Effect of Natural Vegetation Restoration on Soil Infiltration in Slope Farmland of Loess Hilly and Gully Region

DONG San-xiao

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Effect of Natural Vegetation Restoration on Soil Infiltration in Slope Farmland of Loess Hilly and Gully Region

- Effect of Natural Vegetation Restoration on Soil Infiltration in Slope Farmland of Loess Hilly and Gully Region
- Bulletin of Soiland Water Conservation Vol. 23, Issue 4, Pages: 1-5(2004)
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DONG San-xiao. Effect of Natural Vegetation Restoration on Soil Infiltration in Slope Farmland of Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2004, 23(4): 1-5.
DOI：

DONG San-xiao. Effect of Natural Vegetation Restoration on Soil Infiltration in Slope Farmland of Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2004, 23(4): 1-5. DOI：

摘要

生态系统自我修复是黄土高原植被恢复的重要途径。以永久性天然草地和三龄沙打旺人工草地为对照

在对黄土丘陵区坡地退耕植被自然恢复过程群落演替、地上部分生物量的增长及其组成动态变化特征调查的基础上

定量分析了不同恢复阶段主要群落下土壤的入渗能力。研究表明

随着植被演替的进展

群落生物量逐步增加

土壤入渗能力显著改善。退耕草地土壤表层0-20cm土壤渗透能力(K

10℃

)每年可提高0.10mm。植被改善土壤入渗能力的有效深度达40cm。说明黄土丘陵区通过坡地退耕还林还草恢复植被可以改善土壤渗透性能

强化降雨就地入渗

减少水土流失。

Abstract

Ecosystem self-rehabilitation is an important component of vegetation restoration in the loess hilly and gully region.Using natural and artificial grassland as controls

this study considered vegetation succession

aboveground biomass and soil infiltration in slope land subject to the conversion of farm land to natural vegetation.The results show that after land use conversion

the natural vegetation communities soon exhibited positive succession

with increasing biomass and improving soil infiltration. It is possible that within 20 years

the annual surface soil infiltration could increase by 0.01mm/m in and could reach to 40cm in depth.It is suggested that converting slope farm land to natural grassland is an effective approach to improve soil infiltratioin

and consequently

soil conservation.

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