长江流域资源与环境 >> 2014, Vol. 23 >> Issue (07): 923-.doi: 10.11870/cjlyzyyhj201407005

• 自然资源 • 上一篇    下一篇

赣江河岸带植被的数量分析

刘以珍,张祖芳,蔡奇英,陈明华,葛刚   

  1. (1南昌大学生命科学与食品工程学院,江西 南昌 330031;2南昌大学流域生态研究所,江西 南昌 330031;
    3南昌大学鄱阳湖环境与资源利用教育部重点实验室,江西 南昌 330047)
  • 出版日期:2014-07-20

STRUCTURE AND COMPOSITION OF RIPARIAN VEGETATION IN GAN RIVER

LIU Yizhen1, ZHANG Zufang1, CAI Qiying1, CHEN Minghua3, GE Gang1,2   

  1. (1 College of Life Science and Food Engineering, Nanchang University, Nanchang 330031, China;
    2 Institute of Stream Ecology, Nanchang University, Nanchang 330031, China;
    [JP3]3 The Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education in Nanchang University, Nanchang 330047, China
  • Online:2014-07-20

摘要:

河岸带是河流—陆地生态系统的重要生态交错带,具有独特的生态系统结构和功能。基于植物群落的野外标准样方调查,采用双向指示种分析(TWINSPAN)和除趋势对应分析(DCA)的多元分析方法,对赣江河岸带植物群落进行数量分类与排序。TWINSPAN将所调查的109个样方分为7组。DCA排序将TWINSPAN分成7组的第1和2组合成了一个植被类型,其余类型与TWINSPAN分类的结果比较一致。结合分类与排序结果,可将赣江河岸带植被分为6个植被类型:河岸带草丛、河岸落叶阔叶群落、河漫滩草甸、河岸常绿阔叶林、河岸针阔混交林、岗地马尾松林,这6个植被类型在赣江河岸带有明显的分布格局。赣江河岸带植被为典型的隐域性植被,然而其物种组成又兼具中亚热带常绿阔叶林地带的烙印。受人为活动影响,河岸带植被结构及其功能均发生退化。因此,亟需加强河岸带恢复重建和生态系统管理

Abstract:

Riparian zones are the interfaces between terrestrial and aquatic ecosystems We examined the vegetation of riparian areas in Gan River of the Poyang Lake Stream, focusing on how persistent human disturbance and riparian geomorphology influence the structure and composition of groundflora vegetation We collected data from 109 standard samples among three different disturbance types and reaches in Gan River Stream Along each samples we measured: (1) overstory basal area, species composition, and canopy closure on a series of 400 m2 plots; (2) under story species composition and canopy on a series of 36 m2 plots; (3) herb communities on a series of 1 m2 plots; (4) disturbed and physiographic data (eg longitude and latitude, elevation, gradient, river width, bank height, flow velocity). Based on the field survey data, the communities on Gan River riparian were classified and ordinated by multivariate statistical analysis of twoway indicator species analysis (TWINSPAN) and detrended correspondence analysis (DCA). As a result, the vegetation of Gan River riparian classified the samples into six vegetation types: riparian ruderal grasses, riparian deciduous communities, floodplain meadow, riparian broadleaved evergreen communities, riparian temperate mixed forest, Pinus massoniana communities Using correlation analysis for DCA two axis and environmental factors, the factors of gradient, height of riparian, disturbance methods, slope has the significant correlation with AX1, but the factors of elevation, gradient, slope has the significant correlation with AX2. It is suggested that soil moisture, landform and disturbance were the important factors for understanding the Gan River vegetation patterns This six vegetation types has obvious distribution pattern, rivermargin tussock, floodplain meadow and riparian deciduous communities distributed in middle and lower reaches, and other three types of vegetation distributed in upper middle valley riparian The riparian zone vegetation of Gan River is a typical intrazonal ecosystem dominated by Cynodon dactylon, Vitex negundo var cannabifolia, Cinnamomum camphora and so on, but it has its only zonal characteristic, such as C camphora, Celtis sinensis, Phyllostachys heterocycla etc are the dominant species of overstory, and this species are typical subtropical forest component species Additionally, affected by human activities, such as the nonpoint source pollutant input from agricultural production and bank duratect from urbanization, the riparian degraded in structure and function. Thus,we suggest that riparian areas may require reestablishment or restoration solution and different management strategies

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 张昌顺,李 昆,马姜明,郑志新. 施肥对印楝人工林生长及土壤肥力的影响[J]. 长江流域资源与环境, 2007, 16(3): 329 .
[2] 周金星, 魏 远, 漆良华, 张旭东. 基于ISODATA法的三峡库区生态区划[J]. 长江流域资源与环境, 2008, 17(3): 446 .
[3] 张 征,李 今,梁 威,吴振斌. 拟除虫菊酯杀虫剂对水生态系统的毒性作用[J]. 长江流域资源与环境, 2006, 15(1): 125 -130 .
[4] 刘英华,张世熔, 张素兰, 魏 甦, 肖鹏飞. 成都平原地下水硝酸盐含量空间变异研究[J]. 长江流域资源与环境, 2005, 14(1): 114 -118 .
[5] 栾青杉, 孙军. 2005年秋季长江口及其邻近水域浮游植物群集[J]. 长江流域资源与环境, 2010, 19(2): 202 .
[6] 雷丽萍, 佘 廉, 吴国斌. 基于事故树的三峡库区水体污染公共安全事件诱因分析[J]. 长江流域资源与环境, 2010, 19(03): 318 .
[7] 邝婵娟. 湘鄂赣农业资源与专业化区域化方向[J]. 长江流域资源与环境, 1992, 1(1): 5 .
[8] 罗莎, 胡鸿兴, 成水平, 贺锋, 吴振??20. 武汉市金银湖水鸟多样性及其与水环境关系的初步研究[J]. 长江流域资源与环境, 2010, 19(06): 671 .
[9] 张利平,秦琳琳,张迪,曾思栋. 南水北调中线水源区与海河受水区旱涝遭遇研究[J]. 长江流域资源与环境, 2010, 19(8): 940 .
[10] 刘毅, 陶勇, 万开元, 张过师, 陈树森, 陈防. 丹江口库区坡耕地柑桔园不同覆盖方式下地表径流氮磷流失特征[J]. 长江流域资源与环境, 2010, 19(11): 1340 .