Effect of Vegetation Restoration on Soil Nutrient Changes in Zhifanggou Watershed of Loess Hilly Region

WANG Guo liang; LIU Guo bin; XU Ming xiang

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Effect of Vegetation Restoration on Soil Nutrient Changes in Zhifanggou Watershed of Loess Hilly Region

- Effect of Vegetation Restoration on Soil Nutrient Changes in Zhifanggou Watershed of Loess Hilly Region
- Bulletin of Soiland Water Conservation Vol. 21, Issue 1, Pages: 1-5(2002)
- 作者机构：
  
  1. 中国科学院教育部水土保持与生态环境研究中心, 陕西杨凌,712100
  2. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：2002
- 稿件说明：
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WANG Guo liang, LIU Guo bin, XU Ming xiang. Effect of Vegetation Restoration on Soil Nutrient Changes in Zhifanggou Watershed of Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2002, 21(1): 1-5.
DOI：

WANG Guo liang, LIU Guo bin, XU Ming xiang. Effect of Vegetation Restoration on Soil Nutrient Changes in Zhifanggou Watershed of Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2002, 21(1): 1-5. DOI：

摘要

经过20a多的人工恢复和封禁措施，纸坊沟流域内的植物群落对土壤养分产生明显影响，植被对土壤养分的作用表现为，在植被作用下土壤有机质、全氮、水解氮、全磷、速效磷向土壤上层富集，但不同植被对养分的影响不同。从土壤剖面来看，植被对0-20 cm土壤养分作用大于20-40 cm；从植被生活型来看，草本对0-40 cm土壤养分的提高作用大于乔木和灌木。土壤全氮与土壤有机质之间有良好的线性相关关系，土壤全磷与土壤有机质之间也有一定的线性相关关系，其中0-20 cm相关性好，但20-40 cm相关性较差，说明土壤有机质的累积和分解对土壤全磷和全氮有重要影响。

Abstract

Through more than 20 years artificial vegetation restoration and stopping grazing in Zhifanggou watershed

the plant communities had obvious effect on the soil nutrient by vegetation accumulation on the top of the soil with various effect of different plant. The content of nutrient in the profile of soil in 0-20 cm was higher than that in 20-40 cm

and the increasing effect on soil nutrient by herbage communities was clearer than by arboreal communities and by bush communities. In addition

the content of nitrogen had a linear correlativity with the organic matter content. The content of phosphorus had a linear correlativity with organic matter too. However

in 20-40 cm soil layer

the relationship of linear correlativity was not significant.

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references

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彭祥林,贾恒义. 黄土高原草地土壤生态[M].北京:世界图书出版公司北京公司,1997.151-241.

单建平. 国外对树木细根的研究动态[J].生态学杂志,1992,(04):46-49.

王百群,刘国彬,张成娥. 黄土丘陵区坡地土壤养分及其生产力的空间变异性[J].水土保持通报,2000,(07):70-73.

Stone J R. Effect of erosion and landdcape position on the product ivity of Piedmont soil[J].Soil Science Society of America Journal,1985.987-991.

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