文献类型：期刊文献

英文题名：Diversity of Understory Communities in Boreal Forests: Influences of Forest Type, Latitude, and Spatial Scale

作者：Jin, Yu-Song[1] Hu, Yu-Kun[2] Wang, Jing[2] Liu, Dan-Dan[2] Lin, Ying-Hua[2] Liu, Guang[3] Zhang, Yun-Hui[4] Zhou, Zhi-Qiang[1]

第一作者：Jin, Yu-Song

通信作者：Zhou, ZQ[1];Lin, YH[2]

机构：[1]Northeast Forestry Univ, Key Lab Forest Plant Ecol, Minist Educ, Harbin 150040, Heilongjiang, Peoples R China;[2]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[3]Daxinganling Forestry Grp, Res Inst Agr & Forestry, Jiagedaqi 165000, Peoples R China;[4]Bur Silviculture Greater Xingan Mt, Jiagedaqi 165000, Peoples R China

年份：2019

卷号：10

期号：11

外文期刊名：FORESTS

收录：;EI(收录号：20194807740050);Scopus(收录号：2-s2.0-85075346701);WOS:【SCI-EXPANDED(收录号:WOS:000502262700069)】；

基金：This research was funded by the National Natural Science Foundation of China (grand number 31570603), the Special Fund for Forestry-Scientific Research in the Public Interest (grant number 201104066) and the Fundamental Research Funds for the Central Universities (grand number 2572017AA22).

语种：英文

外文关键词：beta diversity; boreal forests; broadleaf; coniferous; dissimilarity; environmental heterogeneity; species diversity; spatial scales; Vaccinium uliginosum communities

摘要：Understory vegetation hosts high biodiversity and plays a critical role in the ecosystem processes of boreal forests. However, the drivers of understory plant diversity in this high-latitude ecosystem remain uncertain. To investigate the influences of forest type and latitude on understory beta diversity at different scales, we quantified the species composition of Vaccinium uliginosum Linnaeus communities under broadleaf and coniferous forests at two latitudes at the quadrat (2 x 2 m) and plot (10 x 10 m) scales in the Greater Xing'an Mountains, NE China. At the quadrat scale, species alpha diversity of V. uliginosum communities was higher in broadleaf forests than that in coniferous forests at both latitudes. The differences in species beta diversity (the SOrensen's dissimilarity) in two forest types depended on the latitude: beta diversity in broadleaf forests was higher than that in coniferous forests at the higher latitude, while beta diversity in coniferous forests was higher at the lower latitude. At the plot scale, alpha and beta diversity of V. uliginosum communities decreased from broadleaf forests to coniferous forests at the higher latitude, and they did not show significant differences between forest types at the lower latitude. These results indicate the interactive effects of forest type and latitude on beta diversity of understory vegetation. Moreover, the influences of forest type and latitude on species alpha and beta diversity were different across the two spatial scales, suggesting that the assembly mechanisms underlying species diversity may be different at different scales. Understanding the maintenance of understory vegetation diversity will benefit the conservation and management of boreal forests.