保持县域边界完整性的中国生态区划方案

论文采用生态大区-生态地区-生态区三级区划系统,根据气候、地形地貌、生态系统特点等特征的定量与定性指标,采用自上而下逐级划分,将全国划分为了4个生态大区(东北部湿润半湿润生态大区、北部干旱半干旱生态大区、南部湿润生态大区和青藏高原生态大区)、11个生态地区和63个生态区。此一保持县域边界完整性的生态区划方案可为我国生态环境保护和建设、生态环境监测与评价提供依据,命名方面更加注重惯用名称的应用,边界划分保持县域完整性,以便使生态环境的数据能与以县为行政单元统计的社会经济数据更好地融合,有利于生态管理的实施,可为明晰各区域的生态功能定位、保障区域生态安全、国家或区域战略决策、生态资源保育、生态环境保护与建设等提供科学依据。

China’s County-Scale Ecological Regionalization

Three-level zoning system of domain-ecoregion-ecodistrict and top-down division method were adopted,and four domains(i.e.,the northeast humid and semi-humid domain,the northern arid and semi-arid domain,the southern humid domain and the Tibet Plateau domain),11 ecoregions and 63 ecodistricts were identified in China according to quantitative and qualitative indicators(e.g.,climate,topography,ecosystem characteristics).Because this scheme pays more attention to the application of the usual name in ecoregion naming,and keeps the integrity of county border,it not only provides scientific basis for protecting,constructing and evaluating national eco-environment,but also makes eco-environmental data better integrated with socio-economic data at county scale,hence leading to more effective ecosystem management,recognizing the position of regional ecological functions and guaranteeing regional eco-security,so as to provide a scientific basis for strategic decision-making,ecological resources conservation,eco-environmental protection and construction at national or regional scale.