论文部分内容阅读
为了解干旱对贵州典型喀斯特石漠化生态治理环境土壤动物群落组成和数量分布的影响,在2010年贵州干旱的背景下,于4月分别对贵州毕节喀斯特高原山地、贞丰喀斯特高原峡谷和清镇喀斯特高原盆地地貌类型的土壤动物进行了调查,并与2009年同期在相同生境下的3个研究区土壤动物群落组成和数量分布进行对比。结果显示:清镇、毕节和贞丰3个研究区土壤动物类群在2009年4月为4门12纲24目,个体总数3139只,而在受到干旱影响的2010年4月则为2门8纲17目,个体总数1 031只。干旱导致喀斯特石漠化脆弱生态环境下土壤动物类群数和个体总数量减少,其中个体数减少幅度最大的是弹尾目和蜱螨目等占优势的中小型类群,其他种类也不同程度的受到影响;土壤动物个体总数的水平和垂直分布明显下降,多样性、均匀性、优势度和丰富度指数急剧降低。
In order to understand the effects of drought on the composition and distribution of soil fauna community in a typical karst rocky desertification-controlled ecological environment in Guizhou Province, in April 2010 in Guizhou Province, The soil fauna types of soil fauna in the Karst Plateau were investigated and compared with the composition and distribution of soil fauna in the three study areas under the same habitat in the same period of 2009. The results showed that the soil fauna in Qingzhen, Bijie and Zhenfeng were 4 orders, 12 orders and 24 orders in April 2009, with a total of 3139 individuals, while in April 2010 affected by drought, there were 2 Class 17 orders, the total number of individuals 1,031. In the fragile ecological environment of karst rocky desertification caused by drought, the number of soil fauna and the total number of individuals decreased. Among them, the largest decrease was the small and medium-sized taxa with the largest number of individuals and the other species affected to varying degrees . The total horizontal and vertical distribution of soil fauna decreased significantly, while the diversity, uniformity, dominance and richness index decreased drastically.