[1]程根伟,石培礼,田雨,等.西南山地森林变化对洪水频率影响的模拟[J].山地学报,2011,(05):561.
　CHENG Genwei,SHI Peili,TIAN Yu.Simulation of Forest Impacts to the Flood Frequency Characteristics of Mountainous River in Southwestern China[J].Mountain Research,2011,(05):561.
点击复制

西南山地森林变化对洪水频率影响的模拟()

分享到：

《山地学报》[ISSN:1008-2186/CN:51-1516]

Title:: Simulation of Forest Impacts to the Flood Frequency Characteristics of Mountainous River in Southwestern China

作者:: 程根伟;石培礼;田雨;; 1.中国科学院水利部成都山地灾害与环境研究所,四川成都 610041; 　　
2.中国科学院地理科学与资源研究所，北京 100101

Author(s):: CHENG Genwei; SHI Peili; TIAN Yu; 1. Institute of Mountain Hazards & Environment, CAS, Chengdu 610041,China;
2.Institute of Geography Science and Resources, CAS, Beijing 100101,China

摘要:: 森林砍伐和恢复改变了流域洪水形成条件,将影响河流洪水的总量与洪峰形态,但是选择合适的技术来进行准确的分析评价仍然是个难题。采用流域分布式水文数学模型(SWAT)对四川梭磨河径流过程进行模拟,得到不同森林覆被率的洪水过程和洪峰的频率分布。针对各种森林情境下的洪水过程模拟,发现对于中小尺度流域,良好的森林覆被可以减小洪水大小30%～40%,而且其中森林覆被率在35%～40%之内具有最显著的滞蓄洪效益,它与完全的森林覆被对在洪水的影响差异仅在5%以内,这对于我国西南生态保护与恢复工程的实施决策具有重要参考价值。

Abstract:: Forest logging or reforestation will singnificantly influent the generation condition of hydrographes. The flood peaks and total volume may change with the variation of forest coverage. But it is hard to selecte a proper method to evaluate this impact quantitatively. In the paper a distributed hydrological mathematical model (SWAT) is used to simulate the hydrographies of the Shuomo River, southwestern China. The flood frequency curves are derived from the modeled flood events by this model. Based on the frequency analyses of flood events for different forest coverages, one can find that the reducing rate of flood peak is about 35% at the most advantaged forest condition. The main part of flood reducing effect is come down with forest ratio in 30%-40%. It has only 5% difference in flood reducing effect comparing with the most possible forest coverage (100%). These results mean that the optimal forest ratio for southwestern China is between 30%-40%. This criterion can be application in the planning of ecological rehabilitation engineering.

[1]沙玉坤,程根伟,李卫朋,等.森林水文作用的流域尺度效应及其评价[J].山地学报,2013,(05):513.
　SHA Yukun,CHENG Genwei,LI Weipeng.The Impacts and Evaluations of Catchment Scales on Forest Hydrology[J].Mountain Research,2013,(05):513.
[2]程根伟.从森林水文作用看长江上游防护林工程[J].山地学报,1993,(01):61.
[3]程根伟,Hetherington E.太平洋西海岸森林砍伐对洪水特征的影响[J].山地学报,1997,(03):167.

备注/Memo:: 收稿日期(Received date)：2011-05-15。
基金项目（Foundation item）：国家自然科学
基金项目 (31070405)资助。\[National Nature Science Foundation of China: 31070405.\]
作者简介（Biography）：程根伟，男，博士，研究员，主要从事水文学与生态环境研究。\[Cheng Genwei (1956-), male, research professor, engaged in the research on hydrology and ecology. \] E-mail: gwcheng@imde.ac.cn

更新日期/Last Update: 1900-01-01