文献类型：期刊文献

英文题名：Effects of stand structure on wind speed reduction in a Metasequoia glyptostroboides shelterbelt

作者：Wu, Tonggui[1] Yu, Mukui[1] Wang, Geoff[2] Wang, Zongxing[3] Duan, Xi[1] Dong, Yi[1] Cheng, Xiangrong[1]

第一作者：吴统贵

通信作者：Wu, TG[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China;[2]Clemson Univ, Sch Agr Forestry & Environm Sci, Clemson, SC 29634 USA;[3]Forestry Tech Extens Dept Zhejiang Prov, Hangzhou 310003, Zhejiang, Peoples R China

年份：2013

卷号：87

期号：2

起止页码：251-257

外文期刊名：AGROFORESTRY SYSTEMS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000316006500001)】；

基金：The project was supported by the National Project of Scientific and Technical Supporting Programs Funded by Ministry of Science and Technology of China (No. 2009BADB2B03), the Key Foundation of Science and Technology in Zhejiang Province (No. 2011C12016), and the Natural Science Foundation of Zhejiang Province (No. LY12C16008). We are grateful for all of the support mentioned above.

语种：英文

外文关键词：Vertical structure; Horizontal structure; Shelter distance; Minimum relative wind speed; Metasequoia glyptostroboides shelterbelt

摘要：In a Metasequoia glyptostroboides coastal forest shelterbelt near Shanghai, China, we studied relationships between stand structure and wind shelter effect. We located 16 plots at intervals of 500 m along the shelterbelt and characterized both horizontal and vertical structure of each plot. Wind speed was measured within each plot and at different distances windward and leeward. We found that wind shelter effects were closely related to stand structure of the studied M. glyptostroboides shelterbelt. Stands with high basal area but intermediate crown index and intermediate proportion of large trees (LT) produced the best shelter effects, with significantly longer shelter distance (d70, shelter distance which the wind speed U does not exceed 70 % of U (0)) and slightly lower minimum relative wind speed (U (m) /U (0)). Simple structural indices that can be easily measured in the field were good predictors of the shelter effect. LT was the best predictor of d70, while basal area at ground level was the best predictor of U (m)/U (0). The relationships between stand structure and shelter effect provides a practical guideline to the design, construction and management of forest shelterbelts. In order to provide the best shelter effects, high basal area of > 50 m(2) ha(-1) at ground level or > 33 m(2) ha(-1) at breast height coupled with an intermediate LT value of about 60 % should be maintained for the studied M. glyptostroboides shelterbelt.