山旺中新世植被演替及古气候定量研究

doi:10.7605/gdlxb.2001.03.001

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Abstract

130 closely spaced (10-30cm) pollen samples which were collected from 22.95m Shanwang profile have been studied and are detailed in this paper. 111 pollen and spore taxa, as well as their nearest living relatives have been recognized. The reconstruction of palaeovegetation indicates that the Shanwang Miocene flora was a mixed mesophytic forest. Throughout the studied section, this mixed mesophytic forest experienced "mixed mesophytic forest from wet habitats", "mixed mesophytic forest from dry habitats", "mixed mesophytic forest from wet habitats", "mixed mesophytic forest from upland, riparian and alkaline soils habitats", "mixed misophytic forest from calcareous habitats" five stages. Quantitative palaeoclimatic data has been obtained through using the coexistence approach. The results indicate that the mean annual temperature (MAT) was between 15.6-17.2℃, that the mean temperature of the coldest month (TCM) was between 5.0-6.6℃ and the mean temperature of the warmest month (TWM) was between 24.7-27.8℃. Mean annual precipitation (MAP) has been determined in the range of 1162-1308 mm, with precipitation of the warmest month (PwarmM) being 108-111mm, precipitation in the driest month (PDM) being 16-59 mm and precipitation of 148-180 mm occurring in the wettest month (PwetM). Relative humidity (RH) has been calculated as 72-75 %. This also indicates that there were climatic fluctuations between the high resolution pollen samples. It was up to 3℃ for mean annual temperature, up to 4℃ for temperature of the coldest month, up to 1℃ for temperature of the warmest month, up to 100 mm for mean annual precipitation.

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Published: 01 June 2001

About author: Liang Mingmei, born in 1970, is a Ph.D student from the Institute of Botany, Chinese Academy of Sciences.

Cite this article:

. Palaeovegetation succession and quantitative palaeoclimate reconstruction of the Miocene Shanwang assemblage[J]. JOURNAL OF PALAEOGEOGRAPHY, 2001, 3(3): 11-20.

. Palaeovegetation succession and quantitative palaeoclimate reconstruction of the Miocene Shanwang assemblage[J]. JOPC, 2001, 3(3): 11-20.

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http://journal09.magtechjournal.com/gdlxb/EN/10.7605/gdlxb.2001.03.001 OR http://journal09.magtechjournal.com/gdlxb/EN/Y2001/V3/I3/11

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