内蒙古辉河自然保护区植物功能型的空间变异性研究  

Spatial Variation of Plant Functional Types in Hui River Nature Reserve,Inner Mongolia

作　　者：马建军[1,2] 高吉喜[2] 姚虹[3] 田美荣[2] 

机构地区：[1]南京大学生命科学学院,江苏南京210008 [2]环境保护部南京环境科学研究所,江苏南京210042 [3]廊坊师范学院生命科学学院,河北廊坊065000

出　　处：《生态与农村环境学报》2014年第2期182-188,共7页Journal of Ecology and Rural Environment

基　　金：环保公益性行业科研专项(201209027)

摘　　要：为了揭示辉河国家级自然保护区不同功能区植物功能型及生物多样性的变化特征,采用样带与样地结合的方法在核心区、缓冲区和实验区进行植被调查。选取3块生境条件基本相同的样地(面积为250 m×250 m),每块样地设置3条样带,每条样带上设置8个样方(面积为1 m×1 m)。分析丰富度指数、多样性指数、群落生物量和生活型植物功能型在不同功能区的空间变异性。结果表明,研究区植物以多年生杂类草和多年生禾草为主;在核心区和缓冲区,多年生禾草和多年生杂类草的物种数较多,一年生草本极少;在实验区,多年生禾草和多年生杂类草等功能型的物种数明显减少,而一年生草本增加。从核心区、缓冲区到实验区,灌木的优势度逐渐增加,与核心区相比,缓冲区多年生禾草和多年生杂类草的优势度无显著差异(P>0.05);实验区多年生禾草和多年生杂类草的优势度均显著低于核心区相应功能型的优势度(P<0.05),而一年生草本的优势度从核心区、缓冲区到实验区依次增加。多年生禾草、多年生杂类草的生物量及群落总生物量从核心区、缓冲区到实验区依次减少;灌木和一年生草本的生物量则依次增加。缓冲区物种Patrick丰富度指数最高,且显著高于实验区和核心区(P<0.05);与核心区相比,缓冲区Shannon-Wiener多样性指数和Pielou均匀度指数均无显著差异(P>0.05)。To study spatial variation of plant functional type and biodiversity in various functional zones of the Hui RiverNational Nature Reserve, vegetation survey were conducted in the core zone, the buffer zone, and the experiment zone inthe reserve, using the sample transects and plots method. Three plots （250 m× 250 m）, almost the same in habitat condi-tion, were selected, and in each plot three transects and in each transect eight quadrats （1 m× 1 m） were set up for anal-ysis of species richness index, species diversity index, biomass and spatial variability of life-form plant functional types indifferent functional areas of the reserve. Results show that in the study area, the vegetation was dominated with perennialforbs and perennial grasses; in the core and buffer zone, the vegetation was also dominated with a huge variety of perennialgrasses and perennial forbs, and only dotted with some annual herbs, while in the experiment zone, the number of functional species, like perennial grasses and perennial forbs, declined markedly,

关 键 词：植物功能型 空间变异性 辉河自然保护区 内蒙古 

分 类 号：Q948.11[生物学—植物学]