| 岷江上游森林水文效应研究 |
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| 引用本文： | 陈祖明,任守贤.岷江上游森林水文效应研究[J].地理学报,1992,47(1):49-57. |
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| 作者姓名： | 陈祖明 任守贤 |
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| 作者单位： | 成都科技大学水利系
(陈祖明)，成都科技大学水利系(任守贤) |
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| 摘 要： | 本文提出了用一般性流域水文模型研究森林水文效应的途径。得出在岷江上游地区随着覆盖率的下降年径流量减少、径流成份改变、年风分配更趋不均匀和洪峰流量增大的结论。在此基础上，预测了岷江上游地区水源涵养林建设的水文效益与前景。
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| 关 键 词： | 森林水文效应 流域水文模型 岷江 森林覆盖率 年径流量 |
A STUDY ON HYDROLOGICAL EFFECTS OF FOREST IN THE UPSTREAM MINJIANG RIVER |
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| Chen Zuming Ren Shouxian.A STUDY ON HYDROLOGICAL EFFECTS OF FOREST IN THE UPSTREAM MINJIANG RIVER[J].Acta Geographica Sinica,1992,47(1):49-57. |
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| Authors: | Chen Zuming Ren Shouxian |
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| Abstract: | The hydrologic catchment model with certainty can be used to quantify the hydrologic utility of a large area of forests in a short time by using the extant historic records of the hydrometric network's observations. It is an encouroging new approach for further development of the utility of forest hydrology.
The vertical scope of forests conducting is focused on the top level of the forest to the critical level of the forest's roots. It influences on the change of runoff, distribution of runoff in a year and the flood magnitude through diversing the evapotranspirtion and the groups of water sources. Within the researched region, he forest covering ratio decreased from 22% to 16%, annual evapotranspiration capacity increased by 20-26%, annual runoff reduced by 7.3%, sub'soil water added by 153% and its portion in runoff increased by 7.8%, the portion of ground water in runoff reduced by 7.8% and the maximium annual peak discharge increased by 14.4%. If the ratio of the forest recovers to 45%, the annual runoff will be enlarged by 17.9%, the maximium annual peak discharge will be receded by 22.6%. Therefore, the benefit and the safe-guard against damage are extremely manifested.
It is widely accepted that there are numerous factors without the feature of a specific region in the enormous number of factors, which imposed influnces on the evapotrans-piration and the characteristic of the yield and afflux, therefore, there is an individual utility of the forest hydrology for a specific forest region. |
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| Keywords: | The utility of the forest hydrology The hydrologic catchment model Runoff component |
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