| 野生扬子鳄洞穴口的位置选择 |
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| 引用本文： | 丁由中,王小明,何利军,王正寰,吴巍,陶峰勇,邵民.野生扬子鳄洞穴口的位置选择[J].动物学研究,2003,24(4):254-258. |
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| 作者姓名： | 丁由中 王小明 何利军 王正寰 吴巍 陶峰勇 邵民 |
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| 作者单位： | 1. 华东师范大学生命科学学院,上海,200062
2. 安徽扬子鳄国家级自然保护区,安徽,宣州,242000 |
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| 基金项目： | 上海市“曙光计划”项目 ( 98SG0 8)，美国野生动物保护协会 (WCS)，上海市重点学科基金，教育部跨世纪优秀人才培
养计划，国家“2 11”重点建设生态学科基金资助项目 |
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| 摘 要： | 1999年至 2 0 0 2年 7～ 10月内的 4个时段 ,在安徽扬子鳄国家级自然保护区内调查发现野生扬子鳄洞穴 4 0个 (现用 2 4个 ,遗弃 16个 )。对洞口的方向、隐蔽程度、距水面高度、与水源距离及与村落距离等 5个可能影响扬子鳄洞穴选择的环境变量做了测定。结果表明 :87 5 %的洞口在水面 0～ 0 5m及 <0m ,85 0 %距水源 <5m ,32 5 %朝北 ,72 5 %植被覆盖度≤ 70 % ,4 2 5 %距村落 <10 0m ;距水面高度、与水源距离、洞口方向和隐蔽程度的主成分贡献率依次降低 ,累计达 76 6 %。方便入水是洞口位置选择的主要因素
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| 关 键 词： | 扬子鳄 洞穴口 环境 位置选择 |
| 文章编号： | 0254-5853(2003)04-0254-05 |
Position of Burrow Entrances in Wild Chinese Alligators |
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| DING You zhong ,WANG Xiao ming ,HE Li jun ,WANG Zheng huan ,WU Wei ,TAO Feng yong ,SHAO Min.Position of Burrow Entrances in Wild Chinese Alligators[J].Zoological Research,2003,24(4):254-258. |
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| Authors: | DING You zhong WANG Xiao ming HE Li jun WANG Zheng huan WU Wei TAO Feng yong SHAO Min |
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| Affiliation: | DING You zhong 1,WANG Xiao ming 1,3,HE Li jun 1,WANG Zheng huan 1,WU Wei 1,TAO Feng yong 1,SHAO Min 2 |
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| Abstract: | The burrows of Chinese alligator ( Alligator sinensis ) were surveyed in Anhui National Natural Chinese Alligator Reserve in four periods within Jul -Oct.from 1999 to 2002.Of the found burrows,24 were in use,and 16 were deserted.Five environmental variables regarding the positions of the burrow entrances were measured.A large percent (87 5%) of entrances were located about the water surface (0-0 5 m and <0 m);85 0% were within 5 m from the water body;32 5% were towards north;72 5% were vegetation covered less than 70%;and 42 5% were within 100 m from villages.Factors such as the height above water surface,distance to water body,entrance direction,and degree of shelter contributed for 76 6% of the variance in total,and they were in descending order in the contribution.The convenience entering water body is the main factor for Chinese alligators to select the entrances. |
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| Keywords: | Chinese alligator ( Alligator sinensis ) Burrow entrance Environment |
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