[1]徐高兴,赵鹏*,陈思航,等. 民勤绿洲荒漠过渡带沙拐枣群落种间关联及生态位研究[J].西北林学院学报,2023,38(1):25-33.[doi:10.3969/j.issn.1001-7461.2023.01.04]
　XU Gao-xing,ZHAO Peng*,CHEN Si-hang,et al. Interspecific Association and Niche of Calligonum mongolicum Community in Minqin Oasis-Desert Transition Zone[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(1):25-33.[doi:10.3969/j.issn.1001-7461.2023.01.04]
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 民勤绿洲荒漠过渡带沙拐枣群落种间关联及生态位研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第1期
页码:
25-33
栏目:
出版日期:
2023-01-31

文章信息/Info

Title:
 Interspecific Association and Niche of Calligonum mongolicum Community in Minqin Oasis-Desert Transition Zone
文章编号:
1001-7461(2023)01-0025-09
作者:
 徐高兴1; 赵鹏1*; 陈思航1; 张晓娟2; 肖斌2
 (1.甘肃省治沙研究所，甘肃临泽荒漠生态系统国家定位观测研究站，甘肃 临泽 734200；2.荒漠化与风沙灾害防治国家重点实验室培育基地，甘肃 兰州 730070)
Author(s):
 XU Gao-xing1; ZHAO Peng1*; CHEN Si-hang1; ZHANG Xiao-juan2; XIAO Bin2
 (1.Gansu Linze National Positioning Observation and Research Station for Desert Ecosystem,Gansu Desert Control Research Institute,Linze 734200,Gansu,China; 2.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,Lanzhou 730070,Gansu,China)
关键词:
 ; 绿洲荒漠过渡带; 沙拐枣; 种间关联; 生态位; 民勤
Keywords:
 ; oasis-desert ectone;  Calligonum mongolicum;  interspecific association;  niche;  Minqin
分类号:
S793.1
DOI:
10.3969/j.issn.1001-7461.2023.01.04
文献标志码:
A
摘要:
 基于野外样方调查资料，采用方差比率法、χ2检验、联结系数Ochiai、Spearman秩相关分析和生态位量化方法对民勤绿洲荒漠过渡带沙拐枣群落种间关系进行研究，以期为荒漠区固沙植被抚育管理提供理论支撑。结果表明：1）方差比率分析发现，沙拐枣群落总体上呈现显著正联结的关系，群落处于稳定状态。2）χ2检验正关联种对数（98）高于负关联种对数（92），正负联结种对比1.07，显著关联种对占总种对数的7.37%。3）沙拐枣与沙蓬、梭梭的正联结Ochiai指数最大分别为0.90和0.79，体现出互相促进的种间关系，但大部分种对Ochiai联结系数、Spearman秩相关系数较低，种间联结关系松散。4）沙拐枣、梭梭、沙蓬、猪毛菜生态位宽度较大，对绿洲荒漠过渡带具有较强环境适应能力。5）生态位重叠指数由高到低依次为碟果虫实和骆驼蓬（0.93）>阿拉善碱蓬和红砂（0.89）>黄花补血草与画眉草（0.68）。其均值0.16，整体上群落种间竞争较小。建议干旱区防风固沙造林树种应以种间竞争较小的林草植物种为主，构建稳定人工防护体系。
Abstract:
 Based on the field survey,the interspecific relationship of Calligonum mongolicum community occuring in Minqin Oasis-Desert Ecotone (ODE) was studied by using variance ratio method,χ2-test,association coefficient Ochiai,Spearman correlation analysis and niche quantification to provide theoretical support for the tending management of sand-fixation vegetations in the desert areas.The results were as follows.1) The variance ratio analysis indicated that the interspecific associations within the C.mongolicum community were significantly positive as a whole and in a stable state.2) The χ2-test showed that the number of positive association species pairs (98) was higher than that of negatively correlated species pairs (92),and the ratio between positively and negatively correlated species was 1.07,accounting for 7.37% of the total species pairs.3) The Ochiai indices of positive association between Agriophyllum squarrosum,Haloxylon ammodendron and C.mongolicum were 0.90 and 0.79,respectively,indicating mutual promotion of interspecific relationship.However,the association coefficients of Ochiai and Spearman of most species pairs were low,the correlations between species pairs were weak.4) C.mongolicum,H.ammodendron,A.squarrosum and Salsola collina had larger niche width,indicating their strong adaptabilities to the environment in the oasis-desert transition zone.5) The niche overlap indices from high to low were Corispermum patelliforme and Peganum harmala (0.93),Suaeda przewalskii and Reaumuria soongarica (0.89),Limonium aureum and Eragrostis pilosa (0.68).The mean value was 0.16,indicating that interspecific competition was small.It was suggested that the species with low interspecific competition should be selected to construct a stable sand-fixation forest protection system during the species configuration of artificial vegetation construction.

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备注/Memo

备注/Memo:
 收稿日期：2021-10-29修回日期：2021-11-25
基金项目：甘肃省科技重大专项（21ZD4FA010）；2022年度陇原青年创新创业人才项目(2022LQGR21)。
第一作者：徐高兴，硕士，助理研究员。研究方向：荒漠化防治。E-mail:313961565@qq.com
*通信作者：赵鹏，博士，副研究员。研究方向：荒漠化防治。E-mail:zhpg1987@sina.com
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