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Microenvironmental heterogeneity of physical soil properties in a broad-leaved Pinus koraiensis forest gap

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Microenvironmental heterogeneity of soil phy-sical properties in 0-20 cm and 20-40 cm soil layers in a broad-leaved Pinus koraiensis forest gap in Xiao Xing'anl-ing Mountains were analyzed by geostatistical method.The results show that the amount of soil water, saturation water capacity, capillary water capacity and porosity in the top layer were greater than those in the lower layer, except for bulk density, where the opposite applied. Soil physical properties in the top soil layer had relatively higher ranges and coefficients of variation. The total and auto correlation spatial heterogeneity of soil physical properties in the top layer were larger than those in the lower layer. The soil water had a strong anisotropic structure in an easterly and northerly direction, but porosity shows isotropy in the same directions. With increasing spatial distance, the other three physical factors exhibited anisotropic structures. The mutual effect between semi-variograms of soil physical properties in the top layer within the spatial autocorrelation range was not significant. For spatial distribution of physical properties within different layers, the patches at the middle and lower ranks in the forest gap dominated.Patches at higher rank were only distributed in the 0-20 cm soil layer and were located north of the forest gap center.

broad-leaved Pinus koraiensis forestforest gapphysical soil propertymicroenvironmental hetero-geneity

Wenbiao DUAN、Jing WANG、Yan LI

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School of Forestry, Northeast Forestry University, Harbin 150040, China

Startup FoundationScientific Research for Postdoctoral settlement in Heilongjiang ProvinceStudy on temporal and spatial change of meteorological factors within canopy gap in broad-leaved Pinus koraiensis forest and seeFoundation of Northeast Forestry University, Study on environmental heterogeneity within canopy gap in broad-leaved Pinus ko

LHK-04031

2009

10.1007/s11461-009-0018-2

中国高等学校学术文摘·林学
高等教育出版社

中国高等学校学术文摘·林学

ISSN：1673-3517
年,卷(期)：2009.4(1)
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