| 长白山云冷杉针阔混交林径阶多样性指数对比 |
| |
| 引用本文： | 何列艳,亢新刚,赵俊卉,高延,冯启祥.长白山云冷杉针阔混交林径阶多样性指数对比[J].浙江林学院学报,2011,28(3):432-438. |
| |
| 作者姓名： | 何列艳 亢新刚 赵俊卉 高延 冯启祥 |
| |
| 作者单位： | 1. 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083
2. 吉林省汪清县林业局,吉林汪清,133200 |
| |
| 基金项目： | 林业公益性行业科研项目，"十一五"国家科技支撑计划项目 |
| |
| 摘 要： | 径阶多样性是林分结构多样性的一个重要方面,并影响森林的经济、生态、社会效益。利用7个常用的多样性指数计算了长白山云杉Picea koraiensis冷杉Abies holophylla针阔混交林不同采伐强度采伐前后的径阶多样性指数值,并对各指数的判别能力及对样本大小的敏感性进行了评价。结果表明：在判别能力上Margalef指数、Shannon指数和Gini指数较好,但是Margalef指数和Shannon指数受样本的影响较大,综合来说Gini指数评价效果较好。通过比较不同采伐强度采伐前后各指数值的变动得出,当采伐强度为20%～30%时,径阶多样性变大,而当采伐强度为40%时,径阶多样性反而减小。采用多样性指数来表示林分的径阶多样性可用于指导森林经营,如比较不同林分的径阶多样性、评估林分或景观水平在一定时间内树木大小多样性变化以及比较不同的经营措施对林分径阶多样性的影响等。表6参18
|
| 关 键 词： | 森林测计学 径阶多样性 多样性指数 判别能力 样本大小 长白山 |
Diameter class diversity indices for spruce-fir conifer and broadleaf mixed stands in the Changbai Mountains |
| |
| HE Lie-yan,KANG Xin-gang,ZHAO Jun-hui,GAO Yan,FENG Qi-xiang.Diameter class diversity indices for spruce-fir conifer and broadleaf mixed stands in the Changbai Mountains[J].Journal of Zhejiang Forestry College,2011,28(3):432-438. |
| |
| Authors: | HE Lie-yan KANG Xin-gang ZHAO Jun-hui GAO Yan FENG Qi-xiang |
| |
| Institution: | HE Lie-yan1,KANG Xin-gang1,ZHAO Jun-hui1,GAO Yan2,FENG Qi-xiang2(1.Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,100083 Beijing,China,2.Forest Enterprise of Wangqing County,Wangqing 133200,Jilin,China) |
| |
| Abstract: | Diameter class diversity,as an important part of structural diversity within a stand,affects the economic,ecological,and social value of forests.The objective of this paper is to evaluate different diameter indices describing diameter class diversity based on discriminant ability and sensitivity to sample size.Seven commonly used diversity indices:the Margalef index,Shannon index,Gini coefficient,Simpson index,Berger-parker index,Pielou evenness and Shannon evenness were calculated for 4 spruce-fir conifer ... |
| |
| Keywords: | forest mensuration diameter class diversity diversity indices discriminant ability sample size Changbai Mountains |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
