长江外滩枫杨林灭螺效果研究  

The effect of killing-Oncomelania about the Pterocarya stenoptera community on the beaches of the Yangtze River

作　　者：程炯[1] 杨毅[1] 王万贤[1] 李晓宇[1] 陈全胜[1] 

机构地区：[1]湖北大学生命科学学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2000年第1期80-83,共4页Journal of Hubei University：Natural Science

基　　金：国家自然科学基金资助项目!( 3 9670 65 4)

摘　　要：经调查统计得出 :( 1 )长江外滩枫杨林钉螺密度 (每 0 .1 1m2 内个数 )与意杨林、旱柳林和芦苇林的差值置信区间分别为 8.2 80 9～ 1 8.2 3 0 9、-0 .762 2～ 1 .64 62和 5.3 1 90～ 1 3 .3 80 9;( 2 )枫杨林群落生态因子与钉螺的相关性表现为 ,最适宜于钉螺孳生的光照为 5× 1 0 0～1 5× 1 0 0lx、土壤湿度为 2 0 %～ 4 0 %、林底植被盖度为 4 0 %～ 70 % ;( 3 )室内对照实验显示 ,枫杨鲜叶 0 .5%浓度水浸液灭螺效果在 6d后为 84 % ,优于同浓度凋落物的灭螺效果 4 2 .7% .上述研究结果为改善群落结构 ,提高枫杨林灭螺效果 。By investigation and statistics,the result showed:(1)The reliable scope of disparity in the density of Oncomelaniabetween the Pterocarya stenoptera community and the Opulus SPP.commmunity,the Phragmites commuis community’the Salix mastsudana community on the beaches of the Yangtze River was 8.280 9～ 18.230 9 ,5.319 0～13.380 9 and -0.762 2～1.646 2;(2)The range of the most suitable to live in for Oncomelania was that the insolation was 5×100～15×100 lx and the soil moisture was 20 %～40 % and the vegetation cover under the forest was 40 %～70 % between the ecological factors of the Pterocarya stenoptera community and Oncomelania; (3)The experiments indoor disclosed that the effect of killing-Oncomelania of 0.5 % water-living leaves was 84 % which was superior to the same density water-dad leaves 42.7 %.The result in research before may be provided as reference basis in order to improve the structure of community and to raise the effect of killing-Oncomelania of the Pterocarya stenoptera community.

关 键 词：枫杨林 密度 生态因子 灭螺效果 钉螺 灭螺植物 

分 类 号：R184.38[医药卫生—流行病学] Q949.96[医药卫生—公共卫生与预防医学]