野生扬子鳄栖息地土壤金属元素含量初步研究

PRELIMINARY STUDIES ON THE CONTENT OF METAL ELEMENTS FROM THE HABITATS OF CHINESE ALLIGATOR (ALLIGATOR SINENSIS)

2002年9-11月,作者在皖南地区对扬子鳄栖息地进行了质量评估.主要是对现有野生鳄的栖息地以及曾经有鳄分布的栖息地共20样点土壤中的Cd、Pb、Zn、Cu、Fe、Ca、Mg等7种金属元素含量进行测定,对重金属元素的数据分析,采用我国土壤元素背景值作为评价标准,每个样点的污染程度以多因子评价指数为指标,发现曾经有鳄分布的样地土壤中的重金属元素含量较其它样地的重金属元素含量高,野生扬子鳄对于栖息地的无机环境是有一定的依赖性的.人类的生产、生活不但影响了野生扬子鳄的生物环境,也影响和改变了野生扬子鳄的无机环境.

A quality evaluation on the habitats of Chinese Alligator was conducted from september to november 2002. We analyzed 7 metal elements of the soil samples from the habitats where Alligator lives or ever lived in the southern area of Anhui. We found that the content of the metal elements from the habitats where the Alligator ever existed is higher than where the Alligator lives now. In addition, We found that Chinese alligator rely on their habitats to some extent. Not only did Human's production and life affect the organic environment of the Wild Chinese Alligator, but also affected the inorganic environment of the Wild Chinese Alligators.