钱江源国家公园木本植物物种多样性空间分布格局  

Spatial patterns in woody species diversity in the Qianjiangyuan National Park

作　　者：陈声文 任海保[2,3] 童光蓉 王宁宁 蓝文超 薛建华 米湘成[2,3] Shengwen Chen;Haibao Ren;Guangrong Tong;Ningning Wang;Wenchao Lan;Jianhua Xue;Xiangcheng Mi(Qianjiangyuan National Park Administration,Kaihua,Zhejiang 324300;Zhejiang Qianjiangyuan Forest Biodiversity National Observation and Research Station,State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093;China National Botanical Garden,Beijing 100093)

机构地区：[1]钱江源国家公园管理局,浙江开化324300 [2]中国科学院植物研究所植被与环境变化国家重点实验室浙江钱江源森林生物多样性国家野外科学观测研究站,北京100093 [3]国家植物园,北京100093

出　　处：《生物多样性》2023年第7期1-13,共13页Biodiversity Science

基　　金：钱江源国家公园生态资源保护中心项目;国家自然科学基金(41371074)。

摘　　要：以数据为支撑的物种多样性空间分布是自然保护地适应性保护和管理的基础,但当前大多数自然保护地缺乏全域物种多样性观测数据。本研究以钱江源国家公园全域663个20 m×20 m木本植物样方调查数据为基础,分析了国家公园内观测物种丰富度、稀疏物种丰富度、胸高断面积和树木个体数量的空间变化,比较了这些变量在国家公园各功能区块间的差异。结果显示木本植物物种多样性的热点分布区与钱江源国家公园核心保护区基本匹配。两个物种丰富度在核心保护区古田山区块和长何齐区块及一般控制区古田-苏庄区块最大,三者的观测物种丰富度无显著差异(P>0.05),古田山区块和古田-苏庄区块的稀疏物种丰富度无显著差异,但均显著大于长何齐区块;古田山区块和古田-苏庄区块的两个物种丰富度指标变异程度小于其他区块,且这两个区块间无显著差异(P>0.05)。齐溪区块、长何齐区块和古田山区块胸高断面积大于其他区块,古田-苏庄区块次之,前三者无显著差异,古田-苏庄区块显著小于长何齐区块和古田山区块。古田山区块和古田-苏庄区块树木个体数量最小。长何齐区块齐溪片区部分胸高断面积大、个体数量小,而在长虹和何田片区胸高断面积小、个体数量大。一般控制区长虹-何田区块和古田-洪源区块两个物种丰富度最小,胸高断面积最小。结果表明,从生物多样性角度来看钱江源国家公园的功能分区基本合理,扩展了对国家公园物种多样性热点和保护空缺的认识:古田山区块木本植物个体大、物种最丰富,与其毗邻的一般控制区古田-苏庄区块物种同样丰富、个体略小,可将其纳入保护核心区以利于钱江源国家公园主要生态系统完整性保护;核心保护区长何齐区块长虹和何田片区物种多样性低、个体小、密度大,待加强保护和修复;长虹-何田区块和古田-�Aims:Data-based knowledge of species diversity distribution in natural reserves is fundamental for the adaptive protection and management of natural reserves.However,species diversity patterns have been rarely examined comprehensively across the entire areas of majority of natural reserves.This study aims to explore spatial variation in woody species diversity across the Qianjiangyuan National Park,as well as among subareas based on functional divisions.Methods:A total of 663 plots,each measuring 20 m×20 m,were surveyed across the national park.Within these plots,all individuals of DBH(diameter at breast height)≥1 cm were identified to species and measured for DBH.Using this comprehensive dataset,we analyzed and presented the spatial pattern in observed species richness,rarefaction species richness,cross-sectional area at breast height(ADBH),and the number of tree individual number across the national park.Furthermore,we compared those variables among subareas based on functional divisions,emplying various statistical comparison techniques such as z-test,Max-t test,Siegel-Tukey test,and Fligner-Killeen test.These analytical methods allowed us to explore and understand the difference in the aforementioned variables between different functional divisions within the national park.Results:The distribution of hotspots for woody species diversity basically matched core protection areas of the national park.Among the subareas,the Gutian subarea(GTs),Changheqi subarea(CHQs),and Gutian-Suzhuang subarea(GSs)showed the highest levels of observed and rarefaction species richness.There were no significant differences in observed species richness among these three subareas,and rarefaction species richness was also statistically similar for GTs and GSs,both of which were higher than CHQs.The variations in species richness indices were the smallest for GTs and GSs.Regarding the ADBH,the Qixi subarea(QXs),CHQs,and GTs had the largest values,with no significant difference among them.However,GSs had a significantly smaller ADBH

关 键 词：观测物种丰富度 稀疏物种丰富度 亚热带常绿阔叶林 生物多样性保护 功能分区 生物多样性热点区域 

分 类 号：Q948[生物学—植物学]