特大城市新区土地利用变化对生态系统服务权衡-协同关系影响：以南京江北新区为例

doi:10.19741/j.issn.1673-4831.2022.0580

摘要/Abstract

摘要： 了解国家级新区生态系统服务动态变化及权衡关系对新区建设中资源合理配置及可持续发展具有重要意义。基于2000、2010和2020年南京江北新区土地利用类型变化,结合InVEST模型和GIS技术识别不同尺度生态系统服务(碳储量、生境质量和产水量)的动态变化及权衡协同关系。结果表明:(1)2000-2020年南京江北新区生境质量和碳储量呈下降趋势,分别由0.490 5和2.502×10⁷ t降低到0.461 3和2.460×10⁷ t,两者高值区主要分布在林地,低值区位于六合开发区等城镇建设用地;产水量增加6.65×10⁸ m³,高值区位于建设用地,低值区主要位于长江沿岸的水域;(2)区域尺度上,产水量与碳储量和生境质量以权衡关系为主,生境质量与碳储量以协同关系为主,协同部分占比为11%;街道尺度上,江北新区直管区生态系统权衡协同度维持较高水平,一般区与生态区权衡协同度较低;建设用地和水面面积的增加与减少是权衡与协同关系变化的重要驱动机制。

关键词: 城市新区, 生态系统服务, 权衡与协同, InVEST模型

Abstract: Quantitative description of ecosystem services (ES) interactions is of great significance for rational allocation of resources and sustainable development in the new urban areas. In this study multiple ESs were calculated, including carbon storage (CS), habitat quality (HQ) and water yield (WY) in Nanjing Jiangbei New Area. The ESs' tradeoff-synergy relationships were assessed at different scales using InVEST model, GIS technology and the land use/land cover data respectively in 2000, 2010 and 2020. The results show that:(1) From 2000 to 2020, in Nanjing Jiangbei New Area, the HQ and CS decreased from 0.490 5 and 2.502×10⁷ t to 0.461 3 and 2.460×10⁷ t, respectively. The high values of CS and HQ were mainly distributed in forestland, while the low values were located in urban construction land such as Luhe Development Zone. The WY increased by 6.65×10⁸ m³, with the high value area mainly falling in the construction land, and the low value area located in the water bodies along the Yangtze River. (2) At the regional scale, the WY-CS interaction and WY-HQ interaction presented mainly trade-offs, while the HQ-CS interaction presented mainly synergistic, accounting for 11% of the total area. At the district scale, the ES tradeoff-synergy degree kept relatively high in the districts directly managed under Jiangbei New Area, while the ES tradeoff-synergy degree was relatively low in other districts. The change of construction land and water surface area has been identified as an important driving mechanism affecting the tradeoff or synergy of ESs.

Key words: new urban area, ecosystem service, tradeoff and synergy, InVEST model

中图分类号:

钱红运, 陈爽. 特大城市新区土地利用变化对生态系统服务权衡-协同关系影响：以南京江北新区为例[J]. 生态与农村环境学报, 2023, 39(9): 1123-1132.

QIAN Hong-yun, CHEN Shuang. Effects of Land Use Change on Tradeoff-synergy Relationship of Ecosystem Services in New Area of Megacity: The Case of Nanjing Jiangbei New Area[J]. Journal of Ecology and Rural Environment, 2023, 39(9): 1123-1132.

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