黄土丘陵区近自然水土保持复式技术研究

Study on Compound Techniques of Near Nature Soil and Water Conservation in Loess Hilly-gully Region

该项目应用近自然修复理论,以解决梯田地埂重力侵蚀、道路水土流失、防护林树种单一和功能退化、人工草场二次垦殖、经济林水保效益差等目前水土保持存在的主要技术问题为突破口,把山区土地划分为"经济开发地"和"环境保护地"两大类型进行接近自然的复式配置,设计出"地埂接近自然休止角的农果草梯田复式生态经济技术系统、适土适树复式防护林技术系统、林(果)草水相结合防止生产道路侵蚀与集水窖灌的复式道路技术系统"进行了6年试验示范,得出适合黄土丘陵区的近自然水土保持技术体系模型,为黄土丘陵区治理水土流失和山川秀美建设提供了技术样板。

The authors did experiments and theory studies on the environment protection and rehabilitation aimed at solving problems such as terrace edge collapse, road soil and water loss, and problems in shelter woods land such as simple species and weak function ability, and artificial grass land refarming, economic woods with badly soil and water loss, etc in loess hillygully region. Based on theory studies authors take those exist problems into main research work and as the breakthrough point and they divide land use into two main types as 'economic development land' and 'environment conservation land' and then conducted the land management by the near nature scheme. Though 6 years experimental and demonstration studies the near nature soil and water conservation technique system was designed,including'croporchardgrass terrace compound ecoeconomy techsystem with terrace edge near the cease angle', 'compound protection trees system that need to fit the local environment by selecting tree species', compound road protection system with rational trees (fruit trees)grasswater combination and together with water cellor harvesting to prevent road erosion. The study recommends the rational near nature soil and water conservation technique system for loss hillygully region that can be used as a technique model to prevent soil and water loess and then build beautiful environment in the region.