Zheng Fenli,Tang Keli,Cai Qing,et al.Impact of Vegetation Being Destroyed and Reclaimed on Rill Erosion of the sloping Lands[J].Research of Soil and Water Conservation,1993,(01):50-53.
人为破坏植被开垦耕种对坡面细沟侵蚀的影响
- Title:
- Impact of Vegetation Being Destroyed and Reclaimed on Rill Erosion of the sloping Lands
- Keywords:
- the Ziwuling forest region; forest land being reclaimed; rill erosion; erosion of rill head back-ward
- 摘要:
- 作者利用野外调查资料和人工降雨资料研究了人为破坏植被开垦地耕种对细沟侵蚀的影响。所得结论为人为破坏植被开垦地耕种坡面细沟侵蚀急剧发展。细沟宽为5～30cm，深为5～15cm，此细沟深度值小于陕北安塞一带坡面上的细沟深；细沟侵蚀量为2200～6700t/（km2·a），也小于安塞一带坡面上的细沟侵蚀量。在片蚀+细沟侵蚀带，一旦坡面上发生细沟侵蚀，则随着坡面土壤侵蚀的继续进行，细沟侵蚀占主导地位，而细沟侵蚀方式以沟头溯源侵蚀为主。降雨和地形因子对细沟侵蚀的影响非常明显。
- Abstract:
- Effect of vegetation being destroyed and reclaimed on rill erosion on the slope land has been reseached in this paper,using field investigation and simulated rainfall data,It is shown that after vegetation being destroyed and cultivated,rill erosion on the slope land rapidly develops,rill width is 5～30cm,rill depth is 5～15cm,rill erosion amount is 2 200～6700t/km2·a,The value of rill depth and rill erosion amount are smaller than those in the hilly-gullied area of loess plateau,Once occuring rill erosion in the slope land,rill erosion occupies dominant position as rainfall continues developing,Erosion of rill head back-ward is a main erosion way in the process of rill erosion development,Effect of rainfall and topography factors on rill erosion in very obvi-ous.
参考文献/References:
[1] 郑粉莉等.坡耕地细沟侵蚀的发生发展和防治途径的探讨.水土保持学报、1987(1)
[2] 郑粉莉等.坡拼地细沟侵蚀影响因素研究.土壤学报、1989(2)
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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