鹞落坪国家级自然保护区草本植物多样性及空间分布  

Diversity and spatial distribution of herbaceous species with deciduous broad-leaved forest in the Yaoluoping National Nature Reserve

作　　者：丁茂 郑标 王丽[1] 张金铭 周守标[1,2] 王智 DING Mao;ZHENG Biao;WANG Li;ZHANG Jinming;ZHOU Shoubiao;WANG Zhi(School of Ecology and Environment,Anhui Normal University,Wuhu 241003,China;Anhui Province Engineering Laboratory of Water and Soil Pollution Control and Remediation,Wuhu 241003,China;Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210042,China)

机构地区：[1]安徽师范大学生态与环境学院,芜湖241003 [2]安徽省水土污染治理与修复工程实验室,芜湖241003 [3]生态环境部南京环境科学研究所,南京210042

出　　处：《生态学报》2022年第19期8015-8030,共16页Acta Ecologica Sinica

基　　金：中央级科学事业单位修缮购置专项(831440)。

摘　　要：鹞落坪国家级自然保护区森林群落研究主要集中于乔木层生物多样性、群落组成与结构及其维持机制,但对保护区林下草本层植物多样性及空间结构缺乏研究。以鹞落坪国家级自然保护区内落叶阔叶林11.56 km^(2)永久大样地(以下简称大样地)林下草本植物为研究对象,探讨草本层植物多样性、空间分布格局及优势种的种间联结性和相关性。结果表明:(1)大样地内的草本植物共有52科134属195种,其中百合科、唇形科、堇菜科、菊科与毛茛科草本植物占主导作用。(2)大样地内草本植物优势种明显,多样性指数较高且整体分布较为均匀,其中北部阳坡物种多样性较低,南部阴坡、中部半阳坡的物种多样性较高。(3)七种空间格局分析方法均表明大样地内草本植物优势种呈现聚集分布。(4)大样地内10个草本优势种45个优势种对的χ^(2)检验、联结系数AC检验、Pearson相关系数检验和Spearman秩相关系数检验结果显示,种对间正联结、正相关的数量多于负联结、负相关的数量;Spearman秩相关系数检验更具灵敏性;种间联结强度与相关度较弱,说明林下草本植物种间及与环境之间关系尚未达到相对稳定状态。对鹞落坪落叶阔叶林下草本植物调查与长期监测,为深入研究林下草本植物的生态功能、对林下草本植物资源的保护利用及自然保护区管理提供理论依据。The main protection objects of the Yaoluoping Nature Reserve are typical representative forest vegetation and the national key protected, rare and endangered animal and plant resources in the Dabie Mountain area. It is also an important water conservation forest reserve in the Dabie Mountains. The total area of the reserve is 123 km^(2), which is divided into three functional areas. The core area is 21.2 km^(2)(including Shifosi-Dachuanling core area, Diaojujing core area, Qilingou core area and Duozhijian core area), the buffer area is 28.4 km^(2), and the experimental area is 73.4 km^(2). This paper took the herbaceous plants under the deciduous broad-leaved forest 11.56 km^(2) permanent sample plot in the Yaoluoping National Nature Reserve as the research objects, and then investigated the plant diversity, spatial distribution pattern, interspecific association, and correlation of dominant species in the herb layer. The main results are as follows: 1. The herbaceous plants investigated in the sample plot belong to 52 families, 134 genera and 195 species. The floristic geographical compositions of herbaceous plants in the Yaoluoping sample plot are complex, covering many distribution types. Among them, there are more temperate elements, accounting for 60.44% of the total genera. The results showed that the temperate characteristics of deciduous broad-leaved forest communities were obvious. Tropical plants accounted for 18.66% of the total genera. The herbaceous plants in the sample plot had an obvious affinity to the temperate growth environment.2. Analysis of important values of 195 herbaceous plants in plot showed that the important values of Carex breviculmis, Carex brachyathera, Carex siderosticta, Elymus kamoji, Viola acuminata, Galium hoffmeisteri, Cardamine engleriana, Cardamine macrophylla, Carex sp., and Galium bungei accounted for 58.57% of the total, and they were the dominant species in the plot. Among them, the Carex breviculmis had a significant advantage in the plot.3. Species diversity not only

关 键 词：鹞落坪自然保护区 落叶阔叶林 大样地 草本植物多样性 空间格局 种间关联性 

分 类 号：Q948[生物学—植物学]