基于GIS技术的县域生态用地重要性评价——以泸水县为例

发布时间：2018-08-12 13:12

【摘要】：[目的]生态用地是构建区域生态安全格局的基础,对区域可持续发展具有重要意义。结合国家实施的"全国主体功能区规划"、"多规合一"方案,在总结前人相关研究成果的基础上,对生态用地进行概念界定与分类;在分类基础上以云南省泸水县为例,选取地质灾害规避、土地防护、水资源安全、公路防护带建设、生物多样性保护5个指标因子进行生态用地重要性评价。[方法]利用GIS空间分析方法,叠加5个因子图层得到区域生态用地重要性分级及空间分布。[结果]提出增加生态用地为土地利用类型,将生态用地分为13个二级地类,调整后的土地利用类型为8个一级地类和46个二级地类;且二级地类在保持与原相关分类一致的前提下,重新归类。更好地与原分类进行了衔接,分类可实施性较强。评价结果分为4个等级。[结论]结果符合泸水县生态用地功能特征,在土地分类实践中具有一定的理论意义,在区域用地规划中有一定的参考性。
[Abstract]:[objective] Ecological land is the foundation of constructing regional ecological security pattern, which is of great significance to regional sustainable development. Combined with the "National main function area Planning" and the "Integration of multiple rules" program implemented by the state, the concept and classification of ecological land are defined and classified on the basis of summarizing previous relevant research results, and the Lushui County of Yunnan Province is taken as an example on the basis of classification. Five index factors were selected to evaluate the importance of ecological land use, such as geological hazard avoidance, land protection, water resources safety, highway protection belt construction and biodiversity protection. [methods] using GIS spatial analysis method, the importance classification and spatial distribution of regional ecological land use were obtained by adding five factor layers. [results] it was suggested that the increase of ecological land use should be the land use type, and the ecological land use would be divided into 13 second-class land types, and the adjusted land use types would be 8 first-class and 46 second-class land types. And the secondary ground category is reclassified on the premise of keeping consistent with the original related classification. Better link with the original classification, the classification is more implementable. The evaluation results were divided into four grades. [conclusion] the results accord with the functional characteristics of ecological land use in Lushui County, have certain theoretical significance in land classification practice, and have certain reference value in regional land use planning.
【作者单位】：云南大学资源环境与地球科学学院云南省地理研究所;海南大学热带农林学院;
【基金】：国家自然科学基金项目“基于3S技术的怒江峡谷农业产业结构调整与生态修复互动研究”(41161070) 云南省科技惠民项目“云南怒江流域精细化地质灾害气象预警系统研究及示范”(2013CA014) 云南省自然科学基金项目“怒江州产业结构变化及其生态环境效应研究”(2013FZ001)
【分类号】：F301.2;P208

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