文献类型：期刊文献

中文题名：六盘山北侧华北落叶松林土壤水文调节功能的坡位差异

英文题名：Slope Position Differentiation of Soil Hydrology of Larixprincipis-rupprechtii Plantation in the Northern Part of Liupan Mountains

作者：王正安[1,2];邸利[1];王彦辉[2];李振华[3];韩新生[4]

第一作者：王正安

机构：[1]甘肃农业大学资源与环境学院;[2]中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室;[3]新乡学院生命科学技术学院;[4]宁夏农林科学院荒漠化治理研究所

第一机构：甘肃农业大学资源与环境学院,兰州730070

年份：2017

卷号：35

期号：4

起止页码：509-515

中文期刊名：四川农业大学学报

外文期刊名：Journal of Sichuan Agricultural University

收录：北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金项目(41471029;41671025)

语种：中文

中文关键词：半干旱区;坡位;华北落叶松林;坐标综合评定法;土壤物理性质

外文关键词：semi-arid region; slopes; larch plantation; comprehensive coordinate method; soil physical property

摘要：【目的】综合评定森林土壤水文调节功能的坡位差异,为促进干旱半干旱地区的林水资源精细化管理提供依据。【方法】在宁夏六盘山北侧的坡面上,采用环刀法测定了不同坡位(上坡、中上坡、中坡、中下坡、下坡)华北落叶松人工林0~100 cm土层的土壤水文物理性质,并用坐标综合评定法定量评价了土壤水文调节功能。【结果】不同坡位的华北落叶松人工林土壤容重均值变化为:上坡(1.12 g/cm^3)>下坡(1.05 g/cm^3)>中下坡(1.04 g/cm^3)>中坡(1.03 g/cm^3)>中上坡(1.00 g/cm^3);土壤总孔隙度变化为:下坡(58.09%)>中下坡(56.25%)>中坡(56.04%)>中上坡(55.81%)>上坡(47.33%);土壤饱和蓄水量、非毛管蓄水量均在下坡最大,上坡最小;土壤初渗速率在不同坡位间的变化范围为3.97~8.12 mm/min,在下坡最大。综合评定值排序为:下坡>中下坡>中上坡>中坡>上坡。【结论】六盘山北侧华北落叶松林的土壤水文调节功能具有显著的坡位差异,整体表现为沿坡向下逐渐变优,上坡最差、下坡最优。
【Objective】The aim of the study was to evaluate soil hydrological function among slope positions and to provide a reference for forest-water management in the arid or semi-arid regions.【Method】On a slope of the northern part of Liupan Mountains in Ningxia,the bulk density,porosity,and permeability of 0 ~100 cm soils in Larixprincipis-rupprechtii plantation were measured in five slope positions(top,upper middle,middle,lower middle,and bottom) using a cutting ring method.Soil hydrological function was evaluated and compared by a comprehensive coordinate method.【Results】Soil bulk density(g/cm^3) in the slope followed an order of top(1.12)>bottom(1.05)>lower middle(1.04)>middle(1.03)>upper middle(1.00).Soil total porosity: bottom(58.09%)>lower middle(56.25%)>middle(56.04%)>uppermiddle(55.81%)>top(47.33%).Both soil saturated water content and non-capillary water capacity was maximum at the bottom position but minimum at the top position.The initial value of soil infiltration rate varied from 3.97 to 8.12 mm/min among positions.The comprehensive value of the soil hydrological adjustment ranked as bottom>lower middle>upper middle>middle>top.【Conclusion】In this study site,soil hydrological parameter of larch plantation showed significant differences among slope positions;The best one is bottom position but the worst one is top position.