Jiao Juying,Liu Yuanbao,Tang Keli.Effect of Human’s Activities on Runoff and Sediment in Forest Area and Non-forest Area of the Ziwulign Region[J].Research of Soil and Water Conservation,1993,(01):94-98.
人为活动对子午岭林区和非林区径流泥沙的影响
- Title:
- Effect of Human’s Activities on Runoff and Sediment in Forest Area and Non-forest Area of the Ziwulign Region
- 摘要:
- 通过对子午林区和非林区径流泥沙资料的分析表明，毁林开荒等人为破坏活动的严重时期直观地反映在径流泥沙年际变化曲线上。植被破坏后，增强了径流泥沙与降雨的相关性，削弱了植被对降雨的抵抗能力，径流泥沙增大，其增加幅度林区比非林区大。植被是加速或控制土壤侵蚀的敏感因子。
- Abstract:
- Runoff and sediment data of forest area and non-forest area in the Ziwuling region has been analysed in this paper.The results show that periods of forest being seriously destroyed and reclaimed by human being has showed curves of runoff and sediment change in year.After vegetation being destroyed,correlative relation between runoff and sediment and rainfall is in-creased,but function of forest resisting in rainfall runoff and sediment is weakened.Increaseing value of runoff and sediment in the forest area is bigger than that of non-forest area.Vegetation is a key factor of affecting on soil accelerated erosion.
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备注/Memo
收稿日期:1993-3-1
基金项目:国家自然科学基金资助重大项目