小集水区生物多样性工程之设计

依据国际生物多样性公约,世界各国从1992年以来,在环境保育利用与经营管理上,无不以生物多样性之规划设计为考虑。因此,为了集水区的水土资源保育与生态永续经营之长远目的,台湾特殊地之泥岩地区刺竹林之林相更新或竹林地复层植被之建立,有其必要性与迫切性。然有关泥岩地区之相关试验研究虽多,但目前对于持续扩大之自然裸坡则尚无良好对策与方法。以小集水区整体环境重建构想,提出小集水区生物多样性之设计,并配合土木工程之生态复育工法。经调查研究结果之泥岩坡面裸化、冲淤过程以及植被坡面保育功能等适宜性整治有所更深入了解与助益,且可对持续扩张之泥岩裸露地加以控制,提供一套具体可行之生态复育方式。经多年之调查结果,已显现其生物多样性效果,而就地取材的连续性拦阻及生态环境之营造,以及改善当地微气候之生物多样性营造方式,并可在小集水区进行区域生态足迹追踪,进而达到可预期之生态需求。

The Design for Biodiversity Engineering Methods in the Small Watershed

To improve their effectiveness of soil erosion control and consider sustainable management for ecological environment,the bamboo forest should be revegeted or have its vegetation structure changed.The serious erosion and damage happened in mudstone area were always resulted from characteristically abominable geological conditions,local climate types and abuse of land development.The datum show that the soil at this area is the most and the easiest erosive in Taiwan.Sediment yield in rivers of this area consequently increases and has reached the highest rank comparing with main rivers in the world.In order to solve mudstone problems of biodiversity and soil erosion,this study intend to collect all the research papers and revegetation methods that had done in the natural and cutted slope of mudstone areas during the past years,and assess their effectiveness and suitability in four years' period.Therefore,this study will integrate vegetation engineering,forest aspect renovation,ecological restoration,eco-technology and biodiversity engineering,considering the ecology management as a whole.This plan will set up a small watershed,to study the control of soil bareness,sediment pollution control,ecological restoration and ecological footprint methods of the mudstone area.