Temporal Change of Soil Anti-scourability of Reclaimed Lands in Loess Hilly Forest Region

ZHA Xiaochun; TANG Keli

doi:11894/1005-829x.2001.21(2).8

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Temporal Change of Soil Anti-scourability of Reclaimed Lands in Loess Hilly Forest Region

- Temporal Change of Soil Anti-scourability of Reclaimed Lands in Loess Hilly Forest Region
- Bulletin of Soiland Water Conservation Vol. 20, Issue 2, Pages: 8-11(2001)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  2. 陕西师范大学旅游与环境学院,陕西,西安,710062
- 作者简介：
- 基金信息：
- DOI：11894/1005-829x.2001.21(2).8
  CLC：
- Published：2001
- 稿件说明：
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ZHA Xiaochun, TANG Keli. Temporal Change of Soil Anti-scourability of Reclaimed Lands in Loess Hilly Forest Region[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 8-11.
DOI：

ZHA Xiaochun, TANG Keli. Temporal Change of Soil Anti-scourability of Reclaimed Lands in Loess Hilly Forest Region[J]. Bulletin of Soiland Water Conservation, 2001, 20(2): 8-11. DOI： 11894/1005-829x.2001.21(2).8.

摘要

以黄土丘陵林区10a径流泥沙观测资料为基础，进行土壤抗冲试验，分析了林地及其开垦后不同年限土壤的抗冲性能。结果表明，林地具有很强的抗冲性能，一旦被开垦后，随侵蚀年限的增长，土壤的抗冲性呈减弱趋势，在3L/min流量下，土壤冲刷量从侵蚀1a的4.01g/L增大到侵蚀 10a的 25.51g/L，加剧了土壤侵蚀发展。相关分析表明，土壤的抗剪强度对抗冲性影响最大，其次为水稳性团粒和有机质含量。因此，退耕还林、恢复和重建植被，改善土壤侵蚀环境，提高土壤抗冲性，能有效地防治土壤侵蚀。

Abstract

Using the 10 year observed data of runoff and sediment in the loess hilly forest region and the field antiscourability tests

the anti-scourability in the forest-land and the reclaimed lands were analyzed. The results showed that the forest-land had the strong anti-scourability. After reclaimed

the anti-scourability of reclaimed lands had the decrease tendency from 4.01g/L to 25.51g/L in the flow of 3 L/min

which would increase the soil erosion intensity. Correlation analyses found that the soil shear strength had the biggest effect on soil anti-scourability

and then

the water stable aggregate and the organic content. So it could control effectively soil erosion to return reclaimed lands into forest or grass land

and recover or reconstruct vegetation.

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