Benefits of Different Age Forest Vegetation on Soil Fertilization and Amelioration

AN Shao shan; CHANG Qing rui; LI Bi cheng; GAO Ya jun; MENG Qing xiang

doi:11894/1005-829x.2001.21(3).75

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Benefits of Different Age Forest Vegetation on Soil Fertilization and Amelioration

- Benefits of Different Age Forest Vegetation on Soil Fertilization and Amelioration
- Bulletin of Soiland Water Conservation Vol. 20, Issue 3, Pages: 75-77(2001)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  2. 西北农林科技大学资源与环境学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：11894/1005-829x.2001.21(3).75
  CLC：
- Published：2001
- 稿件说明：
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AN Shao shan, CHANG Qing rui, LI Bi cheng, et al. Benefits of Different Age Forest Vegetation on Soil Fertilization and Amelioration[J]. Bulletin of Soiland Water Conservation, 2001, 20(3): 75-77.
DOI：

AN Shao shan, CHANG Qing rui, LI Bi cheng, et al. Benefits of Different Age Forest Vegetation on Soil Fertilization and Amelioration[J]. Bulletin of Soiland Water Conservation, 2001, 20(3): 75-77. DOI： 11894/1005-829x.2001.21(3).75.

摘要

在黄土丘陵沟壑区森林植被能够明显改善生态环境，防止土地退化，提高土壤中有机质、速效氮和速效钾的含量，降低土壤pH和容重 ;快速显着地增加土体中 >0.25mm水稳性团聚体和 >50μm微团粒的数量，使土壤结构改善，协调供应养分和水分的能力提高 ;能促进黏粒形成，坚实度增加，土壤的抗蚀性和抗冲性提高，有效地减少水土流失。植被对土壤的培肥改良是一种正向持续反馈机制，时间越长，效益越显着。

Abstract

Forest vegetation can ameliorate obviously eco-environment

prevent land deterioration

improve the content of soil organic matter and available N

and drop soil pH and bulk density

add remarkably the quantity of water aggregate( > 0. 25mm) and micro-aggregate( > 50Lm) of soil

which can make soil construction better

improve the capacity of providing nutrient and water

enhance the formation of clay and more solidity

increase soil ant-i erodibility and ant-i scourability and decrease effectively soil and water loss. Vegetation fertilized and ameliorated soil mechanism is a right direction of abiding feedback

long time and more benefits.

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