广西岩溶区水土保持示范区模式比较研究

我国西南岩溶区水土流失及其引发的石漠化问题已经非常突出,西南岩溶石山区的水土保持和石漠化治理已成为岩溶区生态环境问题研究的热点。以广西岩溶石山区水土保持和生态恢复已经取得显著成效的果化、弄拉和环江三个示范区为研究对象,从工程措施、林草措施和农艺措施三个方面分别进行了阐述,比较了各示范区这三大水土保持措施的共性、特色和所取得的生态经济效益。果化、弄拉和环江的水土保持成功模式表明,合理地规划和布局岩溶区水土保持宏观发展体系,因地制宜地运用水土保持三大措施,建立立体化生态农业,发展适宜当地环境的作物、水果和药材,以科学技术服务生态建设和土地改良,可以很好地发挥水土保持三大效益,并改善生态环境。

Comparison of Pilot Area Modes of Soil and Water Conservation of Karst Region in Guangxi

The problems of soil erosion of karst area and induced rocky desertification in the southwest China have been very prominent and soil and water conservation and rocky desertification treatment of karst area in the southwest China have become a hotspot of study on ecological and environmental issues of the area.The paper elaborated the measures from three aspects of engineering,trees and grass and agriculture respectively and compared the similarity,characteristic and achieved ecological and economic benefits of the three major measures of soil and water conservation used in each pilot area,by taking three pilot areas of Guohua,Nongla and Huanjiang where have achieved remarkable effects on soil and water conservation and ecological rehabilitation in karst area in Guangxi as an object of study.The successful mode on soil and water conservation of the above pilot areas shows that rational planning and layout of macro development system of soil and water conservation of karst area,taking the three major measures of soil and water conservation that suit to local circumstances,establishing stereoscopic ecological agriculture,developing the crops,fruits and medical herb that suite to local conditions and providing scientific and technical services to ecological building and land improvement can effectively play the three major benefits of soil and water conservation and improve ecological environment.