基于环境一号卫星的自然保护区生态系统健康评价

Assessment of ecosystem health of nature reserve based on HJ-1 remote sensing imagery.

以生态系统健康及压力-状态响应模型作为研究方法,设计了一套基于环境一号卫星CCD数据的自然保护区生态系统健康评价评价方法、指标体系和技术流程.同时选择向海湿地自然保护区为示范区,以环境一号卫星CCD影像为数据源,对指标,对其生态系统健康现状进行了评价.结果表明,向海湿地自然保护区生态系统相对不健康、中等健康、较健康和相对健康的区域面积分别占整个自然保护区总面积的46.49%、18.02%、21.18%、14.31%,整个自然保护区生态系统健康水平一般,人类干扰严重,组织结构不太合理.向海湿地自然保护区生态系统健康水平一般的主要原因是人类活动日益增强和年降水量明显减少.

According to the theories and approaches of the ecosystem health and the press-state-response model,the indicators,assessment method and technological process of ecosystem health of nature reserve based on HJ-1 CCD remote sensing imagery were built in this study.Meanwhile,by using HJ-1 CCD remote sensing imagery,according to the assessment cell of grid,the study assessed the present situation of ecosystem health and explores the spatial distributing rules of Xianghai wetland nature reserve.The following results were obtained： In the structure of wetland ecosystem health of Xianghai wetland nature reserve,not-healthy area 46.49%,medium-healthy area18.02%,less-healthy area 21.18%,healthy area 14.31%.The wetland ecosystem heath was ordinary.The human interference strength was very strong.The organization and structure was irrational.The main reasons were attributed to the increasing human activity and the decrease of precipitation per-year.