| 基于生态系统服务供需比与土地利用强度阈值识别的生态管理分区 |
| 摘要点击 589 全文点击 8 投稿时间：2025-04-03 修订日期：2025-05-29 |
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| 中文关键词 生态系统服务（ESs） 土地利用强度（LUI） IM模型 约束线 阈值 生态管理分区 |
| 英文关键词 ecosystem services（ESs） land use intensity（LUI） IM model constraint line threshold ecological management zoning |
| DOI 10.13227/j.hjkx.202504050 |
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| 中文摘要 |
| 研究生态系统服务供需比与土地利用强度的关系并进行生态管理分区，对于推进精准生态环境管理发挥着重要意义. 以滇中城市群为例，通过土地利用强度图谱（IM模型）直观地阐述了土地利用转化的变换模式；并量化产水、固碳、粮食及生境质量这4个生态系统服务的供需指标并在网格尺度上计算其供需比，采用Spearman系数和莫兰指数探讨土地利用强度与生态系统服务供需比之间的权衡/协同特征；最后，耦合阈值和四象限法对研究区进行生态管理分区. 结果表明：①耕地→建设用地表现出系统倾向性，林地→未利用地和水域→林地等表现出系统抑制性，这些地类转换特征符合土地利用变化规律，一定程度上说明了土地利用强度图谱的可行性. ②碳储量与生境质量均呈现出西高东低的空间分布态势；产水量的高值区集中在西南部和东北部；粮食生产服务的高值区主要分布于地势平坦或水源充足的区域. ③粮食生产服务、水源供给服务与土地利用强度呈现出协同关系，且协调关系呈减弱趋势；而固碳和生境质量服务的供需比与土地利用强度之间呈现出权衡关系，且权衡关系呈增强趋势. ④将滇中城市群划分为8个生态管理区，生态管理潜力区、城镇扩张与农业生产核心区为主要研究分区，结合土地利用强度与生态系统服务供需比空间分布，提出了差异化管控措施. 研究结果可为滇中城市群可持续发展、生态环境保护和土地合理开发利用提供科学依据. |
| 英文摘要 |
| Studying the relationship between ecosystem service supply-demand ratios and land use intensity and conducting ecological management zoning plays an important role in promoting precise ecological environment management. Taking the central Yunnan urban agglomeration as an example， the transformation mode of land use transformation was visualized through land use intensity mapping （IM model）. Then， the supply/demand indicators of four ecosystem services， namely， water yield， carbon sequestration， food product， and habitat quality， were quantified， and their supply-demand ratios were calculated on a grid scale. The Spearman's coefficient and Moran's I index were used to explore the trade-off/synergy characteristics between land use intensity and ecosystem service supply-demand ratio. Finally， the coupling threshold and four-quadrant methods were used to partition the study area for ecological management. The results showed that： ① Cropland→construction land showed systematic tendency； forestland→unutilized land， water→forestland， etc.， showed systematic inhibition； and these features of land use conversion were in line with the rule of land use change， which to a certain extent illustrated the feasibility of land use intensity mapping. ② Carbon sequestration and habitat quality both showed a spatial distribution pattern of high in the west and low in the east； the high value areas of water production were concentrated in the southwest and northeast. The high value areas of food production services were mainly distributed in areas with flat terrain or sufficient water sources. ③ Food product， water yield， and land use intensity showed a synergistic relationship， and the coordinating relationship tended to weaken， while carbon sequestration， habitat quality， and land use intensity showed a trade-off relationship between them， and the trade-off relationship tended to strengthen. ④ The central Yunnan urban agglomeration was divided into eight ecological management zones， with ecological development potential zones and urban development restricted development zones as the main research subzones. Combined with the spatial distribution of land use intensity and ecosystem service supply-demand ratio， differentiated control measures are proposed， and the results of the study can provide scientific basis for the sustainable development， ecological environmental protection， and rational development and utilization of land in the central Yunnan urban agglomeration. |
