A Preliminary Report of Study on Soil Anti-erodibility of Mixture-planted Forest in Semiarid Loess Hilly Gully Region

Yu Qing-zhu; SHI Ming-zhou

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A Preliminary Report of Study on Soil Anti-erodibility of Mixture-planted Forest in Semiarid Loess Hilly Gully Region

- A Preliminary Report of Study on Soil Anti-erodibility of Mixture-planted Forest in Semiarid Loess Hilly Gully Region
- Bulletin of Soiland Water Conservation Vol. 9, Issue 5, Pages: 5-9(1990)
- 作者机构：
  
  1. 西北林学院
  2. 黄委会天水水保科学试验站
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1990
- 稿件说明：
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Yu Qing-zhu, SHI Ming-zhou. A Preliminary Report of Study on Soil Anti-erodibility of Mixture-planted Forest in Semiarid Loess Hilly Gully Region[J]. Bulletin of Soiland Water Conservation, 1990, 9(5): 5-9.
DOI：

Yu Qing-zhu, SHI Ming-zhou. A Preliminary Report of Study on Soil Anti-erodibility of Mixture-planted Forest in Semiarid Loess Hilly Gully Region[J]. Bulletin of Soiland Water Conservation, 1990, 9(5): 5-9. DOI：

摘要

半干旱黄土丘陵沟壑区

在同一条件下

0～100cm土层内

有机质和水稳性团粒抗蚀性指标

混交林较纯林分别高38%和23%; 分散率和分散系数抗蚀性指标

混交构较纯林分别低3.5%和3.9%。经差异显著性检验

有机质和水稳性团粒抗蚀性指标

以99%概率保证

差异极显著

分散率和分散系数抗蚀指标

以95%概率保证

差异显著。但分层指标不规律。

Abstract

This paper studies mainly soilanti-erodibility indices of mixture-planted and pure-planted forest. Results show that soil organic material and water stable aggregate contents of mixed forest are greater than those of pure forest by 38% and 23% respectively

rate and coefficient of soil dispectively in 0-100 cm soil layers under the same condition. The difference of organic material and water stable aggregate contents between mixed and pure forest-land is extremely significant. The difference of rate and coefficient of dispersion between mixed and pure forest-land is significant

but the indices of various sooil layers is irregular.

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