研究论文

庐山国家级自然保护区同域分布的鼬獾和花面狸时空分布格局

  • 孙捷 ,
  • 章蜜 ,
  • 罗伟 ,
  • 顾杭敏 ,
  • 张微微
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  • 1 江西省保护生物学重点实验室, 江西农业大学野生动植物与自然保护地研究中心, 南昌 330045;
    2 江西庐山国家级自然保护区管理局, 九江 332015
孙捷(1997-),男,硕士研究生,主要从事野生动物保护研究;章蜜(1987-),女,工程师,主要从事野生动植物保护研究.

收稿日期: 2024-01-05

  修回日期: 2024-07-03

  网络出版日期: 2025-01-23

基金资助

国家自然科学基金(32360251)

Temporal and spatial distribution patterns of Chinese ferret-badger (Melogale moschata) and masked palm civet (Paguma larvata) in the same region of Lushan National Nature Reserve

  • SUN Jie ,
  • ZHANG Mi ,
  • LUO Wei ,
  • GU Hangmin ,
  • ZHANG Weiwei
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  • 1 Research Center for Wildlife and Nature Reserves, Jiangxi Agricultural University, Nanchang 330045, China;
    2 Jiangxi Lushan National Nature Reserve Management Bureau, Jiujiang 332015, China

Received date: 2024-01-05

  Revised date: 2024-07-03

  Online published: 2025-01-23

摘要

同域分布的物种通过生态位分化减少竞争,实现共存。为探究同域分布鼬獾(Melogale moschata)和花面狸(Paguma larvata)的时空分布格局,了解两者与环境因子的相互关系以及共存机制。采用日活动强度指数、核密度估计法和重叠指数法对庐山国家级自然保护区鼬獾和花面狸的活动节律及其时间生态位重叠程度进行分析,以MaxEnt模型对二者的适宜栖息地进行预测,并根据预测结果运用ENMTools 1.4.4计算二者的生态位重叠度,比较二者在空间生态位上的选择差异,同时探讨环境因子对二者共存机制的影响。结果表明:鼬獾和花面狸均属于典型的夜行性动物,二者日活动节律重叠指数较高(Δ=0.93,P > 0.05),且未通过时间生态位的分化来减少竞争;鼬獾和花面狸共同适宜栖息地主要分布在庐山保护区的山脚林缘,空间分布格局大量重叠,也存在一定差异;二者对环境因子的选择具有相似性,均受海拔影响最大,但在植被类型和坡度选择上存在一定差异,二者通过空间生态位的部分差异来避免对食物资源和领域的竞争。本研究揭示了鼬獾与花面狸在庐山保护区的时空分布格局,结果表明二者时空生态位分化不明显,建议充分考虑二者对环境因子的耐受能力,积极探讨加强栖息地保护,合理控制人为干扰,以实现对两个物种甚至更多同域近缘物种的有效保护。

本文引用格式

孙捷 , 章蜜 , 罗伟 , 顾杭敏 , 张微微 . 庐山国家级自然保护区同域分布的鼬獾和花面狸时空分布格局[J]. 兽类学报, 2025 , 45(1) : 60 -69 . DOI: 10.16829/j.slxb.150895

Abstract

Species with sympatric distributions typically undergo ecological niche differentiation to minimize competition and facilitate coexistence. This research explores the spatio-temporal distribution patterns of the Chinese ferret-bad-ger (Melogale moschata) and masked palm civet (Paguma larvata), their interactions with environmental factors, and the mechanisms behind their coexistence. We analyzed the daily activity rhythms and the degree of temporal niche overlap between these species within the Lushan National Nature Reserve using daily activity intensity index, kernel density estimation, and overlap index methods. The MaxEnt model was used to predict suitable habitats for both species and ecological niche overlap was assessed using ENMTools 1. 4. 4. We also compare their spatial niche preferences and investigate how environmental factors influence their coexistence strategies. The results reveal that both the Chinese ferret-badger and masked palm civet are predominantly nocturnal. They exhibit a high degree of overlap in their daily activity rhythms (Δ = 0.93, P > 0. 05), indicating that temporal niche differentiation does not significantly reduce competition between them. Suitable habitats for both species are primarily located along the forest edges at the mountain bases within the reserve, where there is substantial spatial overlap, although some differences exist. Both species show similar preferences for environmental factors, with altitude being the most significant, yet they differ in their preferences for vegetation types and slopes. These spatial differences in ecological niches may help mitigate competition for food resources and territories. This study underscores that the spatio-temporal distribution patterns of the Chinese ferret-badger and masked palm civet in the Lushan National Nature Reserve exhibit minimal niche differentiation. It is recommended to fully consider the environmental tolerance of both species, actively enhance habitat protection, and control human distur-bances to effectively conserve these and other sympatric species.

参考文献

Araujo M B, Pearson R G, Thuiller W, Erhard M. 2005. Validation of species-climate impact models under climate change. Global Change Biology, 11 (9):1504-1513.
Azlan J M, Sharma D S K. 2006. The diversity and activity patterns of wild felids in a secondary forest in Peninsular Malaysia. Oryx, 40 (1):36-41.
Burton A C, Neilson E, Moreira D, Ladle A, Steenweg R, Fisher J T, Bayne E, Boutin S, Stephens P. 2015. Wildlife camera trapping:a review and recommendations for linking surveys to ecological processes. Journal of Applied Ecology, 52 (3):675-685.
Carvalho J C, Cardoso P. 2020. Decomposing the causes for niche dif-ferentiation between species using hypervolumes. Frontiers in Ecology and Evolution, 8:243.
Chang Y, Zhang M M, Liu Z S, Hu T H, Li Z G. 2010.Summer feed-ing habits of rock sheep and red deer in Helan Mountain. Chinese Journal of Ecology, 30 (6):1486-1493. (in Chinese)
Chen L J, Shu Z F, Xiao Z S. 2019. Application of camera-trapping data to study daily activity patterns of Galliformes in Guangdong Chebaling National Nature Reserve. Biodiversity Science, 27 (3):266-272. (in Chinese)
Cheng B B, He J J, Zou Q, Luo W, Li M L, Liu J, Liao M W, Wu Y F, Kong F Q, Zhang W W. 2022. Analysis of bird diversity and composition in Lushan National Nature Reserve. Chinese Journal of WildLife, 43 (4):1027-1036. (in Chinese)
Fan Z L. 1994. The features of flora and the distribution of vegetation at Lushan Mountain. Journal of Huanggang Teachers College(Natural Science Edition), 14 (1):52-55. (in Chinese)
He M X, Chen L X, Luo X, Gu X D, Wang G, Ran J H. 2018. Suit-able habitat prediction and overlap analysis of two sympatric spe-cies, giant panda (Ailuropoda melanoleuca) and Asiatic black bear(Ursus thibetanus) in Liangshan Mountains. Biodiversity Science, 26 (11):1180-1189. (in Chinese)
Hu J, Xie P G, Mei Y Y, Guo R, Song Y, Li T T, Xu A C. 2023. Poten-tial suitable habitats prediction and overlap analysis of black muntjac (Muntiacus crinifrons) and small muntjac (M. reevesi)in Qingliangfeng National Nature Reserve, Zhejiang Province.Acta Ecologica Sinica, 43 (6):2210-2219. (in Chinese)
Hutchinson G E. 1959. Homage to Santa Rosalia or why are there so many kinds of animals? The American Naturalist, 93 (870):145-159.
Lawler I R, Stapley J, Foley W J, Eschler B M. 1999. Ecological ex-ample of conditioned flavor aversion in plant-herbivore interac-tions:effect of terpenes of eucalyptus leaves on feeding by com-mon ringtail and brushtail possums. Journal of Chemical Ecol-ogy, 25 (2):401-415.
Li A M, Li Y K, Shao R Q, Qian L, Shen J, Zhang C, Ta Q. 2022.
Analysis of activity patterns of the Chinese ferret badger using in-frared camera technology. Chinese Journal of Zoology, 57 (2):225-235. (in Chinese)
Li B G, Hou R, Zhang H, Chen G L, Fang G. 2021. Research ad-vances and prespectives in ethology and behavioral ecology of the mammals in China. Acta Theriologica Sinica, 41 (5):525-536.(in Chinese)
Li H Q, Xing L G, Han P S, Niu C H, Yuan X Q, Huo A P. 2021. Suit-able habitat prediction and overlap analysis between Crossoptilon mantchuricum and Phasianus colchicus in Huanglong Mountains, Shaanxi Province. Journal of Northeast Forestry University, 49(12):84-89. (in Chinese)
Li X Y, Li J Q, Wan Y Q, Li Y K, Shan J H, Wang Z Y, Shao R Q, Zhang C, Ma C Y. 2023. Study on activity rhythm and domain occupation of civet cats in subtropical forest ecosystems based on infrared camera technology. Journal of Jiangxi Normal Univer-sity (Natural Science), 47 (5):539-550. (in Chinese)
Li X. 2023. The coexistence mechanism of main rodent in desert bas-ing on the multidimensional niche. Ph. D thesis. Hohhot:Agri-cultural University of Inner MongoLia. (in Chinese)
Li Z L, Duo L A, Li S, Wang T M. 2021. Competition and coexis-tence among terrestrial mammalian carnivores. Biodiversity Sci-ence, 29 (1):81-97. (in Chinese)
Li Z Y, Yang D D, Wang L, Zong D S. 2007. Biodiversity and ap-praisal on mammal resources of Lushan Nature Reserve in Jiangxi Province. Acta Agriculturae Jiangxi, 19 (6):105-108. (in Chinese)
Lin W M, Weng Y, A J, Wang M, Wang Q, Wang F. 2023. Preliminary research on daily activity rhythm, habitat use and responseto hu-man activity of large Indian civet (Viverra zibetha) in Bayuelin Nature Reserve, Sichuan Province. Acta Theriologica Sinica, 43(4):364-377. (in Chinese)
Liu B Y, Zhang T Y, Liang S, Bai X J, Liu W. 2020. Comparison of birds'and mammals'diversities using camera-trapping survey in Guizhou Chishui Alsophila National Nature Reserve and its sur-rounding areas. Acta Theriologica Sinica, 40 (5):503-519. (in Chinese)
Liu C, White M, Newell G, Pearson R. 2013. Selecting thresholds for the prediction of species occurrence with presence-only data.
Journal of Biogeography, 40 (4):778-789.
Liu S Y, Wu Y, Li S. 2022. Illustrated Book of Chinese Mammals. 3rd ed. Fuzhou:Straits Book Publishing House. (in Chinese)
Liu X B, Zhao K H, Wang M. 2022. Using infrared camera traps to monitor the activity rhythm and spatial distribution pattern of Leopard cat (Prionailurus bengalensis) and Yellow throated mar-ten (Martes flavigula) in Foping National Nature Reserve. Chinese Journal of Zoology, 57 (1):9-18. (in Chinese)
Liu X Z, Wang L. 2010.Scientific Investigation and Biodiversity Re-search in Lushan Nature Reserve, Jiangxi Province. Beijing:Sci-ence Press. (in Chinese)
Loggins A A, Shrader A M, Monadjem A, Mccleery R A. 2019. Shrub cover homogenizes small mammals'activity and perceived preda-tion risk. Scientific Reports, 9 (1):16857.
Marinho P H, Fonseca C R, Sarmento P, Fonseca C, Venticinque E M. 2020. Temporal niche overlap among mesocarnivores in a Caat-inga dry forest. European Journal of Wildlife Research, 66 (2):1-13.
Marneweck C, Marneweck D J, van Schalkwyk O L, Beverley G, Davies-Mostertz H T, Parker D M. 2019. Spatial partitioning by a subordinate carnivore is mediated by conspecific overlap. Oeco-logia, 191 (3):531-540.
Matsuo R, Ochiai K. 2009. Dietary overlap among two introduced and one native sympatric carnivore species, the raccoon, the Pagumalarvata, and the raccoon dog, in Chiba Prefecture, Japan.
Mammal Study, 34 (4):187-194.
Meng B S, Wang C, Wang Y Q, Fan H, Xie B, Ran W, Zhang M M. 2022. Daily activity rhythms of five species of sympatric pheas-ants in Fanjingshan National Nature Reserve. Forest Science, 58(11):137-148. (in Chinese)
Miao R Z, Liu G, Bi J J, Zhang H J, Chen X S, Zhu H Q. 2023. Niche differentiation among of three species of Mustelidae in Qingsong Forest Area of Shulan City, Jilin Province. Chinese Journal of Zo-ology, 58 (1):30-42. (in Chinese)
Mori E, Bagnato S, Serroni P, Sangiuliano A, Rotondaro F, Marchianò V, Cascini V, Poerio L, Ferretti F. 2020. Spatiotemporal mecha-nisms of coexistence in an European mammal community in a protected area of southern Italy. Journal of Zoology, 310 (3):232-245.
O'Brien T G, Kinnaird M F, Wibisono H T. 2003. Crouching tigers, hidden prey:Sumatran and prey populations in a tropical forest landscape. Animal Conservation, 6 (2):131-139.
Parolo G, Ferrarini R A. 2008. Toward improved species niche model-ling:Arnica montana in the Alps as a case study. Journal of Ap-plied Ecology, 45 (5):1410-1418.
Petroelje T R, Kautz T M, Beyer D E, Belant J L. 2021. Interference competition between wolves and coyotes during variable prey abundance. Ecology and Evolution, 11 (3):1413-1431.
Phillips S J, Anderson R P, Schapire R E. 2006. Maximum entropy modeling of species geographic distributions. Ecological Model-ling, 190 (3):231-259.
Ridout M S, Linkie M. 2009. Estimating overlap of daily activity pat-terns from camera trap data. Journal of Agricultural Biological and Environmental Statistics, 14 (3):322-337.
Rowcliffe M. 2016. Activity:animal activity statisties.[2020-12-07]. https://CRAN.R-project.org/package=activity.
Ruan X D, Chen Y X, Wang B Y, Yang X, Liao C L, Yu Y, Guo C. 2023. Diversity and activity rhythm of mammals and birds in the Badagongshan National Nature Reserve, Hunan inferred through camera traps. Acta Theriologica Sinica, 43 (3):342-351. (in Chinese)
Schreier B M, Harcourt A H, Coppeto S A, Somi M F. 2010.Interspe-cific competition and niche separation in primates:a global analy-sis. Biotropica, 41 (3):283-291.
Smith A T, Xie Y. 2009. Field Handbook of Chinese Mammals.Changsha:Hunan Education Press. (in Chinese).
Steinmetz R, Seuaturien N, Chutipong W. 2013. Tigers, leopards, and dholes in a half-empty forest:assessing species interactions in a guild of threatened carnivores. Biological Conservation, 163:68-78.
Tang C B, Liu Z S, Huang Z H, Yao W, Lin J Z, Wang G H, Zhou Q H. 2022. Diurnal activity rhythm and seasonal variation of north-ern tree shrews (Tupaia belangeri) in Nonggang, Guangxi. Chinese Journal of Wildlife, 43 (1):45-50. (in Chinese)
Wang D, Lang J M, Pan H F, Jiang G S. 2019. Spatial coexistence of mammals in cold and warm seasons at Hunchun Nature Reserve, Jilin Province. Chinese Journal of Wildlife, 40 (3):529-536. (in Chinese)
Wang J. 2006. The study on habitat selection and feeding ecology of masked palm cievets in Hubei Houhe Nature Reserve, Hubei Province. Master's thesis. Harbin:Northeast Forestry Univer-sity. (in Chinese)
Wang Y Q, Yao Z C, Meng B S, Ran J C, Huang X L, Zhang M M. 2023. Daily activity rhythms of Paguma larvata in Fanjingshan National Nature Reserve. Journal of Mountain Agricultural Biol-ogy, 42 (5):24-28. (in Chinese)
Warren D L, Glor R E, Turelli M. 2010.ENMTools:a toolbox for comparative studies of environmental niche models. Ecography, 33 (3):607-611.
Yao W, Wang G H, Lin J Z, Long J F, Li J Q, Zhou Q H. 2021. Com-parison of activity rhythms of sympatric Chinese ferret-badger(Melogale moschata) and crab-eating mongoose (Herpestes urva). Acta Theriologica Sinica, 41 (2):128-135. (in Chinese)
York P, Evangelista P, Kumar S, Graham J, Flather C, Stohlgren T. 2011. A habitat overlap analysis derived from Maxent for tama-risk and the south-western willow fly catche. Frontiers of Earth Science, 5:120-129.
Zhang L J, Wang A M, Yuan L, Bao W D, Yang Y X, Bartle. 2011.Preliminary comparison of diet composition of four small sized carnivores at Saihanwula Nature Reserve, Inner MongoLia. Acta Theriologica Sinica, 31 (1):55-61. (in Chinese)
Zhao C G, Chen F, Yan Z K, Liu X Y, Liu L M, Li W W, Duan Y B. 2021. Activity rhythm and interspecific association of sympatric Lady Amherst's pheasant and Temminck's tragopan in the Yaoshan Mountains. Chinese Journal of Ecology, 40 (12):4008-4014. (in Chinese)
Zhou Q H, Wei H, Tang H X, Huang Z H, Krzton A, Huang C M. 2014. Niche separation of sympatric macaques, Macaca assamen-sis and M. mulatta, in limestone habitats of Nonggang, China.Primates, 55 (1):125-137.
Zhou Q, Zhang M, Luo W, Wu S B, Shen L, Peng S L, Li L H, Zhang J T, Kui Q Y, Liu Y B. 2023. Infrared camera monitoring of birds and mammals in Lushan National Nature Reserve of Jiangxi Prov-ince. Journal of China West Normal University (Natural Sci-ences), 45 (3):231-238. (in Chinese)
Zou B Y, Luo X, Zhu B W, Ran J H, Fang C. 2021. The spatial distri-bution relationship between three pheasant species and mutual predator, the red fox (Vulpes vulpes), on the western Sichuan Pla-teau. Biodiversity Science, 29 (7):918-926. (in Chinese)
Zou Q X, Peng C C, Yang X W, Li G R, Mu L, Su H J. 2021. Spatio-temporal pattern of co-existence of two sympatric cervid species in Mayanghe National Nature Reserve, Guizhou, China. Chinese Journal of Wildlife, 42 (1):5-13. (in Chinese)Smith A T, 解焱. 2009. 中国兽类野外手册. 长沙:湖南教育出版社.
王亚强, 姚志诚, 蒙秉顺, 冉景丞, 黄小龙, 张明明. 2023. 梵净山花面狸日活动节律研究. 山地农业生物学报, 42 (5):24-28.
王铎, 郎建民, 潘海峰, 姜广顺. 2019. 吉林珲春保护区哺乳动物种间 冷 暖 季 空 间 共 存 关 系 的 研 究. 野 生 动 物 学 报, 40 (3):529-536.
王健. 2006. 湖北后河自然保护区果子狸栖息地选择与觅食生态学研究. 哈尔滨:东北林业大学硕士学位论文.
刘小斌, 赵凯辉, 王勐. 2022. 利用红外相机监测数据分析佛坪国家级自然保护区豹猫和黄喉貂活动节律及空间分布. 动物学杂志, 57 (1):9-18.
刘少英, 吴毅, 李晟. 2022. 中国兽类图鉴. 第 3 版. 福州:海峡书局出版社.
刘邦友, 张廷跃, 梁盛, 白小节, 刘伟. 2020. 贵州赤水桫椤国家级自然保护区及其周边区域鸟兽多样性红外相机监测对比. 兽类学报, 40 (5):503-519.
刘信中, 王琅. 2010.江西庐山保护区科学考察与生物多样性研究. 北京:科学出版社.
阮向东, 陈奕欣, 王博宇, 杨筱, 廖春林, 禹洋, 郭程. 2023. 湖南八大公山国家级自然保护区兽类和鸟类多样性及活动节律调查.兽类学报, 43 (3):342-351.
李竹云, 杨道德, 王琅, 宗道生. 2007. 江西庐山自然保护区兽类资源多样性及评价. 江西农业学报, 19 (6):105-108.
李安梅, 李言阔, 邵瑞清, 钱磊, 申锦, 张超, 塔旗. 2022. 基于红外相机技术分析鼬獾的活动节律. 动物学杂志, 57 (2):225-235.
李宏群, 邢立刚, 韩培士, 牛常会, 袁晓青, 霍安平. 2021. 陕西黄龙山褐马鸡和环颈雉适宜生境预测及重叠区域. 东北林业大学学报, 49 (12):84-89.
李治霖, 多立安, 李晟, 王天明. 2021. 陆生食肉动物竞争与共存研究概述. 生物多样性, 29 (1):81-97.
李保国, 侯荣, 张河, 陈国梁, 方谷. 2021. 中国兽类行为学和行为生态学研究进展与展望. 兽类学报, 41 (5):525-536.
李笑颖, 李佳琦, 万雅琼, 李言阔, 单继红, 王振宇, 邵瑞清, 张超, 马钲焱. 2023. 基于红外相机技术的亚热带森林生态系统花面狸活动节律及占域研究. 江西师范大学学报 (自然科学版), 47(5):539-550.
李鑫. 2023. 多维生态位揭示荒漠区啮齿动物群落主要鼠种的共存机制. 呼和浩特:内蒙古农业大学博士学位论文.
邹芹, 章蜜, 罗伟, 吴诗宝, 沈玲, 彭松立, 李乐寰, 张健霆, 隗群英, 刘雨冰. 2023. 江西庐山国家级自然保护区鸟兽红外相机监测.西华师范大学学报 (自然科学版), 45 (3):231-238.
邹启先, 彭彩淳, 杨雄威, 李光容, 穆浪, 粟海军. 2021. 两种同域分布鹿科动物的共存时空格局. 野生动物学报, 42 (1):5-13.
邹博研, 罗概, 朱博伟, 冉江洪, 房超. 2021. 川西高原三种雉类与其捕食者赤狐的空间关系. 生物多样性, 29 (7):918-926.
张亮. 2008. 湖北后河自然保护区獾类物种野外空间行为生态学初步研究. 杭州:浙江大学博士学位论文.
张逦嘉, 王安梦, 袁梨, 鲍伟东, 杨永昕, 巴特尔. 2011. 内蒙古赛罕乌拉自然保护区 4 种小型食肉目动物的食性构成的初步分析.兽类学报, 31 (1):55-61.
陈立军, 束祖飞, 肖治术. 2019. 应用红外相机数据研究动物活动节律:以广东车八岭保护区鸡形目鸟类为例. 生物多样性, 27 (3):266-272.
苗润泽, 刘庚, 毕靖吉, 张宏静, 陈旭升, 朱洪强. 2023. 吉林省舒兰市青松林区三种鼬科动物生态位的差异. 动物学杂志, 58 (1):30-42.
林炜明, 翁悦, 阿家, 王敏, 王琦, 王放. 2023. 四川八月林自然保护区大灵猫日活动节律、栖息地利用及其对人类活动响应的初步研究. 兽类学报, 43 (4):364-377.
和梅香, 陈俪心, 罗概, 古晓东, 王戈, 冉江洪. 2018. 凉山山系大熊猫和黑熊适宜生境预测及重叠分析. 生物多样性, 26 (11):1180-1189.
赵晨光, 陈飞, 颜再奎, 刘兴元, 刘鲁明, 李维薇, 段玉宝. 2021. 同域分布的白腹锦鸡和红腹角雉的活动节律及种间联结关系. 生态学杂志, 40 (12):4008-4014.
胡娟, 谢培根, 梅祎芸, 郭瑞, 宋虓, 李婷婷, 徐爱春. 2023. 浙江清凉峰国家级自然保护区黑麂和小麂潜在适宜栖息地预测及重叠性分析. 生态学报, 43 (6):2210-2219.
昶野, 张明明, 刘振生, 胡天华, 李志刚. 2010.贺兰山同域分布岩羊和马鹿的夏季食性. 生态学报, 30 (6):1486-1493.
姚维, 汪国海, 林建忠, 龙继凤, 李佳琦, 周岐海. 2021. 同域分布鼬獾和食蟹獴活动节律的比较. 兽类学报, 41 (2):128-135.
唐创斌, 刘志尚, 黄振华, 姚维, 林建忠, 汪国海, 周岐海. 2022. 广西弄岗北树鼩的日活动节律及其季节性变化. 野生动物学报, 43(1):45-50.
程彬彬, 何巨涛, 邹芹, 罗伟, 黎敏灵, 刘洁, 廖梦薇, 吴玉芬, 孔凡前, 张微微. 2022. 庐山国家级自然保护区鸟类多样性及其组成特征分析. 野生动物学报, 43 (4):1027-1036.
蒙秉顺, 王丞, 王亚强, 樊涵, 谢波, 冉伟, 张明明. 2022. 梵净山保护区 同 域 分 布 5 种 雉 类 的 日 活 动 节 律. 林 业 科 学, 58 (11):137-148.
樊忠良. 1994. 庐山植物区系的特征和植被的分布. 黄冈师专学报(自然科学版), 14 (1):52-55.
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