重慶大巴山自然保護區(qū)薹草屬（莎草科）分類研究
發(fā)布時間：2019-06-10 01:44
【摘要】：薹草屬(Carex L.)有2000種以上,在中國約500種,是被子植物中分類最困難的類群之一。進一步理解薹草屬植物的系統(tǒng)發(fā)育及其分布特征對于維管植物分類研究意義重大。重慶大巴山自然保護區(qū)是我國重要自然保護區(qū)之一,是多種薹草屬植物的模式產(chǎn)地。迄今,該區(qū)域還沒有完整的薹草屬植物分類研究資料。通過對大巴山自然保護區(qū)薹草屬植物做全面野外考察,共采集標本400余號。經(jīng)過分類鑒定,共有薹草植物30種,3變種;其中9種是重慶新記錄,它們分別是眉縣薹草(Carex meihsienica K.T.Fu)、寬葉薹草(C.siderosticta Hance)、反折果薹草(C.retrofracta Kük.)、紅鞘薹草(C.erythrobasis H.Lév.Vaniot)、披針薹草(C.lancifolia C.B.Clarke)、穿孔薹草(C.foraminata C.B.Clarke)、卷柱頭薹草(C.bostrychostigma Maxim.)、長柱頭薹草(C.teinogyna Boott)和仲氏薹草(C.chungii Z.P.Wang),5種1變種為重慶城口縣新記錄,即相仿薹草(C.simulans C.B.Clarke)、長安薹草(C.heudesii H.Lév.Vaniot)、亨氏薹草(C.henryi(C.B.Clarke)T.Koyama)、柄果薹草(C.stipitinux Franch.)、大舌薹草(C.grandiligulata Kük.)和大理薹草(C.rubrobrunnea var.taliensis(Franch.)Kük.)。文中提供了9種重慶薹草新記錄的生境照片以及花序、基部小穗及苞片、上部小穗及其苞片、小堅果、果囊和雌花鱗片等的解剖照片以資鑒別,并討論了它們及其各自形態(tài)近緣種的區(qū)別特征和分布情況。迄今,大巴山自然保護區(qū)是反折果薹草已知分布區(qū)的北緣,是紅鞘薹草已知分布區(qū)的南緣;大巴山自然保護區(qū)是反折果薹草和穿孔薹草已知海拔分布范圍的最高記錄,是紅鞘薹草已知海拔分布范圍的最低記錄。結(jié)合相關(guān)歷史研究資料,對大巴山自然保護區(qū)薹草屬植物進行了全面的整理,共統(tǒng)計出46種,2亞種和4變種。凡本次野外考察采集到或相關(guān)資料有標本記錄的種類均引證了相關(guān)標本,暫未找到相關(guān)標本資料的種類引證了種類出處。
[Abstract]:Carex (Carex L.) There are more than 2000 species, about 500 species in China, which is one of the most difficult to classify angiosperms. Further understanding the systematic development and distribution characteristics of Carex is of great significance for the classification of vascular plants. Dabashan Nature Reserve in Chongqing is one of the important nature reserves in China and is a model producing area of Carex. Up to now, there is no complete taxonomic data of Carex in this area. Through a comprehensive field investigation of Carex in Dabashan Nature Reserve, more than 400 specimens were collected. After classification and identification, there are 30 species and 3 varieties of Carex. Nine species are new records from Chongqing. They are Carex (Carex meihsienica K.T.Fu, Carex C.siderosticta Hance), (C.retrofracta K 眉 k.), C.erythrobasis H.L 茅 v. Vaniot. Carex przewalskii (C.lancifolia C.B.Clarke), Carex punctured (C.foraminata C.B.Clarke), Carex C.bostrychostigma Maxim.), (C.teinogyna Boott) and Carex Zhong (C.chungii Z.P.Wang), Five species and one variety are new records from Chengkou County, Chongqing, namely C.simulans C.B.Clarke, C.heudesii H.L 茅 v. Vaniot, C.henryi (C.B.Clarke) T.Koyama. Carex C.stipitinux Franch.), (C.grandiligulata K 眉 k.) And Carex dali (C.rubrobrunnea var.taliensis (Franch.) K 眉 k.). In this paper, nine newly recorded habitat photographs of Carex Chongqing and anatomical photographs of inflorescences, basal spikelets and bracts, upper spikelets and their bracts, nutlets, fruit sacs and female flower scales were provided for identification. The difference characteristics and distribution of their respective morphological relatives were also discussed. Up to now, Dabashan Nature Reserve is the northern edge of the known distribution area of Carex angustifolia, and the southern edge of the known distribution area of Carex rubra. Dabashan Nature Reserve is the highest known altitude distribution range of Carex koraiensis and Carex punctatus, and the lowest known altitude distribution range of Carex red sheath. Combined with the relevant historical research data, the genus Carex in Dabashan Nature Reserve was sorted out, and 46 species, 2 subspecies and 4 varieties were counted. All the species collected from the field investigation or recorded in the relevant data all cited the relevant specimens, but the species of the relevant specimen data were not found to indicate the origin of the species.
【學位授予單位】：重慶師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：Q949
本文編號：2496069
[Abstract]:Carex (Carex L.) There are more than 2000 species, about 500 species in China, which is one of the most difficult to classify angiosperms. Further understanding the systematic development and distribution characteristics of Carex is of great significance for the classification of vascular plants. Dabashan Nature Reserve in Chongqing is one of the important nature reserves in China and is a model producing area of Carex. Up to now, there is no complete taxonomic data of Carex in this area. Through a comprehensive field investigation of Carex in Dabashan Nature Reserve, more than 400 specimens were collected. After classification and identification, there are 30 species and 3 varieties of Carex. Nine species are new records from Chongqing. They are Carex (Carex meihsienica K.T.Fu, Carex C.siderosticta Hance), (C.retrofracta K 眉 k.), C.erythrobasis H.L 茅 v. Vaniot. Carex przewalskii (C.lancifolia C.B.Clarke), Carex punctured (C.foraminata C.B.Clarke), Carex C.bostrychostigma Maxim.), (C.teinogyna Boott) and Carex Zhong (C.chungii Z.P.Wang), Five species and one variety are new records from Chengkou County, Chongqing, namely C.simulans C.B.Clarke, C.heudesii H.L 茅 v. Vaniot, C.henryi (C.B.Clarke) T.Koyama. Carex C.stipitinux Franch.), (C.grandiligulata K 眉 k.) And Carex dali (C.rubrobrunnea var.taliensis (Franch.) K 眉 k.). In this paper, nine newly recorded habitat photographs of Carex Chongqing and anatomical photographs of inflorescences, basal spikelets and bracts, upper spikelets and their bracts, nutlets, fruit sacs and female flower scales were provided for identification. The difference characteristics and distribution of their respective morphological relatives were also discussed. Up to now, Dabashan Nature Reserve is the northern edge of the known distribution area of Carex angustifolia, and the southern edge of the known distribution area of Carex rubra. Dabashan Nature Reserve is the highest known altitude distribution range of Carex koraiensis and Carex punctatus, and the lowest known altitude distribution range of Carex red sheath. Combined with the relevant historical research data, the genus Carex in Dabashan Nature Reserve was sorted out, and 46 species, 2 subspecies and 4 varieties were counted. All the species collected from the field investigation or recorded in the relevant data all cited the relevant specimens, but the species of the relevant specimen data were not found to indicate the origin of the species.
【學位授予單位】：重慶師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：Q949
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