To discuss the character of soil animal community and its diversity in mulberry tree orchard,from February to September,1999,we investigated the soil animal community and its environment in mulberry tree orchard in La...To discuss the character of soil animal community and its diversity in mulberry tree orchard,from February to September,1999,we investigated the soil animal community and its environment in mulberry tree orchard in Laibang town,Yuexi county.Faunas collected were 3804 individuals which belong to 5 phyla,12 classes and 34 genera. Among them 4 genera were dominate and 7 genera were common.These constitute 94.45% of the total collected population. The result shows:the more species and individual numbers and the higher evenness,the higher the soil animal community diversity.Moreover,the longer the mulberry tree planted,the higher the index of H,E,N and DIC for soil animal community. In the sample with more destructive insects,S,E and H values for soil animal community are high. The genera and individual numbers of soil animals decrease with the increase of soil depth,but casually increase a little bit in some sample field. The individual numbers are the highest in spring,then in autumn,and then in summer,and the least in winter on the whole.Approximately,the diversity index of soil animal community in the mulberry tree orchard is higher than that in the tea garden.展开更多
笔者选取岳西县的来榜地区作为研究区,按照8个点/km 2的密度采集表层土壤样品,系统分析了土壤样品中Cd、Hg、As、Se等21项元素指标。采用土地利用现状图斑作为评价单元,开展了土壤环境质量评价。通过层次分析法,根据岳西翠兰适生条件,...笔者选取岳西县的来榜地区作为研究区,按照8个点/km 2的密度采集表层土壤样品,系统分析了土壤样品中Cd、Hg、As、Se等21项元素指标。采用土地利用现状图斑作为评价单元,开展了土壤环境质量评价。通过层次分析法,根据岳西翠兰适生条件,选取了土壤pH值、土壤质地、土壤类型、土壤肥力、土壤环境质量、坡度、坡向、海拔和岩性等9个评价指标,构建了岳西翠兰种植适宜性评价体系。采用模糊综合评价方法进行了岳西翠兰适宜性评价,并利用1∶25万土地质量地球化学数据对岳西县翠兰种植适宜性进行了初步评价。结果显示,工作区内土壤环境质量较好,综合土壤环境质量以低于风险筛选值为主,占97.14%,主要风险因子为Ni、Cr、Cu元素。工作区内岳西翠兰高度适宜、中等适宜种植区面积分别为11.51 km 2、21.66 km 2,约占评价总面积的31.2%、58.72%。岳西县翠兰种植高度适宜区主要分布于包家乡、主簿镇、头陀镇、来榜镇和河图镇等地。上述结论可为岳西县调整和优化岳西翠兰布局与生产和土地生态管护提供依据。展开更多
文摘To discuss the character of soil animal community and its diversity in mulberry tree orchard,from February to September,1999,we investigated the soil animal community and its environment in mulberry tree orchard in Laibang town,Yuexi county.Faunas collected were 3804 individuals which belong to 5 phyla,12 classes and 34 genera. Among them 4 genera were dominate and 7 genera were common.These constitute 94.45% of the total collected population. The result shows:the more species and individual numbers and the higher evenness,the higher the soil animal community diversity.Moreover,the longer the mulberry tree planted,the higher the index of H,E,N and DIC for soil animal community. In the sample with more destructive insects,S,E and H values for soil animal community are high. The genera and individual numbers of soil animals decrease with the increase of soil depth,but casually increase a little bit in some sample field. The individual numbers are the highest in spring,then in autumn,and then in summer,and the least in winter on the whole.Approximately,the diversity index of soil animal community in the mulberry tree orchard is higher than that in the tea garden.
文摘笔者选取岳西县的来榜地区作为研究区,按照8个点/km 2的密度采集表层土壤样品,系统分析了土壤样品中Cd、Hg、As、Se等21项元素指标。采用土地利用现状图斑作为评价单元,开展了土壤环境质量评价。通过层次分析法,根据岳西翠兰适生条件,选取了土壤pH值、土壤质地、土壤类型、土壤肥力、土壤环境质量、坡度、坡向、海拔和岩性等9个评价指标,构建了岳西翠兰种植适宜性评价体系。采用模糊综合评价方法进行了岳西翠兰适宜性评价,并利用1∶25万土地质量地球化学数据对岳西县翠兰种植适宜性进行了初步评价。结果显示,工作区内土壤环境质量较好,综合土壤环境质量以低于风险筛选值为主,占97.14%,主要风险因子为Ni、Cr、Cu元素。工作区内岳西翠兰高度适宜、中等适宜种植区面积分别为11.51 km 2、21.66 km 2,约占评价总面积的31.2%、58.72%。岳西县翠兰种植高度适宜区主要分布于包家乡、主簿镇、头陀镇、来榜镇和河图镇等地。上述结论可为岳西县调整和优化岳西翠兰布局与生产和土地生态管护提供依据。
