河道植被护坡技术的应用及评价方法

植被护坡是生态护坡中最重要一类,是植物和土壤的有机结合,除了有防洪、排涝及保持水土等护坡功能,还有一定的景观效应和生态修复功能,防止N、P及重金属等化学物质进入河道进而污染受纳水体。文章介绍了目前植被护坡技术主要的应用类型,系统地归纳了各个技术的构建方法、适用范围及技术特点,同时,文章较详细的总结了植物的作用机理及选择情况。一直以来由于缺乏对植物护坡的定量化研究及效益分析,造成建成后的植被护坡得不到更好的管理及后期维护建设,所以为了更好的管理植被护坡,为护坡的建设提供一定的理论依据及评价标准,文章提出了植被护坡构建成后的一些评价方法,包括植被护坡的稳定性评价、水土保持性评价、净化能力评价以及生物多样性评价。

Application and Evaluation Methods of Vegetation Slope Protection Techniques of Channels

Vegetation slope protection is the most important eco-protection method.Besides some features such as releasing flood,drainage,water and soil conservation,there are certain effects of landscape and ecological restoration,for preventing N,P,heavy metals and other chemicals from polluting rivers.Main application of vegetation slope protection currently comprised of construction method,application scope and technical features as well as mechanism and choice of vegetation were introduced.Because of lack of quantitative research and benefit analysis after completion of vegetation slope,it does not get better management and post-slope maintenance and construction.In order to manage vegetation slope protection much better and provide theoretical basis and evaluation criteria of slope construction,some evaluation methods for the slope were proposed,including slope stability,soil and water conservation,purifying capacity and biological diversity.