登录    注册    忘记密码

期刊文章详细信息

长江湖口至荻港段江豚春季对生境选择的初步分析    

Primary Analysis on Habitat Selection of Yangtze Finless Porpoise in Spring in the Section Between Hukou and Digang

  

文献类型:期刊文章

作  者:于道平[1] 王江[2] 杨光[3] 章贤[1]

机构地区:[1]铜陵白豚养护场,铜陵244000 [2]浙江理工大学生命科学学院,杭州310018 [3]南京师范大学生命科学学院,南京210097

出  处:《兽类学报》

基  金:国家环境保护总局国家级自然保护区基金资助项目

年  份:2005

卷  号:25

期  号:3

起止页码:302-306

语  种:中文

收录情况:AJ、BDHX、BDHX2004、BIOSISPREVIEWS、CAS、CSCD、CSCD2011_2012、GEOBASE、IC、JST、PUBMED、SCOPUS、WOS、ZGKJHX、ZR、核心刊

摘  要:In springs of 1995 to 2000, plot sampling was carried out to collect information on eight habitat factors including geographic environment and human activities, etc. According to a map of navigation in middle and low Yangtze River(printed in 1995), regular sampling plots, with a circular area of 500 m in diameter and with equal water and terrestrial, were set every five kilometres along the main stream, which included areas used by Yangtze finless porpoise. A total of 1 225 kilometres of survey was conducted. 247 regular sampling plots were set, of which 66 were utilized by the finless porpoises. The habitat selection of the Yangtze finless porpoises was quantitatively analyzed by Vanderploeg and Scavia selection indices. It was found that the Yangtze finless porpoises prefer cushion waters around large, gooseneck-like, bifurcated water courses, however the selection tended to be random with the decrease of flexuousity and the width to length ratio of the riverway. The feeding grounds of the Yangtze finless porpoises are usually close to sandy areas with reedy swamps where boats traveling upstream, sand excavating, and fishing activities, etc. constitute the potential threats to the finless porpoises. We suggest that the core area of the nature reserve should focus on large bifurcated riverways with cushion waters, and large areas of reedy swamps, where the sand excavating and fishing activities should be prohibited, and the speed of boats traveling upstream must be limitede.

关 键 词:长江江豚  生境选择 自然保护区

分 类 号:Q958.1]

参考文献:

正在载入数据...

二级参考文献:

正在载入数据...

耦合文献:

正在载入数据...

引证文献:

正在载入数据...

二级引证文献:

正在载入数据...

同被引文献:

正在载入数据...

版权所有©重庆科技学院 重庆维普资讯有限公司 渝B2-20050021-7
 渝公网安备 50019002500408号 违法和不良信息举报中心