Problems and Solutions about Land Use of Different Karst Environments in Southern China

• 作者: Zhangxiong ZHU Zhilin WEN Zhiwei ZHANG
• 来源期刊: 亚洲农业研究：英文版
• 学科: 地球科学
• 关键词: LAND use TYPES of KARST environments KARST ROCK de
• 年，卷（期）: 2013,（10）
• 页码范围: 51-55
• 页数: 5页
• 分类号: X171

摘要

This paper is aimed to analyze the current situation and problems about land use of various karst environments via field survey,documentation and comparison methods,and to make reasonable recommendations about land use and management for different karst types in a bid to provide theoretical and practical basis for optimization of karst land use and the comprehensive control of karst rock desertification.The results show that,①as the bare karst areas are lack of water and soil and highly vulnerable to droughts and floods,land utilization in such areas should follow the principles of soil and water conservation and ecological restoration,emphasize both the ecological benefit and the economic benefits and reasonably configure the land resources to achieve virtuous circle;②in covered karst areas,the most important task is to take measures to prevent the appearance of secondary karst rock desertification,water exhaustion and karst collapse;③the buried karst areas shall mainly focus on prevention of overlaying sand shale collapse,and possible pollution of deep karst water and the surface land resulted from exploration and exploitation of oil and gas and geothermal water.④The final conclusion is that features and problems of land utilization of the three karst types are different from each other,and that the general principle for land use in karst regions shall be based on the local conditions.