Evaluation on the Difference of Understory Water Conservation Function After Chinese Fir Replacing Broad-leaved Forest

CHEN Qi; LIU Yuanqiu; LIU Shiyu; PAN Jun; CAO Wen; NIU Jiehui; BAI Tianjun; DENG Wenping

doi:10.13870/j.cnki.stbcxb.2019.02.038

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Evaluation on the Difference of Understory Water Conservation Function After Chinese Fir Replacing Broad-leaved Forest

更新时间：2025-03-12

- Evaluation on the Difference of Understory Water Conservation Function After Chinese Fir Replacing Broad-leaved Forest
- Vol. 33, Issue 2, Pages: 244-250(2019)
- 作者机构：
  
  1. 江西农业大学林学院,南昌,330045
  2. 鄱阳湖流域森林生态系统保护与修复实验室,南昌,330045
  3. 江西庐山森林生态系统定位观测研究站,江西,九江,332900
  4. 江西农业大学国土资源与环境学院, 江西省鄱阳湖流域农业资源与生态重点实验室,南昌,330045
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.02.038
  CLC：
- Published：2019
- 稿件说明：
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CHEN Qi, LIU Yuanqiu, LIU Shiyu, et al. Evaluation on the Difference of Understory Water Conservation Function After Chinese Fir Replacing Broad-leaved Forest[J]. 2019, 33(2): 244-250.
DOI：

CHEN Qi, LIU Yuanqiu, LIU Shiyu, et al. Evaluation on the Difference of Understory Water Conservation Function After Chinese Fir Replacing Broad-leaved Forest[J]. 2019, 33(2): 244-250. DOI： 10.13870/j.cnki.stbcxb.2019.02.038.

摘要

为研究杉木人工林取代常绿落叶阔叶混交林后土壤水源涵养能力的变化，采用室内浸水法和环刀法分别研究杉木纯林和常绿落叶阔叶混交林的枯落物与土壤的持水特性。结果表明：（1）枯落物平均蓄积量表现为常绿落叶阔叶混交林（3.42 t/hm2）>杉木纯林（3.12 t/hm2），枯落物平均厚度表现为杉木纯林（9.17 cm）>常绿落叶阔叶混交林（5.42 cm）。（2）最大持水量表现为常绿落叶阔叶混交林（6.23 t/hm2）>杉木纯林（5.57 t/hm2），最大持水率也表现出相同的规律，即常绿落叶阔叶混交林（184.40%）>杉木纯林（179.50%）；有效拦蓄量表现为常绿落叶阔叶混交林（4.48 t/hm2）>杉木纯林（4.13 t/hm2），最大拦蓄量表现为常绿落叶阔叶混交林（5.41 t/hm2）>杉木纯林（4.97 t/hm2）。（3）枯落物层的吸水量与浸水时间符合对数函数Q=aln （t）+b，而吸水速率与浸水时间符合指数函数V=atb，常绿落叶阔叶混交林的蓄水能力强于杉木纯林。（4）土壤水分最大吸持贮水量表现为常绿落叶阔叶混交林（43.58 mm）>杉木纯林（41.88 mm），可以看出常绿落叶阔叶混交林内的土壤可以更好地为植被提供良好的水分供其生长；土壤水分最大滞留贮存量表现为常绿落叶阔叶混交林（8.20 mm）

Abstract

In order to study the changes of soil water conservation ability after replacing evergreen deciduous broad-leaved mixed forest with Chinese fir plantation

the water retention characteristics of the litter and soil in the above two stands were studied by the indoor soaking method and the cutting ring method

respectively. The results showed that:(1) The average volume of litter in the evergreen deciduous broad-leaved mixed forest (3.42 t/hm2) was higher than that in the Chinese fir plantation (3.12 t/hm2)

and the average litter thickness was Chinese fir forest (9.17 cm)>evergreen deciduous broad-leaved mixed forest (5.42 cm). (2) The maximum water-holding capacity was evergreen deciduous broad-leaved mixed forest (6.23 t/hm2)>Chinese fir forest (5.57 t/hm2)

and the maximum water holding rate also showed the same rule

that was

evergreen deciduous broad-leaved mixed forest (184.40%)>Chinese fir forest(179.50%). The effective interception amount and the maximum amount of interception were both evergreen deciduous broad-leaved mixed forest (4.48 t/hm2 and 5.41 t/hm2)>Chinese fir forest (4.13 t/hm2 and 4.97 t/hm2). (3) The water absorption amount and soaking time of litter layer accorded with logarithmic function Q=aln(t)+b

while the water absorption rate and soaking time accorded with exponential function V=atb

the water storage capacity of evergreen deciduous broad-leaved mixed forest was stronger than that of Chinese fir forest. (4) The maximum soil water holding capacity of evergreen deciduous broad-leaved mixed forest (43.58 mm) was higher than that of Chinese fir forest (41.88 mm)

the soil in evergreen deciduous broad-leaved mixed forest could provide better water support for vegetation growth. The maximum retention of soil moisture was evergreen deciduous broad-leaved mixed forest (8.20 mm)

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