基于DPSR模型的涉及自然保护区海岸带生态安全评估研究

Coastal Ecological Security Evaluation in Nature Reserve Based on the DPSR Model

以江苏东台海岸带为例,根据"驱动力-压力-状态-响应力"(DPSR)模型,结合研究区域实际情况,构建了江苏东台海岸带生态安全评价指标体系,同时通过收集东台1984、2001和2011年Landsat遥感影像数据,在地理信息系统(GIS)和遥感(RS)技术的支持下,运用加权主成分分析法对1984、2001和2011年东台海岸带生态安全状况(F值)进行了评价。结果表明,1984、2001、2011年的F值分别为3.242、0.279、-3.521,生态安全水平逐年下降,且呈加速下降的趋势;生态环境的恶化、生物多样性下降等趋势将进一步降低该区域的生态安全水平,并反映在状态指标中。

Taking Dongtai coastal zones as an object of study, an coastal ecological security index system of Dongtai was constructed according to the driving DPSR model and the actual instance of Dongtai. And then the ecological security status in this area was evaluated by the weighted PCA model in the years of 1984, 2001 and 2011 with the support of the technology of GIS and RS by collecting the topographic map and remote sensing image in different stage. The ealeulation results showed that the total score of ecological security （F） was 3.242, 0.279 and - 3.521 in 1984, 2001 and 2011, respectively. The level of ecology security decreased apparently with accelerated downward trend, and would reduce because of deterioration of ecological environment and biodiversity decrease, which is mostly reflected in the state index.