Water Conservation Ability of Litter in

YANG Jiahui; TAN Wei; MAO Guangxian; FENG Yan

doi:10.13870/j.cnki.stbcxb.2020.02.042

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Water Conservation Ability of Litter in

更新时间：2025-03-12

- Water Conservation Ability of Litter in
- Vol. 34, Issue 2, Pages: 296-301(2020)
- 作者机构：
  
  1. 贵州大学林学院,贵阳,550025
  2. 贵州大学林业信息工程研究中心,贵阳,550025
  3. 安顺市平坝区林业局,贵州,安顺,561100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.02.042
  CLC： S727.21
- Published：2020
- 稿件说明：
移动端阅览
YANG Jiahui, TAN Wei, MAO Guangxian, et al. Water Conservation Ability of Litter in[J]. 2020, 34(2): 296-301.
DOI：

YANG Jiahui, TAN Wei, MAO Guangxian, et al. Water Conservation Ability of Litter in[J]. 2020, 34(2): 296-301. DOI： 10.13870/j.cnki.stbcxb.2020.02.042.

摘要

为了解不同林龄柳杉人工林枯落物的水源涵养能力，为森林水土保持措施的确定和实施提供依据，于2018年10月选取平坝区大坡林场5个龄组柳杉人工林作为研究对象，采用烘干法和实验室浸水法对枯落物的持水性能进行研究，并采用熵权法对柳杉人工林5个龄组枯落物水源涵养能力进行综合评价。结果表明：（1）随着柳杉人工林的生长发育，枯落物储量及持水特性呈现先增加后减小的趋势，表现出成熟林最大，幼龄林最小。其中成熟林枯落物厚度为7.40 cm，蓄积量为2.21 t/hm2，最大持水量为6.46 t/hm2，最大持水率为265.14 t/hm2，有效拦蓄量为3.94 t/hm2，有效拦蓄率为175.74%。（2）利用熵权法计算出柳杉人工林5个龄组枯落物的水源涵养能力为成熟林（11.46） > 近熟林（10.79） > 过熟林（8.26） > 中龄林（4.83） > 幼龄林（3.94），柳杉成熟林具有最佳的水源涵养能力。

Abstract

The purposes of this study were to understand the water conservation capacity of litter of Cryptomeria fortunei plantation with different forest ages

and to provide basis for the determination and implementation of forest soil and water conservation measures. Five age groups of C. fortunei plantation in Pingba Dapo Forest Farm of Guizhou Province were chosen as object in October 2018. The water holding capacity of litter was studied by drying method and laboratory immersion method

and the water conservation function of litter in five age groups was evaluated comprehensively by entropy weight method. The results showed that:(1) With the growth and development of C. fortune plantation

litter reserves and water holding characteristics showed a trend of first increasing and then decreasing

showing that mature forest was the largest and young forest was the smallest. The litter thickness

volume

maximum water-holding capacity

maximum water-holding rate

effective storage capacity and effective storage rate of mature forest were 7.40 cm

2.21 t/hm2

6.46 t/hm2

265.14 t/hm2

3.94 t/hm2

and 175.74% respectively. (2) The water conservation capacity of litter in five age groups was calculated by the method of entropy weight

which was:mature forest (11.46) > near-mature forest (10.79) > over-mature forest (8.26) > middle-aged forest (4.83) > young forest (3.94). The mature forest had the largest water conservation capacity.

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