| 内蒙古阿拉善地区沙米自然分布格局特征研究 |
| |
| 引用本文： | 赵敏杰,陶季,石莎,冯金朝.内蒙古阿拉善地区沙米自然分布格局特征研究[J].中央民族大学学报(自然科学版),2008(Z1):116-120. |
| |
| 作者姓名： | 赵敏杰 陶季 石莎 冯金朝 |
| |
| 作者单位： | 中央民族大学生命与环境科学学院中国民族地区资源环境保护研究所; |
| |
| 基金项目： | 国家自然科学基金项目(No.30570300); 中央民族大学“985工程”(No.CUN985-3-3); “111工程”项目基金资助 |
| |
| 摘 要： | 本文根据野外调查的样地资料,应用方差/均值比率法、聚集指数、平均拥挤度、聚块性指数、Green指数和负二项分布的聚集强度等方法,研究了内蒙古阿拉善左旗境内的沙米种群的分布格局并分析格局形成的原因.结果表明:沙米的分布格局属于聚集分布,但其在不同类型地域的聚集强度有差异.
|
| 关 键 词： | 沙米 种群分布格局 方差/均值比率法 聚集强度指数 |
Distribution Pattern of Agriophyllum squarrosum in Alashan Area of Inner Mongolia |
| |
| ZHAO Min-jie,TAO Ji,SHI Sha,FENG Jin-chao.Distribution Pattern of Agriophyllum squarrosum in Alashan Area of Inner Mongolia[J].Journal of The Central University for Nationalities(Natural Sciences Edition),2008(Z1):116-120. |
| |
| Authors: | ZHAO Min-jie TAO Ji SHI Sha FENG Jin-chao |
| |
| Institution: | ZHAO Min-jie,TAO Ji,SHI Sha,FENG Jin-chao(College of Life , Environmental Sciences,The Central University for Nationalities,Beijing 100081,China,Institute of Resource , Environment Protection for Minoritary Area of China,China) |
| |
| Abstract: | Based on the data from the field investigation,the distribution pattern of Agriophyllum squarrosum population in Alashan area of Inner Mongolia,was studied by using v/m(dispersal index) ratio t-test,clump intensity,mean crowding,patchiness index,Green's index and the intensity index k of negative binomial distribution.The cause involved with the pattern was analyzed.The results showed that the pattern of A.squarrosum population was all clumped;however,they were different in clump intensity. |
| |
| Keywords: | Agriophyllum squarrosum population distribution pattern Variance/Mean value Clumping Degree Index |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
