首页|长江流域国家级水产种质资源保护区时空演变特征及其驱动因素

长江流域国家级水产种质资源保护区时空演变特征及其驱动因素

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根据长江流域共231处国家级水产种质资源保护区,运用核密度估计法探究其时空演化特征.在此基础上,引入基于最优参数地理探测器对因子实现最优离散化,探测长江流域范围内的主要影响因子.并将熵权法与K-means聚类结合,挖掘各地级市差异化模式,以期为我国水产种质资源保护区的建设、发展和管理提供学理参证.主要结论如下:(1)长江流域水产种质资源保护区在空间上呈聚集型分布,地理集中程度较高,地区间不均衡程度高,呈现"单核集聚—三核集聚—多极多区"的空间分布密度演化格局;(2)自然环境因素、经济社会因素以及环境污染与治理因素共同作用于保护区空间聚集格局;(3)长江流域涉及的各地级市具有差异化的保护区分布特征和成因.
Spatial and Temporal Evolution Characteristics and Influencing Factors of National Aquatic Germplasm Reserves in the Yangtze River Basin
The establishment of national aquatic germplasm reserves is critical for encouraging harmonious cohabitation of man and nature,protecting national food security and preserving biodiversity.Under the background of the"ten-year ban on fishing in the Yangtze River",revealing the spatial distribution characteristics and driving factors of the national aquatic germplasm reserves can help protect the aquatic germplasm resources in the Yangtze River Basin effectively.The kernel density estimation approach was used in this research to investigate the spatial and temporal evolution characteristics of 231 national aquatic germplasm reserves in the Yangtze River Basin.On this premise,an optimal parameter-based geodetector was presented to optimally discretize the factors and discover the Yangtze River Basin's primary driving forces and mechanisms.The entropy weight approach was paired with K-means clustering to investigate the differentiation patterns of each prefecture-level city in terms of the density of reserves,physical geography,socio-economics,and environmental pollution and governance,in order to provide theoretical support for the development,construction,and management of aquatic germplasm reserves in China.The following were the primary conclusions:firstly,national aquatic germplasm reserves in the Yangtze River Basin were spatially aggregated,with a high degree of geographical concentration and a high degree of inter-regional imbalance,exhibiting a spatial distribution density evolution pattern of"single-core agglomeration-triple-core agglomeration-multi-polar multi-zone".Secondly,the national aquatic germplasm reserves in the Yangtze River Basin were developed as a result of a mix of natural environmental conditions and economic and societal influences.Natural environmental elements,economic and social considerations,played roles in the spatial aggregation pattern of reserves.Among which,economic and social factors had a greater impact.Thirdly,there existed diverse distribution features in the numerous prefecture-level cities in the Yangtze River Basin,which needed to be protected in differential ways.

aquatic germplasm resourcestemporospatial evolutioninfluencing factorgeographical detec-torsentropy weight methodYangtze River

尹铎、梁诗、林煦丹

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广州大学地理科学与遥感学院,广东广州 510006

广州大学华南人文地理与城市发展研究中心,广东广州 510006

粤港澳大湾区移民治理与城市发展智库,广东广州 510006

水产种质资源 时空演化 影响因素 地理探测器 熵权法 长江

国家自然科学基金国家自然科学基金广东省自然科学基金青年提升项目广东省哲学社会科学规划学科共建项目教育部人文社会科学研究青年基金

42371227423012572024A1515030059GD22XGL1923YJCZH279

2024

10.11870/cjlyzyyhj202408006

长江流域资源与环境
中国科学院资源环境科学与技术局 中国科学院武汉文献情报中心

长江流域资源与环境

CSTPCDCSSCICHSSCD北大核心
影响因子：1.35
ISSN：1004-8227
年,卷(期)：2024.33(8)