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用地转偏差方法估算农田林网的区域性防风效应(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1994年03期
Page:
35-40
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
CALCULATING REGIONAL PROTECTIVE EFFECTS OF FARMLAND WINDBREAK NETWORK BY THE METHOD OF GEOSTROPHIC DEVIATION
Article ID:
1000-2006(1994)03-0035-06
Author(s):
Tian Shengpei(Yangzhou Meteorological Bureau Yang zhou 225002)Xuan Dewang; Dong Xiaomin;Zhou Xuedong
Institute of Climate Application of Jiangsu
Keywords:
:Geostrophic deviationFarmland winterbreak networkRegional protective effects
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1994.03.007
Document Code:
A
Abstract:
In this paper,the regional protective effects of farmland windbreak network were calculatedwith a geoctrophic deviation method,the reliability was analysed and the value of the method was applied.The value of protective effects of farmland windbreak network at H(the height of tree) was alsocalculated in the northern coastwise of Jiangsu Province.It is found that(1)protective efficiency ofwindbreak network is 15 %~45% and if the wind force is different, the proteCtive ability is distinct:the stronger the wind is,the more the extent of that is weakened;(2)the influence to the wind direction by the windbreak network is not large;(3)not only the perturbation motion strengthens inside thewindbreak network,but also such a region exists to a certain range outside.

References

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Last Update: 1900-01-01