摘要
通过对松辽流域山地丘陵地区水蚀图斑的调查,运用线性模型理论,研究了该流域山地丘陵地区水蚀灾害的影响因素,分析了流域内下垫面诸因素对土壤水蚀量的影响程度,并找出了其主导因素。研究结果表明:在影响土壤水蚀量下垫面的诸因子中,母岩特征、土壤类型、地貌类型、坡度、植被覆盖度与水蚀灾害的关系达显著水平,其中植被覆盖度及坡度是最显著的影响因子,起着主导作用。防止土壤水蚀应以生物措施为主,增加植被覆盖度是最有效的措施。坡度也是影响水蚀的关键因子,受人为活动影响较大的平原、台地、丘陵及低山区,应是防治土壤水蚀的重点地区。
An experiment was conducted to study the influencing factors of water erosion disaster in the mountainous areas and hilly lands of Songhua and Liaohe river watershed by water erosion land parcel and linear model theory. Effect of each underlying surface factor in the watershed on soil water erosion was analysed, and the dominant factors were found out. Resuits showed that among the factors in underlying surface, parent rock feature, soil type, landform type, slope and vegetation coverage all significantly correlated with water erosion disaster, of which slope and vegetation coverage are dominant factors. Priority should be given to biological measures in preventing soil water erosion, and the most effective measure is to increase vegetation coverage. Slope is another key factor, and plain, tableland, hill and low mountainous areas where are greatly influenced by human activities should be regard as the key areas in the control of water erosion.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2006年第2期54-56,共3页
Journal of Northeast Forestry University
基金
吉林省自然科学基金项目(20000561)。
关键词
松辽流域
水蚀
防治对策
Songhua and Liaohe river watershed
Water erosion
Control countermeasures
