soil depth,the soil water content of the alpine grasslands decreased,and the soil bulk density increased under different terrain conditions. The soil water content of the shady slope was higher than that of the sunny slope,whereas the opposite was true for soil bulk density. The soil water content and soil bulk density on the lower slope were higher than those on the upper slope. Total soil porosity,capillary porosity,and non-capillary porosity showed that the shady slope was larger than the sunny slope,and the upper part of the slope was larger than the lower part of the slope. The results showed that the upper part of the shady slope was the highest. The soil water-holding capacity in different slope directions and positions was as follows:shady slope>sunny slope and upper slope>middle slope>lower slope. The initial infiltration rate (0.47-5.90 mm·min-1) was higher than the stable infiltration rate (0.08-1.36 mm·min-1) and average infiltration rate (0.09-1.54 mm·min-1). The soil permeability of alpine grasslands on different terrains was as follows:sunny slope>shady slope and upper slope>middle slope>lower slope. The terrain (slope aspect and position) of the alpine grasslands has a significant impact on the soil hydrological characteristics. Therefore,the relationship between terrain and soil hydrological characteristics should be fully considered during the ecological protection,restoration,and sustainable development of alpine grassland ecosystems in the Liancheng National Nature Reserve of Gansu Province.关键词
土壤水文特征/高寒草地/地形/坡向/坡位/甘肃连城国家级自然保护区Key words
soil hydrological characteristics/alpine grassland/terrain/slope aspect/slope position/Gansu Liancheng National Nature Reserve分类
农业科技引用本文复制引用
梁秦杨,付殿霞,赵锦梅,王子心,王兴怡,李小刚..地形对高寒草地土壤水文特征的影响[J].森林与环境学报,2024,44(4):367-375,9.基金项目
国家自然科学基金项目"祁连山东段高寒草地生态系统及其土壤水碳格局对灌丛化的响应与互馈机制"(32360378) （32360378）
甘肃省教育厅产业支撑计划项目"祁连山寒温性针叶林土壤水、碳耦合关系及其生态服务功能分析与评价系统研发"(2023CYZC-45) （2023CYZC-45）
甘肃连城国家级自然保护区管理局项目"甘肃连城国家级自然保护区不同植被类型土壤有机碳分布格局研究". （）
