Effects of Different Vegetation Restoration Strategies on Soil Penetrability of Karst Ecosystem in Guizhou Province

CHENG Hanting; LI Qinfen; WANG Xiaomin; LU Tianyu; ZHANG Xianbo

doi:10.13870/j.cnki.stbcxb.2020.06.017

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Effects of Different Vegetation Restoration Strategies on Soil Penetrability of Karst Ecosystem in Guizhou Province

更新时间：2025-03-12

- Effects of Different Vegetation Restoration Strategies on Soil Penetrability of Karst Ecosystem in Guizhou Province
- Vol. 34, Issue 6, Pages: 110-116(2020)
- 作者机构：
  
  1. 中国热带农业科学院环境与植物保护研究所,海口,570100
  2. 海南省热带生态循环农业重点实验室,海口,570100
  3. 农业部儋州农业环境科学观测实验站,海口,570100
  4. 贵州省亚热带作物研究所, 贵州兴义,562400
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.06.017
  CLC： S152.7
- Published：2020
- 稿件说明：
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CHENG Hanting, LI Qinfen, WANG Xiaomin, et al. Effects of Different Vegetation Restoration Strategies on Soil Penetrability of Karst Ecosystem in Guizhou Province[J]. 2020, 34(6): 110-116.
DOI：

CHENG Hanting, LI Qinfen, WANG Xiaomin, et al. Effects of Different Vegetation Restoration Strategies on Soil Penetrability of Karst Ecosystem in Guizhou Province[J]. 2020, 34(6): 110-116. DOI： 10.13870/j.cnki.stbcxb.2020.06.017.

摘要

旨在探讨不同植被恢复策略对土壤入渗特征空间变化的影响，通过对贵州石漠化治理试验区自然草灌木混合林、次生林地、退耕自然生草地、芒果地、坚果地及玉米地的土壤容重、土壤孔隙度、土壤有机质和土壤渗透特性的分析。结果表明：不同植被恢复策略下土壤容重、孔隙度和有机质含量存在显著差异，具体表现为自然植被恢复（草—灌木混合林和次生林地）和秸秆还田种植方式均能有效降低土壤容重，增加土壤孔隙度。随着土层深度增加，土壤容重呈增大趋势，土壤孔隙度和有机质含量变化趋势相反；植被恢复方式和土层深度显著改变了土壤的水分渗透特性，自然植被恢复（草—灌木混合林和次生林地）土壤渗透性能高于人工植被恢复（芒果地和坚果地），主要是因为自然植被恢复下土壤扰动小，植物根系和凋落物增加，从而改变土壤物理性质，降低土壤容重，提高土壤孔隙度的综合效益。随着土层深度增加，土壤稳渗速率和累积入渗量减小。通过测定不同植被恢复方式的土壤水文特征，为喀斯特地区植被恢复方式及土壤入渗性能评估提供科学依据。

Abstract

In recent years

the influence of vegetation restoration on soil infiltration process in different ecosystems has been a hot topic. The purpose of this study was to explore the influence of different vegetation restoration strategies on the spatial change of soil infiltration characteristics. Through the analysis of soil bulk density

soil porosity

soil organic matter

and soil penetrability characteristics of natural grass shrub mixed forest

secondary forest land

natural grassland

mango land

nut land

and corn land in the experimental area of rocky desertification control in Guizhou

the results showed that: For different vegetation restoration strategies

there are significant differences in soil bulk density

porosity

and organic matter content

which are manifested in natural vegetation restoration (grass shrub mixed forest and secondary forest land) and straw returning planting mode can effectively reduce soil bulk density and increase soil porosity. With the increase of soil depth

soil bulk density increased

soil porosity and organic matter content changed in the opposite direction. Different vegetation restoration methods and soil depth significantly changed the soil water permeability characteristics

among which

the soil permeability of natural vegetation restoration (grass shrub mixed forest and secondary forest land) was higher than that of artificial vegetation restoration (mango land and nut land)

mainly because under the condition of nature vegetation restoration

soil disturbance was small

plant roots and litter increased

which changes the physical properties of soil

reduces soil bulk density

and improves the comprehensive benefits of soil porosity. With the increase of soil depth

steady infiltration rate and cumulative infiltration amount decreased. By measuring the soil hydrological characteristics of different vegetation restoration methods

we can provide a scientific basis for the evaluation of vegetation restoration methods and soil infiltration performance in karst areas.

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