Zheng Fenli,Tang Keli,Wang Wenlong,et al.Study on Soil Erosion Properties in the Forest Lands and Reclaimed lands[J].Research of Soil and Water Conservation,1993,(01):29-36.
子午岭林区林地和开垦地土壤侵蚀特征研究
- Title:
- Study on Soil Erosion Properties in the Forest Lands and Reclaimed lands
- Keywords:
- the Ziwuling forest area; Forest-lands and reclaimed lauds; soil erosion properties; rainfall erosion index
- 摘要:
- 利用大型坡面径流场和小流域的观测资料研究了子午岭林区林地开垦前后土壤侵蚀特征，其结果为林地土壤侵蚀很轻微，侵蚀强度小于15t/（km2·a），径流模数小于2400m3/（km2·a）。地形和降雨特征对土壤侵蚀的影响不甚明显，植被和土壤成为影响土壤侵蚀的决定性因子。而当林地被开垦后，土壤侵蚀由自然植被覆盖下的自然侵蚀转变为人为加速侵蚀，侵蚀模数达1000t/（km2·a）以上，径流模数在27480m3/（km2·a）以上。降雨和地形特征对土壤侵蚀的影响非常明显。土壤加速侵蚀量与10min 或15min 最大雨强（Ⅰ10或Ⅰ15）的关系最为密切，坡面汇流增加，谷坡侵蚀产沙系数为27.7%。
- Abstract:
- Soil erosion properties of forest-lands and reclaimed lands have been researched in this paper,using,observed data of large slope runoff plots and small watershes,The results have shown that soil erosion intensit in the forest land is very slight,soil erosion modulus is less than 15t/km2·a,runoff modulus is loss than 2400m3/km2·a.The factors of vegetation and soil are decided factors of affections soft erosion,but effect of rainfall and topography factors on soil erosion is not obvious.After vegetation being destroyed and reclaimed,natural erosion is being changed into accelerated erosion,erosion modulus and runoff moduius are above 10000t/km2·a and 27 480m3/km2·a inspectively.Effect of factors of rainfall and topography on soil erosion is obviousl.soil erosion modulus on the valley is two times that on hilly slope.And soil erosion amount of man-made accelerated erosion is very close relation to Ⅰ10 or Ⅰ15.It is 27.7% that in-creasing sediment of the valley slope erosion of coming from runoff and sediment of hilly slope.
参考文献/References:
[1] 米登山等.近几年子午岭森林破坏情况及其影响.水土保持通报, 1982(5)
[2] 唐克丽等.黄土高原人为加速侵蚀与全球变化.水土保持学报, 1992(2)
[3] 查轩等.植被对土壤特性及土壤侵蚀的影响研究.水土保持学报, 1992(2)
相似文献/References:
[1]唐克丽,郑粉莉,张科利,等.子午岭林区土壤侵蚀与生态环境关系的研究内容和方法[J].水土保持研究,1993,(01):3.
Tang Keli,Zheng Fengli,Zhang Keli,et al.Research Subjects and Methods of Relationship between Soil Erosion and Eco-Environment in the Ziwuling Forest Area[J].Research of Soil and Water Conservation,1993,(01):3.
[2]唐克丽,张科利,郑粉莉,等.子午岭林区自然侵蚀和人为加速侵蚀剖析[J].水土保持研究,1993,(01):17.
Tang Keli,Zhang Keli,Zheng Fenli,et al.Analysing on Natural Erosion and Man-made Accelerared Erosion in the Ziwuling Forest Area[J].Research of Soil and Water Conservation,1993,(01):17.
[3]郑粉莉,唐克丽,蔡庆,等.人为破坏植被开垦耕种对坡面细沟侵蚀的影响[J].水土保持研究,1993,(01):50.
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.
[4]郑粉莉,张科利,唐克丽,等.植被破坏与恢复对坡面浅沟侵蚀影响的研究[J].水土保持研究,1993,(01):54.
Zheng Fenli,Zhang Keli,Tang Keli,et al.Impact of Vegetation Destruction and Restoration on Shallow Gully Erosion[J].Research of Soil and Water Conservation,1993,(01):54.
[5]郑粉莉,唐克丽,蔡庆,等.子午岭林区林冠对降雨截留作用的研究[J].水土保持研究,1993,(01):64.
Zheng Fenli,Tang Keli,Cai Qing,et al.Study on Function of Crown Canopy Intercepting Rainfall in the Ziwuling Region[J].Research of Soil and Water Conservation,1993,(01):64.
[6]王斌科,唐克丽.子午岭林区的植被破坏与侵蚀产沙特点[J].水土保持研究,1993,(01):68.
Wang Binke,Tang Keli.Characteristics of Vegetation Destruction by Human Beingand Soil Erosion and Yield Sediment in Ziwuling Forest Area[J].Research of Soil and Water Conservation,1993,(01):68.
[7]焦菊英,刘元保,唐克丽.人为活动对子午岭林区和非林区径流泥沙的影响[J].水土保持研究,1993,(01):94.
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.
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