Effect of Thinning on Hydrological Characteristics of Forest Litter in Larix principis-rupprechtii Mayr Plantation

BAI Yingchen; ZHU Jiang; CHENG Xiaoqin; HAN Hairong; KANG Fengfeng; WANG Tian; PENG Xinhao

doi:10.13870/j.cnki.stbcxb.2016.06.023

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Effect of Thinning on Hydrological Characteristics of Forest Litter in Larix principis-rupprechtii Mayr Plantation

更新时间：2025-03-12

- Effect of Thinning on Hydrological Characteristics of Forest Litter in Larix principis-rupprechtii Mayr Plantation
- Vol. 30, Issue 6, Pages: 128-133(2016)
- 作者机构：
  
  北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2016.06.023
  CLC： S715.7
- Published：2016
- 稿件说明：
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BAI Yingchen, ZHU Jiang, CHENG Xiaoqin, et al. Effect of Thinning on Hydrological Characteristics of Forest Litter in Larix principis-rupprechtii Mayr Plantation[J]. 2016, 30(6): 128-133.
DOI：

BAI Yingchen, ZHU Jiang, CHENG Xiaoqin, et al. Effect of Thinning on Hydrological Characteristics of Forest Litter in Larix principis-rupprechtii Mayr Plantation[J]. 2016, 30(6): 128-133. DOI： 10.13870/j.cnki.stbcxb.2016.06.023.

摘要

为探究密度调控措施对华北落叶松（Larix principis-rupprechtii Mayr）人工林枯落物水文效应的影响，以山西太岳山好地方林场35 a生华北落叶松（principis-rupprechtii L.）人工林为研究对象，采用样地调查和室内浸泡法分析了不同密度调控处理下未分解层和半分解层枯落物储量、枯落物持水特征、枯落物持水量和持水速率及其与浸水时间的关系。结果表明：（1）4种密度调控处理枯落物储量由大到小依次为：轻度密度调控处理（LT）＞中度密度调控处理（MT）＞重度密度调控处理（HT）＞对照处理（CK），不同强度的密度调控处理有利于林分凋落物的产生；（2）CK、LT、MT和HT的最大持水率分别为214.30%，219.28%，256.95%和249.50%，最大持水量分别为125.24，186.24，197.68，157.96 t/hm2，有效拦蓄量分别为56.06，72.46，82.59，58.47 t/hm2；（3）半分解层枯落物持水量均高于未分解层，而不同密度调控处理对未分解层枯落物的持水过程影响并不显著，MT处理下半分解层枯落物持水量明显高于LT、HT和CK处理；（4）枯落物持水速率与浸水时间之间存在明显的幂函数关系，半分解层相对未分解层具有更强的持水能力，不同密度调控处理对枯落物持水速率的影响并不显著。

Abstract

In order to explore the effects of varying thinning intensities on litter hydrology in Larix principis-rupprechtii Mayr plantations

a study was conducted in Haodifang Forest Farm

Taiyue Mountains

Shanxi Province. Sample site investigation and laboratory soaking method were used to analyze litter reserves

litter water retention characteristics

litter water holding capacity and absorption rate and their relationships with soaking time for the un-decomposed litter layers and half-decomposed litter layers under different density regulations. The results showed that: (1) The litter reserves showed an order of low thinning (LT)＞moderate thinning (MT)＞heavy thinning (HT)＞control (CK)

indicating that different density control had a positive effect on forest litter production. (2) The maximum water holding rate in CK

MT and HT was 214.30%

219.28%

256.95% and 249.50%

respectively. The maximum water holding capacity was 125.24 t/hm2

186.24 t/hm2

197.68 t/hm2 and 157.96 t/hm2

respectively. The effective water retaining content was as followed 56.06 t/hm2

72.46 t/hm2

82.59 t/hm2 and 58.47 t/hm2. (3) The water holding capacity in half-decomposed litter layers was higher than that in un-decomposed litter layers

but different density control had little effects on water holding process in un-decomposed litter layers. The water holding capacity under MT control was obviously higher than that under LT

HT and CK in half-decomposed litter layers. (4) The absorption rate and soaking time showed a power function. Half-decomposed litter layers had higher water holding capacity than un-decomposed litter layers. There was no significant difference in litter water absorption rate among different density controls.

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