摘要
在城市化进程加快推进的背后各式生态问题日益凸显,生态安全与生态文明建设成为当前社会发展的一个重要方向。构建区域生态安全格局对地区生态安全保障与规划意义明显。基于生态文明建设“以人为本”的思想,从生态需求角度构建耦合居民生态需求的源地评价体系,尝试利用夜间灯光指数和不透水表面指数共同校正阻力面,利用最小累积阻力模型识别生态廊道网络,最后结合各生态组分构建广东省陆域生态安全格局。结果显示广东省重要性程度高的生态用地斑块面积占全省土地总面积的61.17%,其中,生态源地面积占全省土地总面积的29.59%。各类生态廊道共同构建了“一带多廊两防护”的蛛网式辐射分布网络。利用自然保护区数据从侧面验证了生态安全格局构建的有效性,同时也发现结合多元数据共同校正的阻力面更为合理。广东省生态安全保障的现实路径可以从污染治理、生态修复和源地保持等方面入手。生态源地和生态廊道应成为优先重点生态保护区,建成区周围的次重要生态用地可以优先建设公共生态服务设施,减轻来自中心城区的高强度生态需求。
With the accelerating progress of urbanization,all kinds of ecological problems have become increasingly prominent;ensuring ecological security and constructing ecological civilization have thus become important in the context of current social development.This study proposes a source evaluation system that couples the ecological needs of residents of Guangzhou,based on"people-oriented"thinking in the construction of ecological civilization.The minimum cumulative resistance model and the resistance surface were then jointly corrected based on the nighttime light index and the impervious surface index to identify the ecological corridor network.Finally,the ecological security pattern of Guangdong Province based on the ecological components was constructed.The results show the high degree of importance of the ecological land in Guangdong Province,accounting for 61.17%of the total area,of which the ecological source area accounted for nearly half,amounting to 29.59%of the total area.The key ecological corridors,together with the potential ecological corridors and the existing corridors,have jointly built a spider web-style radiation distribution network with“one areamulticorridors-two protections”.The validity of the pattern construction was verified through the nature reserve data,and the resistance surface of multi-variable data co-correction was found to be more appropriate.The ecological security pattern of Guangdong Province can be ensured by focusing on pollution control,ecological restoration,and ecological source areas maintenance.The protection of ecological sources and ecological corridors should be prioritized.The secondary ecological land around the built-up areas can be prioritized for the construction of public ecological service facilities and reducing the high-intensity ecological needs of the central city.
作者
陈德权
兰泽英
李玮麒
CHEN De-quan;LAN Ze-ying;LI Wei-qi(School of Management,Guangdong University of Technology,Guangzhou 510520,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2019年第7期826-835,共10页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(41301377)
关键词
生态安全格局
最小累积阻力模型
生态需求
生态服务
广东省
ecological safety pattern
minimum cumulative resistance model
ecological demand
ecological service
Guangdong Province
