首页 | 本学科首页   官方微博 | 高级检索  
     

秦岭皇冠优势灌木苦糖果的空间分布格局及种内种间关联
引用本文:韩安霞,邱婧,何春梅,尹秋龙,贾仕宏,罗颖,李晨璐,郝占庆. 秦岭皇冠优势灌木苦糖果的空间分布格局及种内种间关联[J]. 应用生态学报, 2022, 33(8): 2027-2034. DOI: 10.13287/j.1001-9332.202208.003
作者姓名:韩安霞  邱婧  何春梅  尹秋龙  贾仕宏  罗颖  李晨璐  郝占庆
作者单位:西北工业大学生态环境学院, 西安 710129
基金项目:国家自然科学基金项目(32001171, 32001120)和中国博士后科学基金项目(2020M680158)资助。
摘    要:以秦岭皇冠暖温性落叶阔叶林25 hm2森林样地中的优势灌木苦糖果为对象,研究了苦糖果不同径级个体的空间分布格局以及种内种间关系。结果表明: 苦糖果径级结构呈现出下宽上窄的金字塔型,小径级植株数量最多,更新状态较好,处于稳定增长阶段,有利于群落更新和演替。以Ripley's K函数为基础,采用单变量和双变量成对相关函数,在3个零模型(完全空间随机模型、异质泊松模型和先决条件模型)的处理下,树种整体和不同径级以聚集分布为主,且聚集程度随研究尺度的加大而逐渐减小,逐渐趋向随机分布。受到生境异质性、扩散限制、负密度制约等影响,种内不同径级个体之间以正关联为主,但也有一定程度的无关联,未出现负关联的情况。种间关系较为复杂,既有无关联,也有正关联和负关联,但以负关联和无关联为主。

关 键 词:点格局  空间分布  空间关联  生境异质性  
收稿时间:2021-11-10

Spatial distribution patterns and intraspecific and interspecific associations of dominant shrub species Lonicera fragrantissima var. lancifolia in Huangguan of Qinling Mountains,China
HAN An-xia,QIU Jing,HE Chun-mei,YIN Qiu-long,JIA Shi-hong,LUO Ying,LI Chen-lu,HAO Zhan-qing. Spatial distribution patterns and intraspecific and interspecific associations of dominant shrub species Lonicera fragrantissima var. lancifolia in Huangguan of Qinling Mountains,China[J]. The journal of applied ecology, 2022, 33(8): 2027-2034. DOI: 10.13287/j.1001-9332.202208.003
Authors:HAN An-xia  QIU Jing  HE Chun-mei  YIN Qiu-long  JIA Shi-hong  LUO Ying  LI Chen-lu  HAO Zhan-qing
Affiliation:College of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, China
Abstract:In this study, the spatial distribution patterns of individuals with different diameter classes of dominant shrub Lonicera fragrantissima var. lancifolia and the intraspecific and interspecific relationships were analyzed in Qinling Huangguan Plot. The results showed that the diameter class structure of L. fragrantissima var. lancifolia showed a pyramid shape, with a wide bottom and a narrow top. The number of small-diameter class individuals was the largest, showing a good state of renewal and a stable growth, which was conducive to community renewal and succession. Based on Ripley's K function, using univariate and bivariate paired correlation functions, under complete spatial randomness model, heterogeneous Poisson model and antecedent condition model, all individual of the species and their diameter-dividing classes were mainly aggregated, and the aggregation degree decreased with the increases of research scale, and gradually tended to random distribution. Affected by habitat heterogeneity, diffusion restriction and negative density dependence, there was a positive correlation among different intraspecific dia-meter classes, and also a certain degree of no correlation, but without negative correlation. The interspecific relationship was complex. All types of association (no, positive and negative) were observed, but negative association and no association were dominated.
Keywords:point pattern  spatial distribution  spatial correlation  habitat heterogeneity  
点击此处可从《应用生态学报》浏览原始摘要信息
点击此处可从《应用生态学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号