江西武夷山国家级自然保护区典型林地类型土壤水力特性差异及土壤水分调控效应模拟  

Soil Hydraulic Characteristics Difference of Typical Forest Land Types and Simulation of Soil Water Regulation Effect in Jiangxi Wuyishan National Nature Reserve

作　　者：徐燕星 刘昭 涂安国 雷平 胡皓 赵佳鼎 石芬芬 XU Yanxing;LIU Zhao;TU Anguo;LEI Ping;HU Hao;ZHAO Jiading;SHI Fenfen(Jiangxi Water Resources Institute,330013,Nanchang,PRC;Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention,Jiangxi Academy of Water Sciences and Engineering,330029,Nanchang,PRC;Jiangxi Wuyishan Nature Reserve Administration,334500,Shangrao,Jiangxi,PRC)

机构地区：[1]江西水利职业学院,南昌330013 [2]江西省水利科学院,江西省土壤侵蚀与防治重点实验室,南昌330029 [3]江西武夷山国家级自然保护区管理局,江西上饶334500

出　　处：《江西科学》2022年第6期1096-1101,共6页Jiangxi Science

基　　金：江西省青年科学基金资助项目(20192BAB213022);国家自然科学基金项目(42007066);江西省水利科学技术项目(202022YBKT21,202223YBKT20);江西省教育厅科学技术项目(GJJ215907)。

摘　　要：选取江西武夷山国家级自然保护区内毛竹林、杉木林、檫木林和柳杉林典型林地类型为研究对象,并以保护区周边裸地、茶园、水田等3片人类活动扰动样地作为参照,分析土壤水力特性差异,发现各典型林地类型样方的土壤比人类活动扰动土壤的持水性更好。考虑各样方土壤水力特性差异,以Richards方程模拟了土壤典型降雨-蒸发事件下土壤水运动过程,模拟结果表明各典型林地类型土壤比参照样地能更好地延缓径流输出、蓄积土壤水分以及增加空气湿度,这反映出森林土壤比人类活动扰动土壤具有更强的土壤水分调控效应。In this paper,the typical forest land types of Phyllostachys pubescens,Cunninghamia lanceolata,Sassafras sassafras and Cryptomeria fortunei in Jiangxi Wuyishan National Nature Reserve,were selected as the research object,and the three human activity disturbed sample plots around the Reserve,including bare land,tea garden and paddy field,were taken as the reference to analyze the differences in soil hydraulic characteristics.It was found that the soil of each typical forest land type sample had better water holding capacity than the human activity disturbed soil.Considering the difference of soil hydraulic characteristics of each sample plot,Richards’equation was selected to simulate the soil water movement process under the typical rainfall evaporation event of soil.The simulation results showed that the soil of each typical forest land type could better delay the runoff output,accumulate soil moisture and increase air humidity than the reference sample plot,which reflected that forest soil had a stronger soil water regulation effect than the soil disturbed by human activities.

关 键 词：土壤水力特性 土壤水分 RICHARDS方程 林地类型 武夷山 

分 类 号：S714.7[农业科学—林学] S727.21