Hydrologic Benefit of Reformed Low Beneficial Protection Forest

Wang Xingzhong

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Hydrologic Benefit of Reformed Low Beneficial Protection Forest

- Hydrologic Benefit of Reformed Low Beneficial Protection Forest
- Bulletin of Soiland Water Conservation Vol. 16, Issue 4, Pages: 1-7(1997)
- 作者机构：
  
  重庆市林业科学研究所,重庆市,630036
- 作者简介：
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- Published：1997
- 稿件说明：
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Wang Xingzhong. Hydrologic Benefit of Reformed Low Beneficial Protection Forest[J]. Bulletin of Soiland Water Conservation, 1997, 16(4): 1-7.
DOI：

Wang Xingzhong. Hydrologic Benefit of Reformed Low Beneficial Protection Forest[J]. Bulletin of Soiland Water Conservation, 1997, 16(4): 1-7. DOI：

摘要

通过对华蓥山低效防护林改造试验研究及水文效益观测分析得出：低效防护林改造的水文效益明显。实施改造5年后，各种改造方式的土壤有效水贮存能力较无林地提高14．0％～38．0％；在年降雨量消耗分配中，土壤贮水量占55．5％，地表径流仅占1．8％，渗透径流占8.7％，壤中径流占23．7％；全林年径流系数为0．3415，比北碚水文站测得的多年平均径流系数减少12.48％，丰水期径流系数比北蔬站减少22．52％，而非丰水期则增加20．35％，故低效防护林改造具有很高的贮水、减洪和调节河川径流量的效益。

Abstract

The benefit of a test reformed low beneficial protection forest established on the Huaying mountain has been observed and appraised. The result shows that the hydrologic benefit of reformed low beneficial protection forest is obvious. Having been implemented reformation for five years

the available soil water for various re formative way has increased by 14. 0%～38. 0% over the unstocked forest land. In the portioning of annual precipitation

the storage of soil water was 55. 5%

the surface runoff was merely 1. 8%

the permeant runoff was 8. 7% and the runoff in soil was 23. 7%

the annual runoff coefficient in whole woods was 0. 341 5

it has decreased by 12. 48% under the annual average runoff coefficient determined by Beibei Hydrology Station. The runoff coefficient in the plentiful water period has reduced by 22. 52% as compared with Beibei Station

but in non-plentiful water period

it has heightened by 20. 35%. Therefore

reforming low beneficial protection forest has a very high benefit of storing water

decreasing flood and regulating discharge in rivers.

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