珠江流域生态风险时空演变特征研究  

Characterization of the Spatial and Temporal Evolution of Ecological Risks in the Pearl River Basin

作　　者：王兴丽 崔海山[1,2] Wang Xingli;Cui Haishan(Guangzhou University,School of Geography and Remote Sensing,Guangzhou Guangdong 510631;Guangzhou University-University of Birmingham Joint Research Center for Service Industry and Urban Development,Guangzhou Guangdong 510631,China)

机构地区：[1]广州大学地理科学与遥感学院,广东广州510631 [2]广州大学伯明翰大学服务业与城市发展联合研究中心,广东广州510631

出　　处：《国土与自然资源研究》2025年第2期86-90,共5页Territory & Natural Resources Study

基　　金：国家自然科学基金项目(41876204)。

摘　　要：生态风险评价在环境保护和可持续发展领域具有重要的研究地位。以珠江流域为研究区域,基于遥感影像数据和统计数据,采用“压力-状态-响应”模型构建生态风险评价体系,开展珠江流域2014、2017、2020年生态风险值的时空演变特征研究。研究结果表明,(1)流域风险水平较低,在空间分布上呈现“中间低,东南-西北两侧高”的特征。(2)生态风险转移主要在低水平风险等级内发生,2014-2017年转移速度快于2017-2020年转移速度,转移幅度小,以相邻等级间相互转换为主。(3)在2014-2017年,流域中部风险改善,沿东南-西北方向风险由中央向两侧加剧,在2017-2020年,流域西部风险改善,其余区域表现为加剧。研究结果有助于了解生态风险的时空分布情况,为管理者制定针对性的风险管理措施提供科学依据。Ecological risk assessment has an important research status in the field of environmental protection and sustainable development.Taking the Pearl River Basin as the study area,based on remote sensing image data and statistical data,the"pressure-state-response"model was used to construct the ecological risk evaluation system and carry out a study on the spatial and temporal evolution of the ecological risk values in the Pearl River Basin in 2014,2017 and 2020.The results of the study show that,(1)the risk level of the basin is low,and its spatial distribution is characterized by"low in the middle and high in the southeast-northwest".(2)The ecological risk transfer mainly occurs within the low-level risk level,and the transfer speed is faster in 2014-2017 than in 2017-2020,with a small transfer amplitude,mainly converting between neighboring levels.(3)In 2014-2017,risk improved in the central part of the basin and intensified from the center to the sides along the southeast--northwest direction,and in 2017-2020,risk improved in the westerm part of the basin and intensified in the rest of the region.The results of the study help to understand the distribution of ecological risks in time and space,and provide a scientific basis for managers to develop targeted risk management measures.

关 键 词：时空演变 生态风险 珠江流域 

分 类 号：X826[环境科学与工程—环境工程] F301.24[经济管理—产业经济]