文献类型：期刊文献

英文题名：Assessing the structure and stability of street trees in Lhasa, China

作者：Yang, Jun[1] Zhou, Jinxing[2] Ke, Yuzhou[3] Xiao, Jianmin[4]

第一作者：Yang, Jun

通信作者：Yang, J[1]

机构：[1]Beijing Forestry Univ, Coll Forestry, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[3]Demonstrat Base Forestry Seedling Sci & Tech Xiza, Lhasa 850000, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forestry Policy & Informat, Beijing 100091, Peoples R China

年份：2012

卷号：11

期号：4

起止页码：432-438

外文期刊名：URBAN FORESTRY & URBAN GREENING

收录：;Scopus(收录号：2-s2.0-84868195268);WOS:【SSCI(收录号:WOS:000312922500010)，SCI-EXPANDED(收录号:WOS:000312922500010)】；

基金：We thank Dr. Joe McBride from the University of California at Berkeley for his helpful comments on street trees in Lhasa. We also want to thank the staff members from the Demonstration Base of Forestry Seedling Science & Technique in Xizang Autonomous Region for helping to collect the field data. Financial support from the State Administration of Forestry of China (Grant Nos. 2011473 and 201104035) is acknowledged.

语种：英文

外文关键词：Climate matching; High-altitude; Low temperature; Solar radiation; Wind

摘要：Street trees can provide important environmental services to residents living in high-altitude cities. Nevertheless the performance of street trees in this unique environment is largely unknown. This article examines the impact of high-altitude environments on the growth of street trees through a case study in Lhasa, China. The structure, species composition, and health condition of street trees in Lhasa were surveyed using a representative sampling approach. The history of street tree programs and factors that affect the health of street trees was also analyzed. The results showed that there were 24 species and cultivars in 2032 sampled street trees. The street tree population in Lhasa contained a significant number of small trees, which was due to the large-scale planting program initiated in recent years. The street tree population in Lhasa was not very stable due to the uneven age distribution. The health conditions of street trees were affected by climatic factors as well as by management practices. We concluded that unfavorable environmental conditions in high-altitude cities may affect the sustainability of street tree populations to some degree but that human management of the street tree population is a more significant factor. (C) 2012 Elsevier GmbH. All rights reserved.