基于生态敏感性分析的湖泊保护与利用——以湖北省斧头湖为例

为了湖泊生态系统健康及功能的可持续性，需要根据湖泊的具体情况加强对湖泊生态系统的管理，建立在湖泊生态敏感性分析基础上的生态功能分区，可为湖泊生态管理的具体措施的实施提供依据。以斧头湖为研究对象，在进行斧头湖生态环境调查基础上，选择有代表性的生态因子，利用GIS技术，采用因子叠加法，对其进行生态敏感性分析。结果表明:极高和高生态敏感区面积占斧头湖面积的32.0%，中度敏感区占斧头湖面积的57.1%，说明斧头湖生态敏感性总体上很高；同时根据生态敏感性分析结果对斧头湖保护与开发提出建议。首次将GIS矢量技术应用于湖泊生态敏感性区划，使生态敏感性因子空间叠加分析更为有效。同时，建议选取更多的因子如水生生物多样性、生物量等因素作为评价指标，可得到更全面的生态敏感性分区结果。

CONSERVATION AND UTILIZATION OF LAKE BASED ON ECOLOGICAL SENSITIVITY ANALYSIS ——A CASE STUDY OF THE FUTOU LAKE IN HUBEI PROVINCE

For maintaining the health and function of lake ecosystem,it is necessary to manage the lake ecosystem based on the lake specific environmental condition.Lake ecological sensitivity analysis can quantify the ecological function partitions,which is helpful for the lake ecosystem management.Based on ecological investigation of the lake environment,ecological sensitivity in Futou Lake was evaluated by selecting regional representative factors,utilizing the advanced GIS technology and using the model of multi factor summation with different weight.The results showed that about 320% of the study area was extreme and high sensitivity zones,and about 571% of the study area was moderate sensitivity zones,which indicated that the lake had a relatively high sensitivity.The advices of protection and utilization for these zones were suggested based on the spatial distribution of ecological sensitivity and importance of service.This study firstly applied GIS technology to assess the lake ecological sensitivity,making the spatial overlay of ecological factors effectively.At the same time,this article suggested that selecting additional factors such as aquatic biodiversity,biomass and other factors as the indicators could understand ecological sensitivity more comprehensively.〖