敦煌西湖湿地鸟类栖息地重要性模糊综合评判

根据2007～2008年在甘肃敦煌西湖国家级自然保护区进行的湿地鸟类调查种类和数量数据,运用模糊综合评判法对保护区内的8块湿地进行了湿地鸟类栖息地重要性评价. 评判中隶属度的确定采用最佳因子值法,并分春、秋两种最佳因子值进行评判.结果表明:(1)春季各湿地均比秋季的重要性程度高,春季是管理的重点;(2)春秋两季南湖湿地重要性(0.938和0.966)都要远大于其它的湿地.春季盐池湾、羊水海子、南大湖的结果较相近,重要性程度次之,可持有相同程度的管理水平.党河水库、墩子湾、马圈湾、南园湖的重要性程度较低,只需一般水平的管理;(3)秋季各湿地水平除了南湖外普遍较低,羊水海子和盐池湾的重要性(0.340和0.269)相对较高些,但也只需一般水平的管理.

The aplication of fuzzy synthetic method to importance assessment of the wetland bird Habitats in Dunhuang West Lake National Nature Reserve

Based on the data of species and population we got from the research of wetland birds in Dunhuang West Lake National Nature Reserve of Gansu Province from 2007 to 2008, this article aimed to assess the importance of the wetland bird habitat using fuzzy synthetic method in 8 wetlands in the nature reserve. The fuzzy membership function value was measured by the best value of factors. We dealt with the data in two values, one was the maximum of spring data, the other was the maximum of autumn data. We got the results as follows:(1)The wetland bird habitat was more important in spring than that in autumn in all 8 wetlands, so spring is a key period to the management of the habitat. (2)The Nanhu wetland was the most important habitat of all both in spring and autumn, it was 0.938 and 0.966. In spring, for other wetlands like Yanchi Sinus, Yangshui Lake, Nanda Lake, the results were similar, positioned in the second most important habitats where equal attentions are required for management. Other wetlands like Danghe Reservoir, Dunzi Sinus, Majuan Sinus, Nanyuan Lake, which were less important, only routine management is required. (3)In autumn, the habitats in all wetlands were generally less important except that in Nanhu wetland. Although the habitats in Yangshui Lake, Yanchi Sinus had relatively higher importance of 0.340 and 0.269, routine management is enough.