摘要
以桐柏县为研究区域,首先通过生态系统服务价值和生态敏感性分析,综合评价桐柏县生态系统重要性分布,并以此确定生态源地,再通过MCR模型与最小成本路径法生成潜在生态廊道,并根据重力模型判别重要生态廊道,最终得到包含5条关键廊道和6条一般廊道的生态廊道网络。结果表明,桐柏县域生态系统服务价值整体较普通,生态敏感性总体较差,两者均呈现低山丘陵区高于平原区、沿河(湖)地区高于周边区域的特点;生态源地主要分布在县域东北部高乐山区、西南部桐柏山和中部浅山丘陵区,与桐柏县高乐山国家级自然保护区、桐柏山省级自然保护区以及桐柏县主要水源地的空间分布具有较高的吻合度;桐柏县廊道总长141.94 km,其中,关键廊道40.12 km,一般廊道101.82 km,廊道构建的最适宽度范围为30~60 m,生态廊道与生态源地之间大致形成一个相互连接、闭合环形区域,能有效促进生物物种的迁移交流以及生态系统间的物质循环和能量流动。
Taking Tongbai County as the study area,firstly,through the analysis of ecosystem service value and ecological sensitivity,the importance distribution of Tongbai County’s ecosystem was comprehensively evaluated,and the ecological source was determined.Then,the potential ecological corridors were generated through the MCR model and the minimum cost path method,and the important ecological corridors were identified according to the gravity model.Finally,the ecological corridor network consisting of five key corridors and six general corridors was obtained.The results showed that the ecosystem service value of Tongbai County was generally ordinary,and the ecological sensitivity was generally poor.Both of them were higher in low mountain and hilly areas than in plain areas,and higher in riverside(lake)areas than in surrounding areas;the ecological source areas were mainly distributed in Gaole Mountain area in the northeast of the county,Tongbai Mountain area in the southwest,and shallow mountain and hilly area in the middle,which had a high degree of coincidence with the spatial distribution of Gaole Mountain National Nature Reserve in Tongbai County,Tongbai Mountain Provincial Nature Reserve,and the main water sources in Tongbai County;the corridor in Tongbai County had a total length of 141.94 km,including 40.12 km of key corridors and 101.82 km of general corridors.The optimal width of the corridor was 30~60 m.The ecological corridor and the ecological source roughly formed an interconnected,closed circular area,which could effectively promote the migration and exchange of biological species,as well as the material cycle and energy flow between ecosystems.
作者
崔康成
侯晓辉
徐吉平
CUI Kang-cheng;HOU Xiao-hui;XU Ji-ping(Henan Water&Power Engineering Consulting Co.,Ltd.,Zhengzhou 450016,China)
出处
《湖北农业科学》
2022年第S01期217-224,228,共9页
Hubei Agricultural Sciences
关键词
生态廊道
生态系统服务价值
生态敏感性
MCR模型
桐柏县
ecological corridor
ecosystem service value
ecological sensitivity
MCR model
Tongbai County
作者简介
崔康成(1994-),男,江西赣州人,硕士,主要从事生态环境保护与修复研究,(电话)13262519220,(电子信箱)981865695@q.com
