摘要
日照海岸线长 99 6km ,滩涂面积约 5 1km2 。海岸滩涂类型多样 ,沿海蟹类资源丰富 ,计有蟹类 12科、 2 5属、 3 3种。日照沿海的蟹类共有 4种生态类型。种群数量大的有 10余种 ,其他均一般或稀少。近 10年来 ,日照沿海的蟹类资源呈现明显的下降趋势。
The distance of Rizhao coastline is 99 6km,the area of sea beach is about 51km 2.There are many of sea beach types.The resource of crabs is rich.The crabs belong to 12 families 25 genera 33 species,and belong to 4 kinds of ecotype.There are more than 10 species having a large mount,others are common or exiguity.The resource of crabs has decreased strikingly in the past 10 years.
出处
《国土与自然资源研究》
2002年第3期60-61,共2页
Territory & Natural Resources Study
关键词
蟹类
生态特点
区系特点
数量变动
日照沿海
日照市
山东
crabs
ecological characteristic
characteristic of fauna
number of change
Rizhao seaboard
