A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau
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A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau
Bulletin of Soiland Water ConservationVol. 10, Issue 2, Pages: 4-7(1991)
作者机构:
中国科学院水利部西北水土保持研究所 陕西杨陵
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Published:1991
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Liu Xiangdong, Wu Qinxiao, Zhao Hongyan. A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1991, 10(2): 4-7.
DOI:
Liu Xiangdong, Wu Qinxiao, Zhao Hongyan. A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1991, 10(2): 4-7.DOI:
A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau
The intercepted precipitation and its variation of the canopy of Pinus tabulaeformis and Populus davidiana of 25 years old have been studied.The conclusion shows that the intercepted precipitation of Pinus tabulae-formis and Popular davidiana are 95
2mm and 73.4mm
accounting for 19.6and 14.700 of yearty total ramfall respectively; Intercepted rainfall is78mm and 71.lmm
accounting for 17.40o and 15
500 of rainfall; Intercepted snow is 17.2mm and 2
3mm
accounting for 45.1%and 5.900 of snowfall.The intercepted amount of the canopy changes with different seasons
In summer
the intercepted amount is 51mm
15.8} of the annual rainfall.In spring and winter
Pinus tabulaeformis intercepted amount is low
and intercepted rate is high
Also
both of them in Populus davidians are low
The interceptive process of the canopy is divided into three stages as intercepting
falling raindrop and saturating
The function between the accumulated interceptation and precipitation presents I=apb.