| 摘要: |
| ［目的］为更加科学地分析区域土地利用驱动力机制、整体情况以及时空关系，支撑区域国土空间优化战略实施，文章立足于县域尺度，使用三峡库区1990年、2000年、2010年和2015年相关数据，构建土地利用变化驱动力评价指标体系。［方法］利用投影寻踪模型探寻库区土地利用变化驱动力的分异格局与驱动机制。［结果］（1）土地利用驱动力呈现出空间地域的稳定性和时间序列的动态性，且驱动机制逐渐由“生计—经济”主导驱动型转变为“多元协同”驱动型； （2）库尾重庆主城区附近及库首宜昌市区周围土地利用驱动力较强，表现为城镇用地驱动型。位于渝东北和湖北巴东、秭归、兴山的土地利用驱动力较弱，体现为林草地和水体驱动型。而其他地区情况相对复杂，表现为多种类型驱动并存。［结论］在土地利用空间优化过程中，库区应结合不同区域土地利用驱动力的作用强度开展国土资源的空间重构与优化，对重庆主城区及宜昌市区附近区（县），应当考虑土地资源的综合利用，而广大库中地区则应在生态保护前提上寻求土地资源的增值效应。 |
| 关键词: 土地利用 驱动力 驱动机制 三峡库区 投影寻踪模型 |
| DOI：10.7621/cjarrp.1005-9121.20171117 |
| 分类号: |
| 基金项目:国家自然科学基金委重大国际合作基金“城市化对山区土地利用及生态压力的影响——以重庆统筹城乡改革试验区为例”（4116140352）； 重庆市社会科学规划博士项目“土地流转带动农业转型中的价值损益及收益分配制度研究”（2014BS112）； 国家自然科学基金资助项目“多元经营主体融合下耕地集约利用的时空差异及其微观机理”（41501104）； 重庆市科委基础与前沿研究计划项目异质性农户生计资源重组对耕地流转胁迫的差异响应及反馈机制”（cstc2015jcyja80025） |
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| ASSESSMENT OF LAND USE DRIVING FORCE AND MECHANISM IN THREE GORGES RESERVOIR AREA |
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Tan Shaojun1, Shao Jingan2,3, Deng Hua4, Zhang Shichao2,3
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1.College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China;2.1.College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China;3.2. Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area, Chongqing 400047, China;4.College of Resources and Environment, Southwest University, Chongqing 400716, China
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| Abstract: |
| In order to scientifically analyze land use driving force mechanism, integral situation and time-space relation, support zone land optimism strategy, the paper constructed evaluation indexes system of land use change driving forces based on county scale, used the relative data of Three Gorges Reservoir Area in 1990, 2000, 2010 and 2015, and assessed the land use change driving forces and the variance pattern using projection pursuit model. The results showed that: (1) land use driving forces displayed the stability in spatial area and time series dynamics in reservoir area. And the driving mechanism gradually transformed to "multiple balanced synergistic" driving type from "livelihood-economic" driving mainly type; (2) land use driving force was strong in Chongqing main city and around the reservoir, which was a urban land drive type. But it was weak in northeast Chongqing, Badong, Zigui, and Xingshan in Hubei, and indicated the forest, wood and water and drive type. Reservoir area should combine with the strength of land use driving forces in different zones to reconstruct and optimize land space, Chongqing main city and urban area of Yichang should consider how to overall use land resources, and the middle area of reservoir should pay more attention to find away of increasing the values of land resources based on ecological protection. |
| Key words: land use driving forces driving mechanism Three Gorges Reservoir Area projection pursuit model |
