文献类型：期刊文献

英文题名：The complexity of vegetation structure decreases the seed-hanging ability of the vegetation layer during secondary wind dispersal

作者：Tian, Liang[1,2] Liang, Wei[1] Liu, Zhimin[1] Liu, Minghu[3] Phartyal, Shyam S.[4] Zong, Lu[1,2] Xin, Zhiming[3] Ba, Chaoqun[1,2] Li, Xiangrong[1,2] Liu, Yuting[3] Wang, Jianjun[3] Zhou, Quanlai[1] Qin, Xuanping[5] Zhai, Shanshan[1,2]

第一作者：Tian, Liang

通信作者：Liu, ZM[1]

机构：[1]Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Chinese Acad Forest, Expt Ctr Desert Forestry, Dengkou 015200, Peoples R China;[4]Nalanda Univ, Sch Ecol & Environm Studies, Rajgir 803116, Bihar, India;[5]Zaozhuang Univ, Zaozhuang 277101, Peoples R China

年份：2023

卷号：37

期号：6

起止页码：1671-1680

外文期刊名：TREES-STRUCTURE AND FUNCTION

收录：;EI(收录号：20233814742183);Scopus(收录号：2-s2.0-85171253409);WOS:【SCI-EXPANDED(收录号:WOS:001065967300001)】；

基金：We thank the Experimental Center of Desert Forestry, Chinese Academy of Forestry and the First Forestry Station for providing accommodation during the experiment.

语种：英文

外文关键词：Horizontal pattern of vegetation; Plant life-form; Seed hanging; Seed morphology; Seed secondary dispersal; Wind tunnel

摘要：Key messageFor the first time the interaction of vegetation structure, wind speed and seed attributes on seed suspension on the plants was quantified by means of wind tunnel experiments.AbstractThe seed hanging above ground, a part of the vertical distribution and a determinant of seed fate, may be affected by vegetation structure. However, how seed hanging on vegetation layers during secondary wind dispersal is linked to vegetation feature has rarely been studied. We investigated the effect of vegetation structure on seed hanging in a wind tunnel. The number of hanging seeds during secondary dispersal of 30 species with various attributes (mass, height, width, length, shape, projected area, wing loading, terminal velocity) was measured in four vegetation structures (pure herb one-layer vegetation, pure shrub one-layer vegetation, herb + shrub uniform two-layer vegetation, and herb + shrub aggregated two-layer vegetation). The proportions of seeds on vegetation layer in one-layer vegetation were significantly more than in two-layer vegetation. The correlation between seed morphological attributes (mass, height, width, length, shape index, and projected area) and the proportion of hanging seeds on vegetation layers differed between the herb and shrub layer but was not affected by vegetation's horizontal and vertical distribution. Our study indicates that the complexity of vegetation structure decreases the seed hanging on the vegetation layer, and the role of seed attributes in determining seed hanging on vegetation layer is modified more largely by the life-form rather than by the spatial structure of vegetation. It is the first systematical study on how vegetation structure affects seed hanging, deeply enhancing our understanding of the effects of vegetation structure on vertical seed distribution.