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Volume 29 Issue 3
Sep.  2010
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Article Navigation >  CARSOLOGICA SINICA  > 2010  >  29(3): 301-311
HAO Xiu-dong, XIE Shi-you, OUYANG Xu-hong, LUO Lun-de, SHI Sheng-qiang, LI Lin-li, SUN Ai-zhi, ZHAO Zeng-you. Features of spore-pollen assemblage in topsoil under different vegetation types in karst desert— A case in Nanping Town, Nanchuan District, Chongqing[J]. CARSOLOGICA SINICA, 2010, 29(3): 301-311. doi: 10.3969/j.issn.1001-4810.2010.03.013
Citation: HAO Xiu-dong, XIE Shi-you, OUYANG Xu-hong, LUO Lun-de, SHI Sheng-qiang, LI Lin-li, SUN Ai-zhi, ZHAO Zeng-you. Features of spore-pollen assemblage in topsoil under different vegetation types in karst desert— A case in Nanping Town, Nanchuan District, Chongqing[J]. CARSOLOGICA SINICA, 2010, 29(3): 301-311. doi: 10.3969/j.issn.1001-4810.2010.03.013
shu

Features of spore-pollen assemblage in topsoil under different vegetation types in karst desert— A case in Nanping Town, Nanchuan District, Chongqing

doi: 10.3969/j.issn.1001-4810.2010.03.013
  • 1.

    School of Geographical Sciences, Southwest University；Key Laboratory of the Three-Gorge Reservoir Region’s Eco-Environment (Ministry of Education), Southwest University

  • 2.

    School of Geographical Sciences, Southwest University

  • Received Date: 2010-05-11
  • Publish Date: 2010-09-25
    Abstract
  • Through survey and sampling to the topsoil under secondary forests, weeds and slope farmlands in Nanping, spore-pollen is identified by means of LuoPacias method to study the features of the spore-pollen assemblage. The result shows that: (1) the spore-pollen is composed of 123 species, among which, herbs and ferns dominate in quantity with the spore-pollen content of 46.40%～76.47% and averaged 65.55%; the arbors (mainly Pinus massoniana Lamb.) takes the 2nd place with the content about 17.73%～46.84% and averaged 26.40%; and the shrub spore-pollen the least, about 5.79%～12.50% in content and averaged 8.26%, that indicating a serious degradation of local vegetation; (2) there is obvious differentiation in different vegetation types. The spore-pollen assemblages of the secondary masson pine forest and the secondary camphor forest are listed as Pinus massoniana Lamb.—Pyracantha fortuneana Li.—Elatostema umbellatum Bl.—Hicriopteris glauca Thunb. and Cinnamomum camphora L.—Pyracantha fortuneana Li.—Cudrania cochinchinensis L.— Sium suave Walt. respectively; the spore-pollen assemblage of weeds is Urtica fissa Pritz.—Chenopodium acuminatum — Plantago asiatica L.—Hicriopteris glauca Thunb.; the pollen assemblage of the slope farmland is Zanthoxylum dimorphoppyllum Hemsl.—Urtica fissa Pritz.—Pteris ensiformis Burm.—Zea mays L., which corresponding to the actual vegetation and reflecting the present conditions of the modern vegetation cover in the karst desert.

     

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