荒漠植物红砂与西北针茅种群的空间格局及其关联性
|
摘要
植物种群的空间分布格局及关联性是研究种群扩散、群落演替及生物与环境因子相互作用的重要手段。该研究以甘肃省皋兰县老虎台干旱荒漠区的主要物种——红砂(Reaumuria songarica)和西北针茅(Stipa sareptana var.krylovii)为对象,采用Ripley K函数分析了不同坡向红砂和西北针茅种群的点格局特征及其关联性,以揭示干旱荒漠区植物演替过程中优势种群之间的竞争关系和生存繁衍策略。结果表明:(1)红砂和西北针茅在4个坡向上的分布格局具有显著差异性,随着坡向由西北坡向南坡的转变,红砂种群的株数、盖度及重要值先增加后降低,西北针茅种群则不断增加;西北坡向上,红砂种群的空间格局在0～2.1m尺度上呈聚集分布,随着尺度的增加聚集强度减弱并趋向于随机分布,而西北针茅种群在整个尺度内均呈聚集分布;西坡坡向上,在整个研究尺度内,红砂种群表现为随机分布,而西北针茅种群表现为聚集分布;西南坡向上,红砂种群在0～3.7m尺度上表现为聚集分布,3.7～5m的尺度上表现为随机分布,西北针茅种群在0～1m及4.2～5m尺度上表现为随机分布,1～4.2m尺度上表现为聚集分布;南坡坡向上,在整个研究尺度内,红砂种群表现为聚集分布,西北针茅种群表现为随机分布。(2)在西北坡与西坡坡向上,红砂和西北针茅种群的空间关联性在小尺度上均表现为负相关关系,随着研究尺度的增大,种间关联度均趋向于不相关;在西南坡与南坡坡向上,两物种在整个尺度范围内均表现为无关联性。
The spatial distribution and correlation of population is an important means to study population diffusion,community succession and the interaction between biological and environmental factors.The study takes Reaumuria songarica and Stipa sareptana var.krylovii as the main species in Laohutai arid desert area of Gaolan County,Gansu Province.The spatial distribution characteristics and their association of R.songaricaand S.sareptanavar.krylovii on different slopes were analyzed by using Ripley's k func-tion,revealing the competitive relationship,survival,and reproduction strategies among dominant populations in the process of plant succession in arid desert areas.The results showed that:(1)there were significant differences in the distribution of R.songaricaand S.sareptana var.krylovii in the four slopes.With the change of slope aspect from northwest to south,the plant number,coverage and important value of R.songaricapopulation increased first and then decreased,while the population of S.sareptana var.krylovii increased continuously.In the northwest slope,the R.songaricapopulation showed aggregation distribution on the scale of 0-2.1 m,with the increase of the scale,the aggregation intensity weakened and tended to random distribution,and the population of S.sareptanavar.krylovii was mainly aggregation distribution;In the west slope,the R.songaricapopulation showed random distribution on the whole scale,and the S.sareptana var.krylovii population showed aggregate distribution;In the southwest slope,the population of R.songaricashowed aggregation distribution on the scale of 0-3.7 mand random distribution on the scale of 3.7-5 m,the S.sareptana var.krylovii population showed a random distribution on the scale of 0-1 mand 4.2-5 m,an aggregate distribution on the scale of 1-4.2 m;In the south slope,the R.songaricapopulation showed aggregate distribution on the whole scale,and the S.sareptana var.krylovii population showed random distribution.(2)In the northwest slope and west slope,the R.songaricaand the S.sareptanavar.krylovii showed negative correlation on the small scale,with the increase of the scale,the interspecific correlation of the species tended to be unrelated;In the southwestern and southern slopes,the two species showed no correlation in the whole scale.
The spatial distribution and correlation of population is an important means to study population diffusion,community succession and the interaction between biological and environmental factors.The study takes Reaumuria songarica and Stipa sareptana var.krylovii as the main species in Laohutai arid desert area of Gaolan County,Gansu Province.The spatial distribution characteristics and their association of R.songaricaand S.sareptanavar.krylovii on different slopes were analyzed by using Ripley's k func-tion,revealing the competitive relationship,survival,and reproduction strategies among dominant populations in the process of plant succession in arid desert areas.The results showed that:(1)there were significant differences in the distribution of R.songaricaand S.sareptana var.krylovii in the four slopes.With the change of slope aspect from northwest to south,the plant number,coverage and important value of R.songaricapopulation increased first and then decreased,while the population of S.sareptana var.krylovii increased continuously.In the northwest slope,the R.songaricapopulation showed aggregation distribution on the scale of 0-2.1 m,with the increase of the scale,the aggregation intensity weakened and tended to random distribution,and the population of S.sareptanavar.krylovii was mainly aggregation distribution;In the west slope,the R.songaricapopulation showed random distribution on the whole scale,and the S.sareptana var.krylovii population showed aggregate distribution;In the southwest slope,the population of R.songaricashowed aggregation distribution on the scale of 0-3.7 mand random distribution on the scale of 3.7-5 m,the S.sareptana var.krylovii population showed a random distribution on the scale of 0-1 mand 4.2-5 m,an aggregate distribution on the scale of 1-4.2 m;In the south slope,the R.songaricapopulation showed aggregate distribution on the whole scale,and the S.sareptana var.krylovii population showed random distribution.(2)In the northwest slope and west slope,the R.songaricaand the S.sareptanavar.krylovii showed negative correlation on the small scale,with the increase of the scale,the interspecific correlation of the species tended to be unrelated;In the southwestern and southern slopes,the two species showed no correlation in the whole scale.
引文
[1]刘妍妍,金光泽.小兴安岭阔叶红松林粗木质残体空间分布的点格局分析[J].生态学报,2010,30(22):6 072-6 081.LIU Y Y,JIN G Z.Spatial point pattern analysis for coarse woody debris in a mixed broadleaved-Korean pine forest in Xiaoxing'an Mountains,China[J].Acta Ecological Sinica,2010,30(22):6 072-6 081.
[2]JOHN R,DALLING J W,HARMS K E,et al.Soil nutrients influence spatial distributions of tropical tree species[J].Proceedings of the National Academy of Sciences,USA,2007,104(3):864-869.
[3]刘旻霞.亚高寒草甸不同坡向金露梅种群的空间分布格局及空间关联[J].应用生态学报,2017,28(6):1 817-1 823.LIU M X.Spatial distribution and spatial association of Potentilla fruticosa populations on different slop aspects in subalpine meadow[J].Chinese Journal of Applied Ecology,2017,28(6):1 817-1 823.
[4]RIPLEY B D.Modeling spatial patterns[J].Journal of the Royal Statistical Society,Series B,1977,39(2):172-212.
[5]樊登星,余新晓.北京山区栓皮栎林优势种群点格局分析[J].生态学报,2016,36(2):318-325.FAN D X,YU X X.Spatial point pattern analysis of Quercus variabilis and Pinus tabulaeformis populations in a mounta area of Beijing[J].Acta Ecologica Sinica,2016,36(2):318-325.
[6]MICHAEL M,THORSTEN W,KIRK A,et al.Handbook of Spatial Point-Pattern Analysis in Ecology.Boca Raton:CRC Press[J].Biometrics,2017,73(2):715-715.
[7]胡尔查,王晓江,张文军,等.乌拉山自然保护区白桦种群的年龄结构和点格局分析[J].生态学报,2013,33(9):2 867-2 876.HU E Z,WANG X J,ZHANG W J,et al.Age structure and point pattern of Butula platyphyllain Wulashan Natural Reserve of Inner Mongolia[J].Acta Ecologica Sinica,2013,33(9):2 867-2 876.
[8]张震,刘萍,丁易,等.天山云杉林不同发育阶段种群分布格局研究[J].北京林业大学学报,2010,32(3):75-79.ZHANG Z,LIU P,DING Y,et al.Distribution patterns of Picea schrenkiana var.tianshanicapopulations at different developmental stages in the western Tianshan Mountain,northwestern China[J].Journal of Beijing Forestry University,2010,32(3):75-79.
[9]牛丽丽,余新晓,岳永杰.北京松山自然保护区天然油松林不同龄级立木的空间点格局[J].应用生态学报,2008,19(7):1 414-1 418.NIU L L,YU X X,YUE Y J.Spatial patterns of different age-class individuals in Pinus tabulaeformis forest in Songshan Nature Reserve of Beijing,China[J].Chinese Journal of Applied Ecology,2008,19(7):1 414-1 418.
[10]梁爽,许涵,林家怡,等.尖峰岭热带山地雨林优势树种白颜树空间分布格局[J].植物生态学报,2014,38(12):1 273-1 282.LIANG S,XU H,LIN J Y,et al.Spatial distribution pattern of the dominant species Gironniera subaequalis in tropical montane rainforest of Jianfengling,Hainan Island,China[J].Chinese Journal of Plant Ecology,2014,38(12):1 273-1 282.
[11]王蕾,张春雨,赵秀海.长白山阔叶红松林的空间分布格局[J].林业科学,2009,45(5):54-59.WANG L,ZHANG C Y,ZHAO X H.Spatial pattern of Korean Pine Broad leaved Forests in Changbai Mountains[J].Scientia Silvae Sinicae,2009,45(5):54-59.
[12]张育新,马克明,祁建,等.北京东灵山海拔梯度上辽东栎种群结构和空间分布[J].生态学报,2009,29(6):2 789-2 796.ZHANG Y X,MA K M,QI J,et al.Size structure and spatial pattern of Quercus liaotungensis population along elevation gradient in Dongling Mountain,Beijing[J].Acta Ecological Sinica,2009,29(6):2 789-2 796.
[13]董秋莲,李毅,单立山,等.张掖市龙首山红砂种群结构和分布格局研究[J].水土保持通报,2013,33(4):284-288.DONG Q L,LI Y,SHAN L S,et al.Population structure and distribution pattern of Reaumuria songaricain Longshou Mountain of Zhangye City[J].Bulletin of Soil and Water Conservation,2013,33(4):284-288.
[14]LIU Y B,WANG G,LIU G,et al.Anatomical,morphological and metabolic acclimation in the resurrection plant Reaumuria songarica during dehydration and rehydration[J].Journal of Arid Environments,2006,70(2):183-194.
[15]任珩,赵成章,安丽涓.基于Ripley的K(r)函数的“毒杂草”型退化草地狼毒与西北针茅种群空间分布格局[J].干旱区资源与环境,2015,29(1):59-64.REN H,ZHAO C Z,AN L J.Spatial point patterns of Stellerachamaejasme and Stipakrylovii populations in degraded grassland of Noxious and Miscellaneous types based on Ripley’s K(r)function[J].Journal of Arid Land Resources and Environment,2015,29(1):59-64.
[16]LAURA G,FANG L H.Spatial point-pattern analysis for detecting density-dependent competition in a boreal chronosequence of Alberta[J].Forest Ecology and Management,2009,259(1):98-106.
[17]刘珏宏,高慧,张丽红,等.内蒙古锡林郭勒草原大针茅-克氏针茅群落的种间关联特征分析[J].植物生态学报,2010,34(9):1 016-1 024.LIU Y H,GAO H,ZHANG L H,et al.Comparative analysis of inter-specific association within the Stipagrandis-S.krylovii community in typical steppe of Inner Mongolia,China[J].Chinese Journal of Plant Ecology,2010,34(9):1 016-1 024.
[18]郑成洋,刘增力,方精云.福建黄岗山东南坡和西北坡乔木物种多样性及群落特征的垂直变化[J].生物多样性,2004,12(1):63-74.ZHENG C Y,LIU Z L,FANG J Y.Tree species diversity along altitudinal gradient on southeastern and north-western slopes of Mt.Huanggang,Wuyi Mountains,Fujian,China[J].Biodiversity Science,2004,12(1):63-74.
[19]杨君珑,王辉,王彬,等.子午岭油松林灌木层主要树种的空间分布格局和种间关联性研究[J].西北植物学报,2007,27(4):791-796.YANG J L,WANG H,WANG B,et al.Spatial distribution pattern and interspecific association of main tree species in Pinus tabulaeformis forest in Ziwuling Mountains[J].Acta Botanica Boreali-Occidentalia Sinica,2007,27(4):791-796.
[20]马小丽,赵成章,张茜,等.退化草地甘肃臭草和冷蒿种群空间格局及关联性[J].生态学杂志,2013,32(2):299-304.MA X L,ZHAO C Z,ZHANG X,et al.Spatial pattern and spatial association of Melica przewalskyi and Artemisia frigidain degraded grassland[J].Chinese Journal of Ecology,2013,32(2):299-304.
[21]赵峰侠,尹林克.荒漠内陆河岸胡杨和多枝柽柳幼苗种群空间分布格局及种间关联性[J].生态学杂志,2007,26(7):972-977.ZHAO F X,YI L K.Spatial distribution pattern and inter specific association of Populus euphratica and Tamarix ramos is sima seedlings populations along desert in land river[J].Chinese Journal of Ecology,2007,26(7):972-977.
[22]刘旻霞,李俐蓉,车应弟,等.甘南亚高寒草甸坡向梯度上矮嵩草与珠芽蓼种群点格局及其关联性[J].生态学杂志,2017,36(10):2 685-2 691.LIU M X,LI L R,CHE Y D,et al.Spatial distribution pattern and association of Kobresia humilis and Polygonum vivipurum under different slope aspects in a subalpine meadow of Gannan[J].Chinese Journal of Ecology,2017,36(10):2 685-2 691.
[23]张璞进,清华,张雷,等.内蒙古灌丛化草原毛刺锦鸡儿种群结构和空间分布格局[J].植物生态学报,2017,41(2):165-174.ZHANG P J,QING H,ZHANG L,et al.Population structure and spatial pattern of Caragana tibetica communities in Nei Mongol shrub-encroached grassland[J].Chinese Journal of Plant Ecology,2017,41(2):165-174.
[24]李国春,宋华东,李琦,等.太白山巴山冷杉林主要树种与开花秦岭箭竹的空间点格局分析[J].应用生态学报,2017,28(11):3 487-3 493.LI G-C,SONG H-D,LI Q,et al.Spatial point pattern analysis of main trees and flowering Fargesia qinlingensis in Abies fargesii forests in Mt.Taibai of the Qinling Mountains,China[J].Chinese Journal of Applied Ecology,2017,28(11):3 487-3 493.
[25]向春玲,张金屯.东灵山亚高山草甸优势种的点格局分析[J].草业科学,2013,30(3):317-321.XIANG C L,ZHANG J T.Point pattern an analysis of subalpine meadows in Dongling Mountain[J].Pratacultural Science,2013,30(3):317-321.
[26]HARPER K A,BERGERON Y,DRAPEAU P,et al.Changes in spatial pattern of trees and snags during structural development in Picea mariana boreal forests[J].Journal of Vegetation Science,2006,17(5):625-636.
[27]楚光明,王梅,张硕新.准噶尔盆地南缘洪积扇无叶假木贼种群空间点格局[J].林业科学,2014,50(4):8-14.CHU G M,WANG M,ZHANG S X.Spatial point patters of Anabasis aphylla populations in the proluvial fan of South Junggar Basin[J].Scientia Silvae Sinicae,2014,50(4):8-14.
[28]王建良,赵成章,张伟涛,等.秦王川湿地盐角草和盐地碱蓬种群的空间格局及其关联性[J].生态学杂志,2017,36(9):2 494-2 500.WANG J L,ZHAO C Z,ZHANG W T,et al.Spatial pattern and interspecific association of Salicornia europaea and Suaeda salsain Qinwangchuan wet land[J].Chinese Journal of Ecology,2017,36(9):2 494-2 500.
[2]JOHN R,DALLING J W,HARMS K E,et al.Soil nutrients influence spatial distributions of tropical tree species[J].Proceedings of the National Academy of Sciences,USA,2007,104(3):864-869.
[3]刘旻霞.亚高寒草甸不同坡向金露梅种群的空间分布格局及空间关联[J].应用生态学报,2017,28(6):1 817-1 823.LIU M X.Spatial distribution and spatial association of Potentilla fruticosa populations on different slop aspects in subalpine meadow[J].Chinese Journal of Applied Ecology,2017,28(6):1 817-1 823.
[4]RIPLEY B D.Modeling spatial patterns[J].Journal of the Royal Statistical Society,Series B,1977,39(2):172-212.
[5]樊登星,余新晓.北京山区栓皮栎林优势种群点格局分析[J].生态学报,2016,36(2):318-325.FAN D X,YU X X.Spatial point pattern analysis of Quercus variabilis and Pinus tabulaeformis populations in a mounta area of Beijing[J].Acta Ecologica Sinica,2016,36(2):318-325.
[6]MICHAEL M,THORSTEN W,KIRK A,et al.Handbook of Spatial Point-Pattern Analysis in Ecology.Boca Raton:CRC Press[J].Biometrics,2017,73(2):715-715.
[7]胡尔查,王晓江,张文军,等.乌拉山自然保护区白桦种群的年龄结构和点格局分析[J].生态学报,2013,33(9):2 867-2 876.HU E Z,WANG X J,ZHANG W J,et al.Age structure and point pattern of Butula platyphyllain Wulashan Natural Reserve of Inner Mongolia[J].Acta Ecologica Sinica,2013,33(9):2 867-2 876.
[8]张震,刘萍,丁易,等.天山云杉林不同发育阶段种群分布格局研究[J].北京林业大学学报,2010,32(3):75-79.ZHANG Z,LIU P,DING Y,et al.Distribution patterns of Picea schrenkiana var.tianshanicapopulations at different developmental stages in the western Tianshan Mountain,northwestern China[J].Journal of Beijing Forestry University,2010,32(3):75-79.
[9]牛丽丽,余新晓,岳永杰.北京松山自然保护区天然油松林不同龄级立木的空间点格局[J].应用生态学报,2008,19(7):1 414-1 418.NIU L L,YU X X,YUE Y J.Spatial patterns of different age-class individuals in Pinus tabulaeformis forest in Songshan Nature Reserve of Beijing,China[J].Chinese Journal of Applied Ecology,2008,19(7):1 414-1 418.
[10]梁爽,许涵,林家怡,等.尖峰岭热带山地雨林优势树种白颜树空间分布格局[J].植物生态学报,2014,38(12):1 273-1 282.LIANG S,XU H,LIN J Y,et al.Spatial distribution pattern of the dominant species Gironniera subaequalis in tropical montane rainforest of Jianfengling,Hainan Island,China[J].Chinese Journal of Plant Ecology,2014,38(12):1 273-1 282.
[11]王蕾,张春雨,赵秀海.长白山阔叶红松林的空间分布格局[J].林业科学,2009,45(5):54-59.WANG L,ZHANG C Y,ZHAO X H.Spatial pattern of Korean Pine Broad leaved Forests in Changbai Mountains[J].Scientia Silvae Sinicae,2009,45(5):54-59.
[12]张育新,马克明,祁建,等.北京东灵山海拔梯度上辽东栎种群结构和空间分布[J].生态学报,2009,29(6):2 789-2 796.ZHANG Y X,MA K M,QI J,et al.Size structure and spatial pattern of Quercus liaotungensis population along elevation gradient in Dongling Mountain,Beijing[J].Acta Ecological Sinica,2009,29(6):2 789-2 796.
[13]董秋莲,李毅,单立山,等.张掖市龙首山红砂种群结构和分布格局研究[J].水土保持通报,2013,33(4):284-288.DONG Q L,LI Y,SHAN L S,et al.Population structure and distribution pattern of Reaumuria songaricain Longshou Mountain of Zhangye City[J].Bulletin of Soil and Water Conservation,2013,33(4):284-288.
[14]LIU Y B,WANG G,LIU G,et al.Anatomical,morphological and metabolic acclimation in the resurrection plant Reaumuria songarica during dehydration and rehydration[J].Journal of Arid Environments,2006,70(2):183-194.
[15]任珩,赵成章,安丽涓.基于Ripley的K(r)函数的“毒杂草”型退化草地狼毒与西北针茅种群空间分布格局[J].干旱区资源与环境,2015,29(1):59-64.REN H,ZHAO C Z,AN L J.Spatial point patterns of Stellerachamaejasme and Stipakrylovii populations in degraded grassland of Noxious and Miscellaneous types based on Ripley’s K(r)function[J].Journal of Arid Land Resources and Environment,2015,29(1):59-64.
[16]LAURA G,FANG L H.Spatial point-pattern analysis for detecting density-dependent competition in a boreal chronosequence of Alberta[J].Forest Ecology and Management,2009,259(1):98-106.
[17]刘珏宏,高慧,张丽红,等.内蒙古锡林郭勒草原大针茅-克氏针茅群落的种间关联特征分析[J].植物生态学报,2010,34(9):1 016-1 024.LIU Y H,GAO H,ZHANG L H,et al.Comparative analysis of inter-specific association within the Stipagrandis-S.krylovii community in typical steppe of Inner Mongolia,China[J].Chinese Journal of Plant Ecology,2010,34(9):1 016-1 024.
[18]郑成洋,刘增力,方精云.福建黄岗山东南坡和西北坡乔木物种多样性及群落特征的垂直变化[J].生物多样性,2004,12(1):63-74.ZHENG C Y,LIU Z L,FANG J Y.Tree species diversity along altitudinal gradient on southeastern and north-western slopes of Mt.Huanggang,Wuyi Mountains,Fujian,China[J].Biodiversity Science,2004,12(1):63-74.
[19]杨君珑,王辉,王彬,等.子午岭油松林灌木层主要树种的空间分布格局和种间关联性研究[J].西北植物学报,2007,27(4):791-796.YANG J L,WANG H,WANG B,et al.Spatial distribution pattern and interspecific association of main tree species in Pinus tabulaeformis forest in Ziwuling Mountains[J].Acta Botanica Boreali-Occidentalia Sinica,2007,27(4):791-796.
[20]马小丽,赵成章,张茜,等.退化草地甘肃臭草和冷蒿种群空间格局及关联性[J].生态学杂志,2013,32(2):299-304.MA X L,ZHAO C Z,ZHANG X,et al.Spatial pattern and spatial association of Melica przewalskyi and Artemisia frigidain degraded grassland[J].Chinese Journal of Ecology,2013,32(2):299-304.
[21]赵峰侠,尹林克.荒漠内陆河岸胡杨和多枝柽柳幼苗种群空间分布格局及种间关联性[J].生态学杂志,2007,26(7):972-977.ZHAO F X,YI L K.Spatial distribution pattern and inter specific association of Populus euphratica and Tamarix ramos is sima seedlings populations along desert in land river[J].Chinese Journal of Ecology,2007,26(7):972-977.
[22]刘旻霞,李俐蓉,车应弟,等.甘南亚高寒草甸坡向梯度上矮嵩草与珠芽蓼种群点格局及其关联性[J].生态学杂志,2017,36(10):2 685-2 691.LIU M X,LI L R,CHE Y D,et al.Spatial distribution pattern and association of Kobresia humilis and Polygonum vivipurum under different slope aspects in a subalpine meadow of Gannan[J].Chinese Journal of Ecology,2017,36(10):2 685-2 691.
[23]张璞进,清华,张雷,等.内蒙古灌丛化草原毛刺锦鸡儿种群结构和空间分布格局[J].植物生态学报,2017,41(2):165-174.ZHANG P J,QING H,ZHANG L,et al.Population structure and spatial pattern of Caragana tibetica communities in Nei Mongol shrub-encroached grassland[J].Chinese Journal of Plant Ecology,2017,41(2):165-174.
[24]李国春,宋华东,李琦,等.太白山巴山冷杉林主要树种与开花秦岭箭竹的空间点格局分析[J].应用生态学报,2017,28(11):3 487-3 493.LI G-C,SONG H-D,LI Q,et al.Spatial point pattern analysis of main trees and flowering Fargesia qinlingensis in Abies fargesii forests in Mt.Taibai of the Qinling Mountains,China[J].Chinese Journal of Applied Ecology,2017,28(11):3 487-3 493.
[25]向春玲,张金屯.东灵山亚高山草甸优势种的点格局分析[J].草业科学,2013,30(3):317-321.XIANG C L,ZHANG J T.Point pattern an analysis of subalpine meadows in Dongling Mountain[J].Pratacultural Science,2013,30(3):317-321.
[26]HARPER K A,BERGERON Y,DRAPEAU P,et al.Changes in spatial pattern of trees and snags during structural development in Picea mariana boreal forests[J].Journal of Vegetation Science,2006,17(5):625-636.
[27]楚光明,王梅,张硕新.准噶尔盆地南缘洪积扇无叶假木贼种群空间点格局[J].林业科学,2014,50(4):8-14.CHU G M,WANG M,ZHANG S X.Spatial point patters of Anabasis aphylla populations in the proluvial fan of South Junggar Basin[J].Scientia Silvae Sinicae,2014,50(4):8-14.
[28]王建良,赵成章,张伟涛,等.秦王川湿地盐角草和盐地碱蓬种群的空间格局及其关联性[J].生态学杂志,2017,36(9):2 494-2 500.WANG J L,ZHAO C Z,ZHANG W T,et al.Spatial pattern and interspecific association of Salicornia europaea and Suaeda salsain Qinwangchuan wet land[J].Chinese Journal of Ecology,2017,36(9):2 494-2 500.