Soil Infiltration Characteristics and Influencing Factors Under Different Vegetation Cover Types in Dianchi Lake Basin

HE Miaomiao; LIU Zhiqin; WANG Keqin; LEI Zutuan

doi:10.13870/j.cnki.stbcxb.2022.03.026

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Soil Infiltration Characteristics and Influencing Factors Under Different Vegetation Cover Types in Dianchi Lake Basin

更新时间：2026-04-09

- Soil Infiltration Characteristics and Influencing Factors Under Different Vegetation Cover Types in Dianchi Lake Basin
- Vol. 36, Issue 3, Pages: 181-187(2022)
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- DOI：10.13870/j.cnki.stbcxb.2022.03.026
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- Online First：27 May 2022，
  
  Published：2022
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HE Miaomiao, LIU Zhiqin, WANG Keqin, et al. Soil Infiltration Characteristics and Influencing Factors Under Different Vegetation Cover Types in Dianchi Lake Basin[J]. 2022, 36(3): 181-187.
DOI：

HE Miaomiao, LIU Zhiqin, WANG Keqin, et al. Soil Infiltration Characteristics and Influencing Factors Under Different Vegetation Cover Types in Dianchi Lake Basin[J]. 2022, 36(3): 181-187. DOI： 10.13870/j.cnki.stbcxb.2022.03.026.

摘要

为掌握滇中高原滇池流域周边不同植被覆盖类型对土壤入渗性能的影响

选用双环入渗法探究土壤入渗特性。以滇池流域典型植被覆盖类型(华山松+云南油杉混交林、云南松纯林、旱冬瓜+麻栎混交林、桉树人工林、灌木林)为研究对象

通过野外调查和试验测定

揭示土壤入渗特性及影响入渗的特征因子。结果表明:(1)华山松+云南油杉混交林与云南松纯林、旱冬瓜+麻栎混交林、桉树人工林、灌木林相比

[JP]土壤容重最小

有机质含量最高

水稳性团聚体最多

孔隙度和非毛管孔隙度比例明显优于其他林地。(2)5种植被覆盖类型下入渗性能有明显差别

具体入渗性能表征为华山松+云南油杉混交林＞旱冬瓜+麻栎混交林＞灌木林＞云南松纯林＞桉树人工林。(3)选择Kostiakov公式、Horton公式、Philip公式

模拟5种典型植被类型覆盖下林地土壤入渗过程

Philip模型对滇池流域土壤入渗过程的拟合效果最佳。(4)5种典型植被类型覆盖下

林地土壤入渗特征与土壤容重均呈显著负相关(P＜0.05)

初始入渗速率与非毛管孔隙度、＞5 mm水稳性团聚体、＞2 mm水稳性团聚体均呈极显著正相关(P＜0.01);土壤入渗的5个主要影响因子为＞2 mm水稳性团聚体、＞5 mm水稳性团聚体、容重、有机质、非毛管孔隙度。研究结果为该研究区水土流失治理和土壤侵蚀防治提供基础依据。

Abstract

In order to master the effects on soil infiltration performance of different vegetation cover types around Dianchi Lake Basin in Central Yunnan Plateau

double ring infiltration method was used to explore soil infiltration characteristics. Taking the typical vegetation cover types ofPinus armandiiFranch.+ Keteleeria evelynianaMast.mixed forest

Pinus yunnanensispure forest

Alnus nepalensisD. Don + Quercus acutissimaCarruth.mixed forest

Eucalyptus robustaSmith artificial forest and shrub forest in Dianchi Lake Basin as the research objects

soil infiltration characteristics and its influencing were studied through field investigation and experimental measure. The results showed that:(1) Compared with P. yunnanensis pure forest

A. nepalensisD. Don + Q. acutissimaCarruth.mixed forest and E. robustaSmith artificial forest and shrub forest

P. armandiiFranch.+ K. evelynianaMast.mixed forest had the lowest soil bulk density

the highest content of organic matter

the most water stable aggregates

and the proportion ofporosity and non capillary porosity. (2) Soil infiltration performance significantly differed under different vegetation cover types

which listed in the following order:P. armandiiFranch.+ K. evelynianaMast. mixed forest > A. nepalensisD. Don+ Q. acutissimaCarruth.mixed forest > shrub forest > P. yunnanensispure forest > E. robustaSmith artificial forest. (3) Kostiakov formula

Horton formula

and Philip formula were selected to simulate the soil infiltration process of forest land under five typical vegetation types. Through data comparison

it could be seen that Philip model had the best fitting effect on the soil infiltration process of Dianchi Lake Basin. (4) Correlation analysis showed that there was a significant negative correlation between soil infiltration characteristics and soil bulk density under five typical vegetation types (P<0.05)

and there were significant positive correlations between initial infiltration rate and non-capillary porosity

>5 mm water stable aggregate content

and >2 mm water stable aggregate content (P<0.01). Principal component analysis showed that the five main influencing factors of soil infiltration were >2 mm water stable aggregate content

>5 mm water stable aggregate content

bulk density

organic matter

and non-capillary porosity. The research results could provide a basis for soil erosion control and soil erosion control in the study area.

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