摘要
保障生态安全是提升区域生态安全水平、充分发挥生态功能以及满足人对绿色空间需求的基础。以广西河池为例,根据生态系统服务功能重要性识别选取生态源地,参考高程、土地利用覆被等阻力因子构建生态阻力面;通过生态源地和最小累计阻力模型(MCR)分析区域生态安全现状,得出以下结论:河池市生态源地总面积为1347.68 km^(2),占全市总面积的4.05%,主要分布于河池市的西部和中部,打狗江、刁江、红水河等重要水系沿岸,基本涵盖了国家级和省级自然保护地,识别结果比较合理。生态廊道总长度为698.34 km,为城乡总体空间格局发挥生态屏障作用。研究综合考虑了生态安全保障中生态过程的重要性,为河池市融入生态文明先行示范区建设提供科学依据与决策参考,对其他地区生态安全分析也具有一定的借鉴意义。
The guarantee of ecological security is the basis to improve the level of regional ecological security,give full play to ecological functions and meet the needs of people for green space.Taking Hechi in Guangxi as an example,the ecological source areas were selected according to the importance of ecosystem services.The ecological resistance surface was constructed by referring to the resistance factors such as elevation,land use and cover,and the current situation of regional ecological security was analyzed by ecological source area and minimum cumulative resistance model(MCR).The conclusion is as follows:the total area of ecological source areas in Hechi City is 1347.68 km^(2),accounting for 4.05%of the total area of Hechi City.It is mainly distributed in the west and central part of Hechi City,along the banks of Dagoujiang River,Diaojiang River,Hongshui River and other important water systems,basically covering national and provincial nature reserves,and the identification results are reasonable.The total length of the ecological corridor is 698.34 km,which plays an ecological barrier role in the overall spatial pattern of urban and rural areas.This study comprehensively considered the importance of ecological process in ecological security guarantee,and provided scientific basis and decision-making reference for Hechi City to integrate into the ecological civilization pilot demonstration area construction,and also had certain reference significance for the ecological security analysis of other regions.
作者
虞听
周轶晗
陈天依
徐可
胡业翠
Yu Ting;Zhou Yihan;Chen Tianyi;Xu Ke;Hu Yecui(School of Land Science and Technology,China University of Geosciences(Beijing),Beijing 100089,China)
出处
《能源与环保》
2021年第3期39-43,58,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
生态服务功能
生态源地
生态节点
生态廊道识别
生态安全
ecological service function
ecological source
ecological node
ecological corridor identification
ecological security
