基于景观生态风险评价的水网乡村韧性规划——以长白荡片区为例  

Rural Water Network Resilience Planning Based on Landscape Ecological Risk Assessment:A Case Study of Changbaidang

作　　者：王沁园 丁金华[1] WANG Qinyuan;DING Jinhua

机构地区：[1]苏州科技大学建筑与城市规划学院

出　　处：《南方建筑》2022年第5期10-17,共8页South Architecture

基　　金：国家自然科学基金项目(41301191);空间利益视角下的乡村空间重组与调控机制研究——以苏南地区为例;苏州科技大学教学改革与研究项目(2019JGMK-01);风景园林专业生态课程链思政教育教学研究与实践;2021年江苏省研究生科研创新计划项目(KYCX21_3056);基于生态风险评价的苏南水网乡村韧性规划策略研究;苏州科技大学风景园林学学科项目共同资助。

摘　　要：苏南乡村是我国乡村发展的先行区,具有复杂的水网空间特征,呈现出一定的地域特殊性。随着城镇化进程的加速,乡村水域网络破碎化、乡村生态风险增加等问题凸显。以苏州昆山长白荡片区为例,利用景观格局指数法、克里金插值法和地理信息系统(GIS)技术,通过景观干扰度分析、景观脆弱度分析,构建景观生态风险评价模型。在风险评价结果的基础上,基于韧性的适应性、冗余性、鲁棒性特征,从构建抗干扰性生态网络、重组多情景功能分区和完善自适应循环体系三个层面提出苏南水网乡村韧性规划策略,为水网乡村的可持续发展提供新的思路。Rural areas in the south of Jiangsu are the pilot zones of rural development in China. These regions have unique regional features due to the complex spatial features of their water networks. As the urbanization accelerates, problems such as fragmentation of rural water networks and increased rural ecological risk become prominent. In this research, a case study was conducted on the Changbaidang area of Kunshan, Suzhou. A landscape ecological risk assessment model was built and used to scientifically predict the rural ecological risk. Based on the results, a resilient planning strategy that can positively manage the interference and risk was explored.Using the GIS platform and Fragstats software, a landscape ecological risk assessment model was built using the landscape pattern index method and Kriging method. Firstly, the Changbaidang area was divided into 4km×4km square grids with the equal-spacing sampling method and the center point of the grid was used as the ecological risk value of the sample plot. Secondly, the landscape disturbance index and landscape vulnerability index were analyzed through the landscape pattern index method, and a landscape ecological risk assessment model was built. Next, spatial interpolation of the ecological risk index was performed using the Kriging method and the spatial distribution of landscape ecological risks was graded by the natural discontinuity point method, thus developing the spatial distribution map of ecological risks in the study area. The study area was divided into five levels: I-low ecological risk area(0.0217 ≤ ERI ≤ 0.185), IIrelatively low ecological risk area(0.185 ≤ ERI ≤ 0.315), Ⅲ-moderate ecological risk area(0.315 ≤ ERI ≤ 0.483), IV-relatively high ecological risk area(0.483 ≤ ERI ≤ 0.836) and V-high ecological risk area(0.836 ≤ ERI ≤ 1.407). The results demonstrated that the ecological risk in Changbaidang is generally high in northeast regions, but low in southwest regions. High-risk areas are concentrated in Chenmudang,Limin Vill

关 键 词：景观生态风险评价 韧性规划 水网乡村 生态格局 

分 类 号：TU-02[建筑科学—建筑理论] TU982.29