摘要
2011和2012年夏季,采用无线电跟踪技术跟踪了8只野生黑颈长尾雉(6♂,2♀),野外共测量了204个10 m×10 m样方的20个生态因子,其中利用样方111个,未利用样方93个。采用独立样本的t检验或非参数Mann-Whitney U定量分析表明:黑颈长尾雉夏季栖息地利用和未利用样方的生态因子坡位、与林缘距离、草本盖度、灌木高度、草本密度和乔木胸径差异不显著(P>0.05),其余的生态因子在利用和未利用样方存在显著差异(P<0.05)。主成分分析显示:夏季特征值大于1的主分量共有5个,其累计贡献率达到64.23%,第1主成分为食物因素,是影响黑颈长尾雉夏季栖息地选择的主要因素;其余主成分分别为安全因素、干扰因素、地理因素和水源因素。不同生境斑块类型中食物资源的可用性影响夏季黑颈长尾雉栖息地选择。
The habitat preference of Mrs Hume＇s Pheasant （Syrmaticus humiae） in Jinzhongshan Nature Reserve of Guangxi was studied in the summers of 2011 and 2012. In field, we used radio transmitters to track 8 birds and then confirmed the sign sites, and 20 ecological factors were measured in 111 sign quadrats （10 m× 10 m） and 93 control quadrats, respectively. Qualitative and quantitative analysis methods were used to test the differences between the two datasets of sign and control quadrats. Our results demonstrated that slope position, distance to forest edge, herb coverage, shrub height, herb density, and tree diameter at breast height had no significant differences （P〉0.05） between the two kinds of quadrats, while other factors existed significant differences （P〈0.05）. The principal components analysis showed that there were five most important factors （with eigenvalue 〉1） dominating the Mrs Hume＇s Pheasant＇s habitat selection in summer. The total eigenvalue contribution of the five factors was 64.23%. The first principal component belonging to food factor was a major factor affecting summer habitat selection of Mrs Hume＇s Pheasant; the other four principal components were safety, disturbance, geographical and water factors. We suggested that food resource availability in different habitat patches was the vital factor affecting the habitat preference of Mrs Hume＇s Pheasant.
出处
《生态学杂志》
CAS
CSCD
北大核心
2014年第4期1047-1052,共6页
Chinese Journal of Ecology
基金
国家自然科学基金项目(31000965)
江苏高校优势学科建设工程项目
广西高等学校科研项目(2013YB204)资助
关键词
黑颈长尾雉
金钟山
栖息地选择
片段化
Mrs Hume＇s Pheasant Jinzhong Mountain habitat selection fragmentation.
