江西省生态用地保护重要性评价研究

Importance assessment of ecological land protection in Jiangxi Province

以数值法作为分析方法,与生态系统服务功能理论相结合,从生态环境、生态敏感性、气候、土壤和地貌5方面建立江西省生态用地保护重要性评价指标体系,在GIS技术的支持下,研究其生态保护重要性和生态用地的空间分布.根据生态用地保护重要性将其划分为禁止开发生态用地、限制开发生态用地和可适当开发生态用地3类.研究表明,江西省总生态用地占全省土地总面积的50.3%,禁止开发生态用地占全省比例为10.3%;11个地市中,南昌市的禁止开发生态用地比重最大,为35.8%;鄱阳湖区禁止开发生态用地比重为17.0%.

Combining the numerical analysis method and the ecosystem services function theory,an assessment system for ecological land protection was established.Five dimensions of characteristics were selected,including eco-environmental quality,ecological sensitivity,climate condition,soil condition,and geomorphology.The ecological land was classified into three sub-categories：land of forbidden development,land of restricted development,and land of optimized development.Based on the importance assessment system for ecological land protection,GIS technique was adopted to analyze the importance and spatial distribution of ecological land in Jiangxi Province.Area of ecological land was 17223.5km2,accounting for 50.3% of the total land area.The percentage of ecological land that should be prohibited for any development activity added up to 10.3%.Among all the 11 major cities in Jiangxi Province,Nanchang City had the greatest （35.8%） percentage of ecological land that should be prohibited for any development activity.In Poyang Lake region,the percentage of ecological land that should be prohibited for any development activity was 17.0%.