文献类型：期刊文献

中文题名：江西大岗山常绿阔叶林的降水再分配

英文题名：Precipitation Redistribution of Evergreen Broad-Leaved Forest in Dagang Mountain,Jiangxi Province

作者：高瑶瑶[1] 王兵[1,2,3] 宋庆丰[2,3]

第一作者：高瑶瑶

机构：[1]江西农业大学园林与艺术学院学院;[2]中国林业科学研究院森林生态环境与保护研究所;[3]国家林业局森林生态环境重点实验室

年份：2018

卷号：1

期号：2

起止页码：20-25

中文期刊名：温带林业研究

外文期刊名：Journal of Temperate Forestry Research

基金：中国森林核算及纳入绿色经济评价研究(2017-R11);林业行业标准项目(2017-LY-012);科技创新服务能力建设-协同创新中心-林业果业生态环境功能提升协同创新中心(2011协同创新中心)(市级)(PXM2017_014207_000024)

语种：中文

中文关键词：常绿阔叶林;林内降水;树冠截留;树干茎流;枯落物蓄水

外文关键词：evergreen broad-leaved forest;forest rainfall;canopy interception;stemflow;dead branches store water

分类号：S718.56

摘要：林冠层、枯落物层和土壤层对大气降水的再分配是森林发挥涵养水源功能的途径,并且森林通过降水再分配过程影响着流域的水量平衡和物质循环。采用定位观测法和水量平衡法,根据2014—2015年这两年对大岗山区常绿阔叶林降水的再分配情况研究可知:(1)研究区降水量为1 719.8 mm,以小到中雨为主,单场降水量最大为96.2mm,最小为3.4 mm。单场降水最大降水强度68.6 mm·h^(-1),降水的最小强度为0.75 mm·h^(-1)。(2)常绿阔叶林的穿透水量总量为1 309.5 mm,占总降水量的76.1%;穿透水量与降水量之间有着非常明显的正相关关系(r=0.999,p <0.01);穿透水率与降水量存在对数关系。(3)林冠截留量总量为301.7 mm,占总降水量的5.1%;林冠的截留量与降水强度有正相关关系,但是和降水量却相反。(4)树干茎流总量为92.1 mm,占年降水总量的5.3%;夏季与冬季相比,树干茎流量相差了14倍。(5)枯落物的有效持水量约为3.21 mm,其中含水率可以达到2/3。综上所述,影响常绿阔叶林降水再分配的因素很多,且相互影响。研究常绿阔叶林降水再分配动态过程为今后掌握常绿阔叶林的生长情况与降水之间存在的可能关系,提高亚热带地区综合水源涵养能力,以及常绿阔叶林的生态系统与降水、河流管理、水文生态、水环境建设等之间的关系提供科学的指导依据。
The redistribution of atmospheric precipitation by forest canopy,litter layer and soil layer is the way for forest to play the function of water conservation,and the redistributing process of forest through precipitation affects the water balance and material circulation of the basin. The precipitation redistribution process of evergreen broad-leaved forest in Dagang Mountain was studied by means of location observation method and water balance method,and the observation data from 2004 to 2012 were used. The results show:(1)The precipitation in the study area was 1 719.8 mm,which was mainly small to medium rain,with the maximum rainfall of 96.2 mm and the minimum of 3.4 mm. The maximum rainfall intensity of single field is 68.6 mm/h,and the minimum intensity of rainfall is 0.75 mm·h-1.(2)The total amount of penetrating water of evergreen broad-leaved forest is 1309.5 mm,accounting for 76.1% of the total precipitation. There is a very significant positive correlation between the penetration and precipitation(r=0.999, p < 0.01),and there is a logarithmic relationship between penetrating water ratio and precipitation.(3)Canopy interception amount of 301.7 mm,accounting for 5.1% of the total precipitation;The interception of canopy is positively correlated with rainfall intensity,but it is contrary to rainfall.(4)The trunk flow is 92.1 mm,and it’s a 5.3 percent of the annual rainfall;Compared with winter,stem flow increased 14 times in summer.(5)The effective water holding capacity of the litter is about 3.21 mm,of which the natural moisture content can reach 2/3. In summary,There are a lot of factors that affect the redistribution of the evergreen broadleaf forest,and these factors interact with each other. The study on the dynamic process of precipitation redistribution in evergreen broad-leaved forest provides a scientific basis for the future study of the relationship between the growth situation of evergreen broad-leaved forest and rainfall water,the improvement of comprehensive water conservation capacity in subtropical regions,and the relationship between the ecological system of evergreen broad-leaved forest and precipitation,river management,hydrological ecology and water environment construction.