| 生物土壤与生态 |
|
|
|
|
| Species Diversity and Dominance Population Distribution Pattern in Oasis-Desert Ecotone |
| ZHOU Hong-hua, CHEN Ya-ning, LI Wei-hong |
| Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Xinjiang 830011, China |
|
|
|
|
Abstract Synthesis dominance rate (SDR), Richness index (R), Shannon-Wiener index (H), Simpson index (D), Pielou index (JSW), Whittaker index (βwc), Cody index (βc), Dispersion index (C), Negative binomial parameter (K), Mean crowding intensity (m*), Clumping index (I), Patchiness index (PI), Cassie index (GI) and Green index (CA) are used to analyze the species diversity and dominance population distribution pattern based on field surveying data from 30 plots along 10 sections at oasis-desert ecotone in the lower reaches of the Tarim River. The results showed that the structure and composition of these communities were simple, the dominance populations were Populus euphratica, Tamarix chinensis Lour., Lycium ruthenicum, Halostachys caspic, Karelinia caspica, Phragmites communis, Alhagi sparsifolia, Glycyrrhiza inflate, Poacynum hendersonii, and they distributed in aggregative state in responding to groundwater depth. The α-diversity indices of these communities were low, and species diversity showed gradient change. The richness index followed the order: oasis>ecotone>desert due to water resource difference in microenvironment. From ecotone to desert, the community structure changed from tree-shrub-herbage to shrub-herbage to single shrub to shrub-herbage, and to tree-shrub-herbage due to change of groundwater depth. Suggested by Whittaker index and Cody index, the β-diversity indices of these communities changed with groundwater depth gradient, showing the ecotone was the boundary between oasis species and desert species distribution. Therefore, the groundwater depth was the decision factor for species diversity and distribution pattern of dominance population at oasis-desert ecotone in the lower reaches of the Tarim River.
|
|
Received: 10 March 2008
Published: 20 July 2009
|
|
|
[1]Tilman D.The ecological consequences of changes in biodiversity:a research for general principles[J].Ecology,1999(80):1455-1474.
[2]杨慧,娄安如,高益军,等.北京东灵山地区白桦种群生活史特征与空间分布格局[J].植物生态学报,2007,31(2):272-282.
[3]张玲,袁晓颖,张东来.大、小兴安岭植物区及交错带物种多样性比较研究[J].植物研究,2007,27(3):356-360.
[4]李先琨,苏宗明,向悟生,等. 濒危植物元宝山冷杉种群结构与分布格局[J].生态学报,2002,22(12):2247-2253.
[5]Borchsenius F,Nielsen P K,Lawesson E.Vegetation structure and diversity of all ancient temperate deciduous forest in SW Denmark[J].Plant Ecology,2004,175:121-135.
[6]陈鹏,初雨,顾峰雪,等.绿洲-荒漠过渡带景观的植被与土壤特征要素的空间异质性分析[J].应用生态学,2003,14(6):904-908.
[7]张林静,岳明,张远东,等.新疆阜康绿洲-荒漠过渡带植物群落物种多样性特征[J].地理科学,2003,23(3):329-334.
[8]刘家珍,陈亚宁,李卫红,等.荒漠河岸植被的受损过程与受损机理分析[J].地理学报,2006,61(9):946-956.
[9]李卫红,郝兴明,覃新闻,等.干旱区内陆河流域荒漠河岸林群落生态过程与水文机制研究[J].中国沙漠,2008,28(6):1113-1117.
[10]Chen Yaning,Wang Qiang,Li Weihong,et al.Rational groundwater table indicated by the eco-physiological parameters of the vegetation:A case study of ecological restoration in the lower reaches of the Tarim River[J].Chinese Science Bulletin,2006,51(Supp.1):15-18.
[11]郭正刚,刘慧霞,王根绪,等.人类工程对青藏高原北部草地群落β多样性的影响[J].生态学报,2004,24(2):384-388.
[12]高贤明,马克平,黄建辉,等.北京东灵山地区植物多样性研究 Ⅺ.山地草甸卢多样性[J].生态学报,1998,18(1):24-32.
[13]张桂萍,张峰,茹文明.山西绵山植被木本植物优势种群种间关联[J].生态学杂志,2006,25(3):295-298.
[14]张绘芳,李霞.塔里木河下游胡杨种群空间分布格局分析[J].西北植物学报,2006,26(10):125-130.
[15]武玉珍,张峰.山西桑干河流域湿地植被优势种群分布格局研究[J].植物研究,2006,26(6):735-741.
[16]康华靖,陈子林,刘鹏,等.大盘山自然保护区香果树种群结构与分布格局[J].生态学报,2007,27(1):389-396.
[17]杨梅,林思祖,曹光球,等.人为干扰对常绿阔叶林主要种群分布格局的影响[J].中国生态农业学报,2007,15(1):9-11.
[18]马克平,黄建辉,于顺利,等.北京东灵山地区植物群落多样性的研究Ⅱ——丰富度均匀度和物种多样性指数[J].生态学报,1995,15(3):268-277.
[19]岳明,任彀,党高弟,等.佛坪国家级自然保护区植物群落物种多样性特征[J].生物多样性,1999,7(4):263-269.
[20]张金屯,柴宝峰,邱扬,等.晋西吕梁山严村流域撂荒地植物群落演替中的物种多样性变化[J].生物多样性,2000,8(4):378-384.
[21]李新荣,张新时.鄂尔多斯高原荒漠化草原与草原化荒漠灌木类群生物多样性的研究[J].应用生态学报,1999,10(6):665-669.
[22]白永飞,李凌浩,王其兵,等.锡林河流域草原群落植物多样性和初级生产力沿水热梯度变化的样带研究[J].植物生态学报,2000.24(6):667-673.
[23]王君厚,任培政.乌兰布和沙漠东北国家级植物群落物种样性及其生态环境[J].中国沙漠,1996,16(3):258-265.
[24]赵以莲,陈桂琛,周国英,等.青海湖鸟岛沙地植物群落物种多样性研究[J].中国沙漠,2003,23(3):295-299.
[25]魏兴琥,李森,杨萍,等.藏北高山嵩草草甸植被和多样性在沙漠化过程中的变化[J].中国沙漠,2007,27(5):750-757.
[26]杨自辉,俄有浩,方天峨,等.民勤绿洲边缘物种多样性对水资源变化的响应[J].中国沙漠,2007,27(2):278-282. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2009, Vol. 29 
