[1]周禧琳,吕瑞恒*,韩路,等. 和田河不同生境灰胡杨种群结构特征及竞争关系分析[J].西北林学院学报,2018,33(1):43-48.[doi:10.3969/j.issn.1001-7461.2018.01.07]
　ZHOU Xi-lin,LYU Rui-heng*,HAN Lu,et al. Population Structure and Intraspecific Competition of Populus pruinosa in Different Habits along the Up Reaches of Hotan River[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(1):43-48.[doi:10.3969/j.issn.1001-7461.2018.01.07]
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 和田河不同生境灰胡杨种群结构特征及竞争关系分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第1期
页码:
43-48
栏目:
出版日期:
2018-01-31

文章信息/Info

Title:
 Population Structure and Intraspecific Competition of Populus pruinosa in Different Habits along the Up Reaches of Hotan River
文章编号:
1001-7461(2018)01-0043-06
作者:
 周禧琳1; 2; 吕瑞恒1; 2*; 韩路1; 2; 袁林1
 （1.新疆塔里木大学 植物科学学院，新疆 阿拉尔 843300；2.新疆生产建设兵团 塔里木盆地生物资源保护利用重点实验室，新疆 阿拉尔 843300）
Author(s):
 ZHOU Xi-lin1; 2; LYU Rui-heng1; 2*; HAN Lu1; 2; YUAN Lin1
 (1.College of Plant Science and Technology,Tarim University,Alar,Xinjiang 843300,China; 2.Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin,Xinjiang Production & Construction Corps,Alar,Xinjiang 843300,China)
关键词:
 ; 生境; 灰胡杨; 种群结构; 种内竞争
Keywords:
 ; habitats;  Populus pruinosa;  population structure;  intraspecific competition
分类号:
S792.11
DOI:
10.3969/j.issn.1001-7461.2018.01.07
文献标志码:
A
摘要:
 分析比较不同生境条件下灰胡杨种群结构、空间分布格局及种内竞争关系，为和田河上游灰胡杨种群的保护和恢复提供理论参考。在和田河上游依据生境不同，设置灰胡杨群落样方，大小分别为0.5 hm2（生境Ⅰ）、1.5 hm2（生境Ⅱ），采用相邻格子法调查分析灰胡杨种群。结果表明：1)生境Ⅰ8、12 cm径阶范围灰胡杨种群数量分布较多，分别占总株数的33.25%、46.55%，幼苗、幼树缺乏。生境Ⅱ种群数量在4 cm径阶分布最多，而在＜2 cm径阶范围分布最少，种群数量分布不合理，处于衰退种群。2)生境Ⅰ灰胡杨种群在0~1.8 m尺度呈集群分布，而在>1.8 m尺度条件下表现为随机分布。生境Ⅱ在0~42 m范围内呈集群分布，42~48 m范围内为随机分布，随着尺度逐渐增大，表现出向均匀分布转化的趋势。3)生境Ⅰ灰胡杨种群随着对象木胸径增大，平均竞争指数呈逐渐减小的趋势，而生境Ⅱ则表现出先增大后减小的趋势。4)生境Ⅰ灰胡杨种群对象木胸径与竞争强度之间服从幂函数关系，生境Ⅱ服从指数函数关系。通过函数模拟预测，生境Ⅰ灰胡杨胸径达到10 cm后，种内竞争强度趋于稳定，而生境Ⅱ各径阶之间竞争强度变幅不大。受生境的影响，灰胡杨种群结构特征及竞争关系有较大差异，生境Ⅰ灰胡杨胸径≤10 cm时，需进行人工抚育管理，生境Ⅱ灰胡杨种群则需尽快采取生态输水等人工措施促进灰胡杨更新复壮，保证种群结构的稳定性。
Abstract:
 Inorder to provide a theoretical reference for population protection and restoration of Populus pruinosa,population structure,distribution pattern and intraspecific competitive relationships of P.pruinosa were analyzed and compared among different habitats.Using the methods of wild community investigation,the P.pruinosa community plots were established according to the habits difference in the up reaches of Hotan River,the plot areas were 0.5 hm2 (habitⅠ) and 1.5 hm2 (habitⅡ),respectively.The results were as follows.1) The number of P.pruinosa population was the highest among those with diameter ranged 8,and 12 cm habitⅠ,which accounted for 33.25% and 46.55%,respectively.Seedlings and saplings in habits Ⅰ were rarely observed.In habitat II,in the highest number was found in those with diameter 4 cm,the least population number was in less than 2 cm diameter grade range.The number of P.pruinosa population distributed unreasonably,the population was in declining stage in HabitsⅡ.2) P.pruinosa population showed cluster distribution pattern in 1-1.8 m scales,the scales above 1.8 m was random distribution in habitsⅠ.The population showed cluster distribution pattern within 0-42 m random distribution patter within 42-48 m range,with the scale increasing,it showed the trend to the uniform distribution in HabitsⅡ.3) With the DBH increase of objective tree,the population competition index decreased gradually in HabitsⅠ,and showed first increasing and then decreasing trend in HabitsⅡ.4) The relation between competition intensity and breast height diameter of objective tree nearly conformed to power function in habitsⅠ,but exponential function in habits II.The forecast by function simulation showed that intraspecific competition intensity was tending towards stability in habitsⅠwhen the DBH reached 10 cm,and the wave range of competition intensity during various diameter grade was not too obvious in habitsⅡ.Structure characteristics and competitive relationship of P.pruinosa population had some differences affected by habitats.When the DBH of P.pruinosa was less than 10 cm,artificial tending management needed to be implemented in habits I.Some artificial measures such as ecological water transport was carried out as soon as possible for promoting regeneration and ensuring stability of P.pruinosa population in habitsⅡ.

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备注/Memo

备注/Memo:
 收稿日期：2017-04-04修回日期：2017-06-10
基金项目：国家自然科学基金（31360109）；新疆生产建设兵团科技局博士点基金(2011BB021)；新疆生产建设兵团科技局重点实验室与区域创新平台建设计划（2016BB007）。
作者简介：周禧琳，男，讲师，硕士，研究方向：荒漠植物及保护利用。E-mail：zxlzkytd@163.com
*通信作者：吕瑞恒，男，副教授，研究方向：荒漠植被恢复和保护。E-mail：lvrh514723@126.com
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