摘要
消落带土壤水分是制约植物生长发育的关键因素,对库区消落带生态修复意义重大。本文系统分析了乌东德库区消落带修复试验区土壤含水量分布,探索了土壤水分空间变化和影响因素。结果表明:研究区5月水分含量低于5%,不同试验分区和高程区域土壤水分分布受到微地形、土壤特征、植被类型和植被覆盖度等影响。土壤水分随深度变化的主控因素包括地表蒸发和植物吸水,剖面深度大于50 cm的土壤水分是消落带植物潜在利用水源之一。本研究为干热河谷库区消落带土壤水分研究积累了基础资料,为消落带生态修复提供理论参考。
The soil moisture in the water-level-fluctuating zone is a key factor for plants growth and development,and is vital to the ecological restoration of this zone.This paper systematically analyzed the spatial distribution and variation of soil water content in the restoration area of the Wudongde water-level-fluctuating zone and explored the influencing factors of the soil water charac⁃teristics.The results show that the soil water content is less than 5%in May,and its distribution at different test zones and eleva⁃tion areas is significantly affected by Micro-topography,soil characteristics,vegetation type and vegetation coverage.The main fac⁃tors controlling the moisture change with depth of soil profile are surface evaporation and water absorption by plants.The soil mois⁃ture at the profile depth greater than 50 cm was the potential water source for plants in the zone.This study provided fundamental data and theoretical references for ecological restoration in the water-level-fluctuating zone of the dry-hot valley reservoir area.
作者
金可
万丹
于江
张怡
刘文祥
胡月
赵姹
郭天雷
JIN Ke;WAN Dan;YU Jiang;ZHANG Yi;LIU Wenxiang;HU Yue;ZHAO Cha;GUO Tianlei(Chongqing Branch Institute,Changjiang River Scientific Research Institute,Chongqing 400026,China;Environmental Protection Department of China Three Gorges Construction Engineering Corporation,Chengdu,610023,China)
出处
《三峡生态环境监测》
2022年第1期26-33,共8页
Ecology and Environmental Monitoring of Three Gorges
基金
乌东德、白鹤滩水电站消落带修复试验项目合同(乌东德)(JG/19043B)
中央级公益性科研院所基本科研业务费项目(CKSF2019413/CQ,CKSF2021464/CQ)。
关键词
土壤水分
消落带
乌东德库区
干热河谷
soil water content
water-level-fluctuating zone
Wudongde reservoir
dry-hot valley
作者简介
金可(1990-),男,博士,主要从事水文地球化学和生态修复方面研究。E-mail:jin55669987@163.com。
