近25年横断山区国土空间格局与时空变化研究

横断山地提供多种生态系统服务,具有极高的生态价值,然而近年来面临人类活动强度增强所带来的国土空间可持续开发与管控挑战。利用横断山区1990年、2000年、2010年和2015年土地利用数据,分析不同海拔各种国土空间类型的数量、结构变化以及空间格局变化特征,揭示国土空间格局变化规律及影响因素。结果表明,横断山区国土空间海拔较高,垂直差异性明显,并且以生态空间为主体,生产、生活空间主要分布于东南部云南高原地区。25年间,三生空间变化加快且区域差异更突出,农业生产空间持续减少,工矿生产空间后十五年迅速增加,生活空间持续增加,生态空间波动增加。横断山区自然要素显著影响国土空间格局。西部大开发战略和退耕还林工程的实施明显带动横断山区国土空间格局变化。     

城市流动人口居住自选择中的空间权衡分析——以成都市为例

基于成都市主城区各街道的流动人口数据,分析2010-2015年流动人口规模的空间分布格局及居住空间分异程度,并从流动人口行为决策的视角选取影响变量,分析其对居住自选择的影响程度及其空间差异,据此揭示居住自选择中的空间权衡过程,探讨流动人口的空间权衡对其居住自选择和居住空间格局形成的作用。结果表明：2010-2015年,成都流动人口在主城区南部和城市中心快速增加,其集聚态势为西高东低;流动人口相较于本地户籍人口表现出一定程度的居住空间分异性;流动人口占常住人口比、居住区面积、房租、公交、企业及生活服务设施对流动人口居住自选择有明显影响,且流动人口占常住人口比、居住区面积和房租影响显著,但影响关系受流动人口空间自相关影响显著;地理加权回归结果显示不同变量对居住自选择的解释能力存在空间差异性,流动人口通过不同变量空间分布的差异性权衡不同区域,以此完成居住自选择并最终形成居住空间格局。     

1990–2015年横断山区国土空间时空变化研究（英文）

Hengduan Mountains offer land space for a variety of ecological services. However, the sustainable development and management of land space has been challenged by increased human activities in recent years. This paper performs the spatial pattern analysis of the quantitative and structural changes of various landscapes at different altitudes, and uses the land use data in 1990, 2000, 2010 and 2015 to reveal how various land patterns have changed. The results show that, within the production-living-ecological space schema, the ecological space dominates Hengduan Mountains, while the production and living space was mainly distributed in south region. During 1990–2015, the production-living-ecological spatial changes had been gradually accelerated and the regional differences had become more prominent. The agricultural production space had continuously decreased by 1132.31 km~2, and the industrial and mining production space had rapidly increased by 281.4 km~2 during 1990–2015. The living space had steadily increased, and the ecological space had increased with fluctuations. The land space pattern in Hengduan Mountains was greatly restricted by the terrain, such as altitude and slope. The implementations of China Western Development Strategy and the Returning Farmland to Forest Program had favorably promoted the changes of land spatial pattern in Hengduan Mountains.