Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest

Cao Yunsheng; Zhao Yanling; Liang Wenjun

doi:10.13961/j.cnki.stbctb.2019.03.031

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Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest

- Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest
- Bulletin of Soiland Water Conservation Vol. 39, Issue 3, Pages: 186-190(2019)
- 作者机构：
  
  1. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083
  2. 北京市工程咨询公司,北京,100083
  3. 中国矿业大学(北京)土地复垦与生态重建研究所,北京,100083
  4. 山西农业大学, 山西太谷,030800
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.03.031
  CLC： S727.21
- Published：2019
- 稿件说明：
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Cao Yunsheng, Zhao Yanling, Liang Wenjun. Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest[J]. Bulletin of Soiland Water Conservation, 2019, 39(3): 186-190.
DOI：

Cao Yunsheng, Zhao Yanling, Liang Wenjun. Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest[J]. Bulletin of Soiland Water Conservation, 2019, 39(3): 186-190. DOI： 10.13961/j.cnki.stbctb.2019.03.031.

摘要

[目的]探究不同经营措施对天然次生林枯落物层水源涵养能力的影响，确定最有利于提高枯落物层的水源涵养能力经营措施，为该地区天然次生林的健康经营提供理论依据和参考。[方法]通过采取现场测量与室内浸泡法测定枯落物层蓄水指标的变化来分析5种经营措施的作用，并设置未采取经营措施的样地作为对照，对林分的各项水源涵养指标进行评价。[结果]①经过改造措施后枯落物蓄积量均高于未改造的林分，改造4 a后枯落物蓄积量与改造之前相比增长27%～39%。②实施经营措施后2 a枯落物层最大持水量增长率为4.61%～9.30%，改造后2 a～4 a增长率为6.31%～7.66%。③改造后2 a与改造后4 a，枯落物自然持水量排序均为：引入灌木 > 封山育林 > 团状择伐 > 带状皆伐 > 抚育间伐 > 未改造，改造2 a后增长率在0.61%～29.68%之间，改造4 a后增长率在1.82%～31.91%之间。④经过改造，枯落物层有效拦蓄量2 a后增长率为3.67%～8.08%；改造后2 a～4 a增长率为4.51%～5.95%。[结论]实施经营措施的林分枯落物层蓄水指标均高于未改造林分，其中引入灌木的经营措施对林分枯落物蓄水能力的影响最明显。

Abstract

[Objective] The effects of different management measures on water conservation capacity of litter layer of natural secondary forest were studied

and the management measures that are most conducive to improving the water source conservation capacity of litter layer are determined in order to provide theoretical basis and reference for the healthy management of natural secondary forest in this area.[Methods] Field measurement and indoor immersion method were used to analyze the change of water storage index in the litter layer

and to analyze the effects of five different kinds of management measures. The plots without management measures were set as the control

the water conservation of the stand was adopted

and the water conservation indicators were evaluated.[Results] ① After the transformation measures

the accumulation of litter was higher than that of the unmodified stands

and the amount of litter accumulated after 4 years was increased by 27%~39% compared with that before the transformation. ② After the implementation of the management measures

the growth rate of the maximum water holding capacity of the 2 a litter layer was 4.61%~9.30%

and the growth rate of 2 a to 4 a after the transformation was 6.31%~7.66%. ③ After 2-year and 4-yearr transformation

the natural water holding capacity of litter was:introduction of shrubs > closure of hills for afforestation > squash selective cutting > strip clear cutting > tending and thinning > unreconstructed. The growth rate after the 2-year transformation was 0.61%~29.68%

while the growth rate after the 4-year transformation was 1.82%~31.91%. ④ After the transformation

the effective growth rate of the litter layer after 2 years was 3.67%~8.08%

and the growth rate after 2-4 years was 4.51%~5.95%.[Conclusion] The water storage index of the litter layer in the forest with the implementation of management measures was higher than that in the unreformed forest stand. The management measures of shrubs introduced had the most obvious influence on the water storage capacity of litter.

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references

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