塔里木河沿岸不同生境下胡杨（Populus euphratica）群落的空间分布格局及关联性

生态学杂志

塔里木河沿岸不同生境下胡杨（Populus euphratica）群落的空间分布格局及关联性

曾勇^1,2,3,赵成义^2,4*,李传金²,郑金强²,吕光辉¹,李彦²

（¹新疆大学资源与环境科学学院，乌鲁木齐 830046；²中国科学院新疆生态与地理研究所，荒漠与绿洲生态国家重点实验室，乌鲁木齐 830011；³中国科学院大学，北京 100049；⁴南京信息工程大学土地科学研究中心，南京 210044）

出版日期:2019-11-10 发布日期:2019-11-10

Spatial distribution pattern and association of Populus euphratica community in different habitats along the Tarim River.

ZENG Yong^1,2,3, ZHAO Cheng-yi^2,4*, LI Chuan-jin², ZHENG Jin-qiang², LÜ Guang-hui1, LI Yan²

(¹College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China; ²State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; ³University of Chinese Academy of Sciences, Beijing 100049, China; ⁴Land Science Research Center, Nanjing University of Information Science & Technology, Nanjing 210044, China).

Online:2019-11-10 Published:2019-11-10

摘要/Abstract

摘要： 以塔里木河河岸边、过渡带、沙漠边缘样地调查数据为基础，采用成对相关函数g(r)分析了3个生境胡杨群落的空间分布格局及关联性。结果表明：不同生境下胡杨种群的结构特征存在差异。胡杨种群年龄结构在河岸边样地呈反“J”型，属于增长型种群；过渡带样地呈偏正态分布，属于稳定型种群；沙漠边缘样地呈典型的反“L”，属于衰退型种群。不同生境下胡杨群落的空间分布格局表现也不同。河岸边样地，花花柴（Karelinia caspia）、假苇拂子茅（Calamagrostis pseudophragmites）、芦苇（Phragmites australis）和多枝柽柳（Tamarix ramosissima）分布均呈聚集分布，而罗布麻（Apocynum venetum）主要呈随机分布；过渡带样地，罗布麻和骆驼刺（Alhagi sparsifolia）表现为聚集分布，而黑果枸杞（Lycium ruthenicum）和胡杨小尺度上呈聚集分布，随着尺度增加，表现为随机分布；沙漠边缘样地，白茎盐生草（Halogeton arachnoideus）呈聚集分布。不同生境下胡杨群落的空间关联表现也不同。河岸边样地，胡杨与假苇拂子茅、胡杨与大叶白麻（Poacynum hendersonii）、假苇拂子茅与芦苇、芦苇与多枝柽柳的关联性均为正相关；过渡带样地，铃铛刺（Halimodendron halodendron）与黑果枸杞、黑果枸杞与花花柴、黑果枸杞与铃铛刺、铃铛刺与骆驼刺、花花柴与骆驼刺、骆驼刺与花花柴、蓼子朴（Inula salsoloides）与花花柴均呈正相关，而罗布麻与多枝柽柳呈负相关；沙漠边缘样地，刺沙蓬（Salsola ruthenica）与白茎盐生草呈负关联。

Abstract: Based on the survey data from the quadrats of riverside, transitional, and desert margin zones around the Tarim River, spatial distribution patterns and associations of P. euphraticacommunity were analyzed in three habitats using paired correlation function g(r). The results showed that population structural characteristics of P. euphratica varied among different habitats. In the riverside, the age structure showed an inverted J-curve, indicating an increasing population. In the transitional zone, the age structure showed a normal curve, indicating a stable population. In the desert margin, the age structure showed an inverted L-curve, indicating a decline population. The species from the P. euphraticacommunity showed different spatial distribution patterns in different habitats. Karelinia caspica, Phragmites australis, Calamagrostis pseudophragmites, and Tamarix ramosissimawere aggregated, but Apocynum venetum was distributed roughly at random in the riverside. In the transitional zone, Apocynum venetum and Alhagi sparsifoliawere aggregated, but Lycium ruthenicum and P. euphratica were aggregated at smaller spatial scales and randomly distributed at larger spatial scales. Halogeton arachnoideuswas aggregated in desert margin. Species from the P. euphraticacommunity showed different spatial associations in different habitats. The four pairs of P. euphratica vs.C. pseudophragmites, P. euphratica vs.Poacynum hendersonii, C. pseudophragmitesvs. P. australis, and P. australis vs. T. ramosissima were positively associated in the riverside. In the transitional zone, the seven pairs of Halimodendron halodendron vs. L. ruthenicum, L. ruthenicum vs. K. caspica, L. ruthenicum vs.H. halodendron, H. halodendron vs.A. sparsifolia, K. caspica vs. A. sparsifolia, A. sparsifolia vs.K. caspica, and Inula salsoloides vs.K. caspica were positively associated, butA. venetum vs. T. ramosissima was negatively associated.Salsola ruthenicavs. H. arachnoideus was negatively associated in the desert margin zone.

曾勇,赵成义,李传金,郑金强,吕光辉,李彦. 塔里木河沿岸不同生境下胡杨（Populus euphratica）群落的空间分布格局及关联性[J]. 生态学杂志.

ZENG Yong, ZHAO Cheng-yi, LI Chuan-jin, ZHENG Jin-qiang, Lü Guang-hui, LI Yan. Spatial distribution pattern and association of Populus euphratica community in different habitats along the Tarim River.[J]. cje.