摘要
森林枯落物在水源涵养、水土保持和拦蓄径流等方面具有重要作用,研究枯落物的持水特性对评价不同林分的水文效应具有重要意义。采用样地调查法和室内浸泡法,对涿鹿林场4种不同类型林分枯落物持水特性进行研究。结果表明:(1)枯落物蓄积量排序为油松林>华北落叶松林>山杨林>白桦林,半分解层大于未分解层。(2)枯落物持水量随时间增加而增加,但速率趋于渐缓;枯落物吸水速率随时间增加而减小,呈指数关系;枯落物最大持水量排序为华北落叶松>油松>山杨>白桦,有效拦蓄量排序为华北落叶松>油松>山杨>白桦,有效拦蓄率排序为华北落叶松>白桦>油松>山杨。华北落叶松林枯落物水文效应最好,其次是油松林。
Forest litter plays an important role in water conservation,soil and water conservation,and runoff retention.The study of the water-holding characteristics of forest litter is of great significance to evaluate the hydrological effects of different stands.In this paper,the water-holding characteristics of 4 different types of litter in Zhuolu forest farm were studied by sample plot investigation and indoor immersion method.The results showed that:(1)the order of litter accumulation was Pinus tabulaeformis forest>Larix principis-rupprechtii forest>Populus davidiana forest>Betula platyphylla forest,and the semi-decomposed layer was larger than the undecomposed layer,(2)the litter water capacity increased with time,but the rate tended to slow down;the water absorption rate of litter decreased with time,showed an exponential relation;the order of maximum water holding capacity was L.principis-rupprechtii>Pinus tabulaeformis>Populus davidiana>B.platyphylla,the order of effective interception was L.principis-rupprechtii>P.tabulaeformis>Populus davidiana>B.platyphylla,and the effective interception rate was L.principis-rupprechtii>B.platyphylla>Pinus tabulaeformis>Populus davidiana.Taken together,resultsr eveal that the litter of L.principis-rupprechtii has the best hydrological effect,followed by P.tabulaeformis forest.
作者
郭建军
王娅茹
孟祥嵩
吴丹
梁世兴
张晓琴
杨新兵
Guo Jianjun;Wang Yaru;Meng Xiangsong;Wu Dan;Liang Shixing;Zhang Xiaoqin;Yang Xinbing(Saibei Forest Farm of Zhangjiakou City(State-owned forest farm Administration Office of Zhangjiakou City),Zhangjiakou 075000,Hebei;Zhuolu Forest Farmof Zhangjiakou,Zhangjiakou 075600,Hebei;College of Forestry,Hebei Agricultural University,Baoding 071000,Hebei)
出处
《防护林科技》
2022年第3期1-5,共5页
Protection Forest Science and Technology
基金
中央财政林业科技推广示范资金项目“标准化水源保护林营造及经营示范区建设”(冀sfq〔2020〕003号)。
关键词
京西水源林
枯落物
枯落物蓄积量
枯落物水文效应
West Beijing water source protection forests
litter
litter accumulation
litter hydrological effects
