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作 者:顾卫[1] 邵琪[1] 戴泉玉[1,2] 陈述悦[1]
机构地区:[1]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [2]中国农村技术开发中心,北京100045
出 处:《应用基础与工程科学学报》2012年第5期745-758,共14页Journal of Basic Science and Engineering
基 金:国家自然科学基金面上项目"我国北方地区岩质工程创面生态恢复机理与方法的实验研究"(30870467)
摘 要:高速公路等基础设施建设产生了大量的岩质边坡.受岩性、构造等因素影响,岩质边坡不仅类型复杂,而且坡度大、无土壤、植被恢复十分困难.为了提高岩质边坡植被恢复的质量,需要根据植被恢复对生境条件的要求,对其进行类型划分,并提出与之相适应的生境再造技术.通过借鉴近年来中国北方地区公路岩质边坡生态建设工程案例,选取坡度、坡面结构、坡面平整程度、坡面风化程度等作为分类指标,从植被恢复的角度将岩质边坡划分为4种类型.即:微风化整体结构平整坡面、弱风化块状结构凹凸坡面、强风化碎裂结构平整坡面、碎石覆盖填方坡面.在此基础上,提出了每种类型岩质边坡的坡面处理模式和土壤-植被重建技术方法.这种岩质边坡的分类结果,可为坡面生态恢复设计与施工提供参考.The construction of infrastructures such as highways always results in rock-slopes. Due to different rock types and structures, the high-variety rock-slope, compared to the common slope, have specific features such as the steeper slope, the absence of soil, and the greater difficulty in revegetation. To improve the revegetation quality, it is necessary to discern the rock-slope types, and consequently to modify the corresponding habitat reconstruction technology according to the habitat condition of revegetation. By referring to the effective programs of reconstructing rock-slope ecology in north China recently, we choose the slope degree, the slope surface structure, the slope surface flatness, and the slope surface weathering as the indices to classify the rock slope into four categories. These include the slightly weathered whole-structure and even slope, the weak weathered block-structure and uneven slope, the strong weathered and broken-structure and even slope, and the broken-stone filled slope. Accordingly, we further present the processing mode and soil-vegetation reconstruction technique for each rock-slope type. The classification of rock-slope may provide reference for the eco-restoration design and implementation of slopes.
分 类 号:U418.9[交通运输工程—道路与铁道工程]
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