海南岛热带针-阔叶林交错区群落环境特征

doi:10.11707/j.1001-7488.20140801

Abstract

Abstract:

Based on 13 typical tropical coniferous-broadleaved forest ecotones, we analyzed the environmental characteristics along/of ecotones using belt transect method. The results showed that, as the stand changed from coniferous forest zone to broadleaved forest zone across coniferous-broadleaved forest ecotone, soil pH, soil organic content, total N, available N, available P, and available K contents showed an order of broadleaved forest zone > coniferous-broadleaved forest ecotone >coniferous forest zone. The total K, litter depth and light factors showed an order of coniferous forest zone > coniferous-broadleaved forest ecotone >broadleaved forest zone, total P. The soil water content and soil gravel content had no significant differences over the different ecotones. In consideration of all these environmental factors studied, Pearson's correlation analysis showed that the all environmental factors had obvious correlations with each other except for soil water content and total P that had no obvious correlations with other environmental factors. Principal component analysis showed that soil pH, soil organic content, litter depth, and light factors took more effect to the first axis, whereas total N and available P took more effect to the second axis. They were all the main determinants for the distribution of the three different stand zones.

Key words: tropical coniferous forest, tropical broadleaved forest, coniferous-broadleaved forest ecotone, envrionmental characteristic, Hainan Island

CLC Number:

S718.52

Zhang Junyan, Cheng Kewu, Zang Runguo, Ding Yi. Environmental Characteristic Across a Tropical Coniferous-Broadleaved Forest Ecotone[J]. Scientia Silvae Sinicae, 2014, 50(8): 1-6.

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Environmental Characteristic Across a Tropical Coniferous-Broadleaved Forest Ecotone

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