文献类型：期刊文献

英文题名：Sampling origins and directions affect the minimum sampling area in forest plots

作者：He, Chenqi[1,2] Fan, Fan[1,2] Qiao, Xiujuan[3] Zhou, Zhang[4] Xu, Han[4] Li, Sheng[5] Zhu, Jiangling[1,2] Wang, Shaopeng[1,2] Tang, Zhiyao[1,2,6] Fang, Jingyun[1,2,6]

第一作者：He, Chenqi

通信作者：Tang, ZY[1];Fang, JY[1]

机构：[1]Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China;[2]Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing, Peoples R China;[3]Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Peoples R China;[4]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Peoples R China;[5]Peking Univ, Sch Life Sci, Beijing, Peoples R China;[6]Peking Univ, Inst Ecol, Beijing, Peoples R China

年份：2024

卷号：35

期号：1

外文期刊名：JOURNAL OF VEGETATION SCIENCE

收录：;Scopus(收录号：2-s2.0-85182468533);WOS:【SCI-EXPANDED(收录号:WOS:001142592000001)】；

基金：This study was supported by the National Natural Science Foundation of China (31988102 and 32271622). The authors declare no conflict of interest. We thank Sichuan Wanglang National Nature Reserve, Hunan Badagongshan National Nature Reserve, and Hainan Jianfengling National Nature Reserve for their support. We also thank the researchers who contributed to the construction of dynamic forest plots, tree censuses, and data sharing. We are also grateful to the anonymous reviewers and the editor for their insightful and constructive comments, which improved the manuscript.

语种：英文

外文关键词：biodiversity conservation; forest dynamic plots; heterogeneous habitat; minimum-area concepts; sampling design; species richness; species-area relationships; tree diversity in forests

摘要：QuestionsThe minimum sampling area (minimum area) is the smallest space that reflects species composition and characteristics of a plant community. The quantitative concept of minimum area is often estimated using species-area relationships (SARs) and has become the classical foundation for managing protected areas. However, sampling designs to determine the minimum area in different forest types have not been systematically evaluated.LocationChina.MethodsWe used tree census data from three forest dynamic plots, each with a size of 25-60 ha, in different climatic zones in China to determine the minimum areas of woody plants and to analyze the effects of species richness and topographic heterogeneity on the minimum areas by changing sampling origin and direction.ResultsWe found that mainly sampling design affects the estimation of woody plant species richness and required minimum area in different forest types. The estimated size of the minimum areas required was several hectares and varied significantly with sampling origin and direction, and showed a difference of approximately 1.5-2 times in the forest plots. Topographic heterogeneity significantly affected the minimum area through changes in species composition.ConclusionsSampling origin and direction should be considered when using SARs to estimate the minimum area and species diversity in communities. Such a comprehensive approach of sampling can contribute to a better understanding of vegetation characteristics and the minimum area required for a conservation census in heterogeneous environments. We used tree census data of three forest dynamic plots across China to estimate the minimum areas for woody plants. We found that the minimum areas required were several hectares and varied 1.5-2 times with sampling origin and direction in forests. This study suggests to take into account the sampling design when estimating the minimum area and species diversity.image