巫山大昌消落带钉螺可能孳生地气候生态环境分析  

Climate and Ecological Environment Analysis on Water-level-fluctuating Zone in Dachang with Oncomelania Snail Breeding

作　　者：梅勇 唐云辉 杨世琦 陈志军 吴成果[2] 

机构地区：[1]重庆市气象科学研究所,重庆401147 [2]重庆市疾病预防控制中心,重庆400042

出　　处：《中国农业气象》2010年第4期591-595,共5页Chinese Journal of Agrometeorology

基　　金：重庆市重大科技专项(CSTC;2007AB5029);重庆市自然科学基金项目(CSTC;2OO8BB1379);重庆市科技攻关计划项目(CSTC;2009AC0125);中国气象局成都高原气象研究所开放实验室基金项目(LPM2009008);科技部西部开发科技行动项目(2005BA901A01);中国气象局新技术推广项目(CMATG2009MS21)

摘　　要：借助ArcGIS及重庆库区1∶5万DEM与水文资料,提取重庆三峡库区消落带,并通过分析研究区域巫山大昌消落区水位的变化,进一步获取大昌消落带钉螺可能孳生区分布,同时利用温度、降水气候数据(1971-2000年)和植被指数对大昌消落带钉螺可能孳生区域的气候生态环境进行较为精细的分析。结果表明:大昌消落带钉螺可能孳生区域,每月平均温度均在成螺生长发育的温度阈值(5.87℃)以上,年>5.87℃活动积温的最低值为6160.7℃.d,大于钉螺完成一个世代所需的平均积温阈值(5821.4±70.1℃.d),3-4月>11.79℃的活动积温最低值为642.1℃.d;年降水量最小值为997.3mm,并且大昌钉螺可能孳生区域的植被指数均值为0.22。可见,该区域的气候生态环境能够满足钉螺生长发育繁殖的需求,必须加强对巫山大昌钉螺可能孳生区域的重点监测,以防止湖北、四川血吸虫病疫区钉螺输入。Based on 1∶50000 DEM and hydrological data of Three Gorges reservoir in Chongqing,considering to the change of water-level-fluctuating zone,the distribution of Oncomelania snail breeding in Dachang,Wushan was analyzed by using ArcGIS technology.Climatic ecological environment of Oncomelania snail breeding were analyzed by using of climatic data and vegetation factors.The results showed that all monthly average temperatures were greater than 5.87℃,the threshold of Oncomelania snail growth.The minimum of annual accumulated temperature（5.87℃）,6160.7℃·d,was greater than the threshold of whole generation of Oncomelania snail demand,5821.38±70.05℃·d.The minimum active accumulated temperature（11.79℃） during March to April was 642.1℃·d,the minimum annual precipitation was 997.3mm,the average NDVI value was 0.22.The climatic ecological environment conditions of Dachang could meet the demand of Oncomelania snail.So,it was necessary to strengthen surveillance of the potential Oncomelania snail habitats in Three Gorges reservoir region to prevent the snail spreading from Hubei and Sichuan areas.

关 键 词：钉螺 三峡库区 消落带 气候生态环境 

分 类 号：Q958[生物学—动物学]