基于CLUE-S模型和生态安全格局的石羊河流域土地利用优化配置

发布时间：2018-05-24 11:13

本文选题：土地利用优化 + CLUE-S模型　；参考：《武汉大学学报(信息科学版)》2017年09期

【摘要】：以典型干旱内陆河流域石羊河为例,将GIS技术、最小累积阻力(minimum cumulative resistance,MCR)模型和CLUE-S(conversion of land use and its effects at small regional extent)模型应用到该流域土地利用优化配置研究中。通过景观安全格局理论构建土地利用生态安全格局,基于土地利用空间分布和驱动因子的定量关系,提出一种基于生态安全格局的土地利用情景模拟方法,借助1986年、2000年和2014年3期土地利用数据对石羊河流域生态安全格局情景、耕地保护情景和自然发展情景3种模式下2030年的土地利用结构和布局进行了优化配置,并对优化配置结果进行比较分析。结果表明,在生态安全情景下耕地有所减少,林地、草地和水域有较明显增加;耕地保护情景以土地开发和整治及宅基地还耕为主要目标,科学有效控制了建设用地规模,大力开发未利用地潜力;自然发展情景综合考虑了目前发展情况和宏观政策指导下各土地利用类型的数量及空间结构发展情况。综合考虑石羊河流域社会经济、生态及耕地保护等多方面的因素,研究结果认为耕地保护情景更为合理,其它两种情景可为耕地保护情景进行补充和局部修正。该结果可为石羊河流域土地利用总体规划和生态保护提供参考。
[Abstract]:Taking Shiyang River in typical arid inland river basin as an example, the GIS technique, minimum cumulative resistance minimum cumulative resilience model and CLUE-S(conversion of land use and its effects at small regional extent) model are applied to the study of optimal allocation of land use in this basin. Based on the quantitative relationship between spatial distribution of land use and driving factors, a land use scenario simulation method based on ecological security pattern is proposed. Based on the land use data of 1986, 2000 and 2014, the land use structure and distribution of Shiyang River basin in 2030 were optimized under the three models of ecological security pattern, cultivated land protection scenario and natural development scenario. The results of optimal configuration are compared and analyzed. The results showed that the cultivated land decreased, the woodland, grassland and water area increased obviously under the ecological security situation, and the cultivated land protection scenario was aimed at land development and regulation and homestead tillage, and the scale of construction land was controlled scientifically and effectively. Under the guidance of present development situation and macro policy, the quantity and spatial structure of each land use type are considered. Considering many factors such as social economy, ecology and cultivated land protection in Shiyang River Basin, the results show that the scenario of cultivated land protection is more reasonable, and the other two scenarios can be used to supplement and modify the situation of cultivated land protection. The results can provide a reference for the overall land use planning and ecological protection in Shiyang River Basin.
【作者单位】：兰州大学资源环境学院;西北师范大学地理与环境科学学院;中国科学院寒区旱区环境与工程研究所;兰州城市学院城市经济与旅游文化学院;
【基金】：国家自然科学基金(41261104,71263045,41471163) 甘肃省自然科学基金(1506RJZA129) 甘肃省高等学校科研项目(2014A-015)~~
【分类号】：F301.2

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