Ding Xiaoyuan,Ye Changsheng.Eco-environmental Effects of ‘Production-Ecology-Living' Land Use Transformation and the Analysis of Terrain Gradient in Poyang Lake City Cluster[J].Research of Soil and Water Conservation,2024,31(01):315-326.[doi:10.13869/j.cnki.rswc.2024.01.017]
环鄱阳湖城市群“三生”用地转型的生态环境效应及其地形梯度分析
- Title:
- Eco-environmental Effects of ‘Production-Ecology-Living' Land Use Transformation and the Analysis of Terrain Gradient in Poyang Lake City Cluster
- 文章编号:
- 1005-3409(2024)01-0315-12
- Keywords:
- land use transition; eco-environment effects; gradient divergence; Poyang Lake Urban Cluster
- 分类号:
- F301.2; X321
- 文献标志码:
- A
- 摘要:
- [目的]准确评估“三生”用地转型对生态环境质量的影响,可为国土空间优化和区域高质量发展提供科学依据。[方法]基于环鄱阳湖城市群2000年、2010年、2020年的土地利用数据,使用土地转移矩阵、生态环境质量指数、地形分布指数等方法,分析了“三生”用地转型过程、生态环境效应及其梯度分异特征。[结果](1)2000—2020年环鄱阳湖城市群生活用地大幅增长(1 063.45 km2),生态用地持续减少(997.41 km2),生产用地总体上保持稳定,主要的用地转型模式为城镇生活用地和工矿生产用地对农业生产用地和林地生态用地的侵占。(2)时序变化上,2000—2010年,随着工矿生产用地和城乡生活用地的扩张,生态环境质量指数由1.428下降至1.424; 2010—2020年,伴随着生态用地的恢复以及城镇生活用地和工矿生产用地内部格局的不断优化,生态环境质量指数由1.424升至1.447。(3)空间分布上,整体上呈现“东西高、中部低”的空间分布格局,形成了以南昌大都市圈为中心的中部生态环境质量低值区和以宜春市、景德镇市、上饶市为中心的东西部生态环境质量高值区。(4)随着地形梯度的上升,低质量区的分布指数下降,高等级质量区逐渐呈优势分布; 2000—2020年,低质量区趋向于向高地形梯度转移,较高质量区和高质量区的下移趋势明显。[结论]20年间研究区的生态环境质量整体向好,空间分布差异较大。土地利用转型导致了用地属性及其空间格局的双重变化,建议在布局各类用地时,既要注重对生产、生活用地的“总量控制”,又要保证生态用地的完整性和连通性。
- Abstract:
- [Objective] Accurate evaluation of the impact of ‘production-ecology-living' land use transformation on eco-environmental quality can provide a scientific foundation for national land optimization and regional high-quality development. [Methods] Based on the land use data of Poyang Lake city cluster in 2000, 2010 and 2020, the analysis of land use transformation, eco-environmental effects and its gradient divergence characteristics was carried out through land transfer matrix, eco-environmental quality index and terrain distribution index. [Results](1)From 2000 to 2010, the living land had grown significantly(1 063.45 km2), the ecological land continued to shrink(997.41 km2), the productive land was generally stable. The main land transformation pattern was the encroachment of urban living land and industrial and mining productive land on agricultural productive land and forest ecological land.(2)From 2000 to 2010, with the expansion of industrial and mining productive land and urban and rural living land, the eco-environmental quality index fell from 1.428 to 1.424. from 2010 to 2020, along with the restoration of ecological land and the optimization of the pattern of urban living land and industrial and mining productive land, the eco-environmental quality index rose from 1.424 to 1.447.(3)The overall spatial distribution pattern was ‘high in the east and west and low in the middle', forming the central eco-environmental quality low value area centered on Nanchang metropolitan area, and the east and west high value area centered on Yichun, Jingdezhen and Shangrao.(4)With the rise of topographic gradient, the distribution index of low-quality area declined, and the high-quality area showed a dominant distribution. From 2000 to 2020, low-quality area tended to shift to higher topographic gradients, and the downward trend of higher-quality area and high-quality area was evident. [Conclusion] The overall ecological quality of the study area had improved over the twenty years, with large differences in spatial distribution. The land use transformation had led to a double change in land use attribute and their spatial pattern. It is recommended that when laying out various types of land, it is necessary to pay attention to the ‘total control' of production and living land, but also to ensure the integrity and connectivity of ecological space.
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备注/Memo
收稿日期:2022-11-01 修回日期:2022-11-26
资助项目:国家自然科学基金“环鄱阳湖城市群城镇化生态风险综合评价与预警研究”(42061041)
第一作者:丁孝媛(1997—),女,河南信阳人,硕士研究生,主要从事土地利用变化与规划。E-mail:dingxy1118@163.com
通信作者:叶长盛(1977—),男,江西临川人,博士,教授,研究方向城乡发展、土地资源利用与保护。E-mail:ycs519@163.com