College of Landscape Architecture, Northeast Forestry University, Hexing Road 26, Harbin 150000, China.
Key Lab for Garden Plant Germplasm Development & Landscape Eco-Restoration in Cold Regions of Heilongjiang Province, Harbin 150000, China.
Int J Environ Res Public Health. 2019 Nov 21;16(23):4640. doi: 10.3390/ijerph16234640.
As the main bearing area of the ecological crisis in resource-rich cities, it is essential for the urban fringe to enhance regional ecological security during a city's transformation. This paper takes Daqing City, the largest oilfield in China's cold land, as an example. Based on remote sensing image data from 1980 to 2017, we use the DPSIR (Driving forces, Pressure, State, Impact, Response) framework and spatial auto-correlation analysis methods to assess and analyze the landscape eco-security change of the study area. From the perspective of time-space, the study area is partitioned, and control strategies are proposed. The results demonstrate that: (1) The landscape eco-security changes are mainly affected by oilfield exploitation and ecological protection policies; the index declined in 1980-2000 and increased in 2000-2017. (2) The landscape eco-security index has obvious spatial clustering characteristics, and the oil field is the main area of warning. (3) The study area determined the protection area of 1692.07 km, the risk restoration area of 979.64 km, and proposed partition control strategies. The results are expected to provide new decision-making ideas in order to develop land use management and ecological plans for the management of Daqing and other resource shrinking cities.
作为资源型城市生态危机的主要承载区，城市边缘区在城市转型过程中提升区域生态安全显得尤为重要。本文以中国寒地最大油田大庆市为例，基于 1980—2017 年遥感影像数据，运用驱动力—压力—状态—影响—响应（DPSIR）框架和空间自相关分析方法，对研究区景观生态安全变化进行评价分析，并从时空角度对研究区进行分区，提出了调控策略。结果表明：（1）景观生态安全变化主要受油田开采和生态保护政策的影响，1980—2000 年指数下降，2000—2017 年指数上升；（2）景观生态安全指数具有明显的空间集聚特征，油田是主要的警戒区；（3）确定了研究区 1692.07 km 的保护区和 979.64 km 的风险恢复区，并提出分区控制策略。研究结果为大庆等资源枯竭型城市的土地利用管理和生态规划提供了新的决策思路。
