The Re-distribution Pattern of Pinusdensata Forest Precipitation in Tibet Sejila Mountains

Abstract

Abstract: The relationship between Pinusdensata interception loss,P.densata canopy interception,stem flow and atmospheric rainfall in Tibet Sejila Mountains were studied.The result shows that during the observation period,the total precipitation reached 337.90mm,among which,the canopy interception was 82.17mm with retention rate as 24.32% and amplitude of variation 13.19%～68.72%.Through fall precipitation was 215.76mm with penetration rate at 63.85% and change in the range of 1.67%～13.57% and stem flow was 39.97mm with stem flow rate at 11.83% and change range being 29.70%～73.26%.The fitted functions which represents the relationship between canopy interception,through fall,stem flow and rainfall were a power function,a linear function and second order function,respectively.The occurrence of canopy interception and precipitation was synchronous while that of penetration and stem flow not.The through fall and stem flow won’t appear until precipitation reaches certain level,starting with small amount and increasing gradually.

Key words: Pinusdensata, canopy interception, stem flow, distribution pattern, Sejila Mountains

CLC Number:

S715.2

Wujin Danzeng, ZHENG Weilie, ZHANG Kunlin, LU Jie. The Re-distribution Pattern of Pinusdensata Forest Precipitation in Tibet Sejila Mountains[J]. FOREST RESOURCES WANAGEMENT, 2013, (6): 133-136.

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