| 作 者： | Jiao-jun,Zhu,Takeshi,Matsuzaki,Feng-qi,Jiang |
| 出版社： | 中国林业出版社 |
| 丛编项： | |
| 版权说明： | 本书为公共版权或经版权方授权，请支持正版图书 |
| 标 签： | 暂缺 |
| ISBN | 出版时间 | 包装 | 开本 | 页数 | 字数 |
|---|---|---|---|---|---|
| 未知 | 暂无 | 暂无 | 未知 | 0 | 暂无 |
1 Relationships between wind and forests
1．1 Introduction
1．2 Effects of wind on forests
1．2．1 Effects of wind damage on forestry
1．2．2 Ecological effects of wind on trees
1．2．3 Effects of wind on forest ecosystem： effects of storms
1．3 Reciprocal effects of trees or forest on wind
1．3．1 Wind in the environment
1．3．2 How trees or forests work on wind
1．4 Tree windbreak
2 Structures of windbreaks
2．1 Introduction
2．2 Windbreak structure
2．2．1 Structural characteristics of windbreaks
2．2．2 Internal structural characteristics
2．2．3 External structural characteristics
2．2．4 Aerodynamic features characterizing windbreaks
2．2．5 Structural characteristics of wide windbreaks
2．3 Methods for measuring structure of windbreaks
2．3．1 Determination of shelterbelt optical porosity
2．3．2 Ptocesses for determination of optical stratification porosity (OSP)
2．4 Optical porosity/OSP estimated by image processing
2．4．1 Error analysis of optical porosity for narrow windbreaks or shelterbelts
2．4．2 OSP estimated from hemispherical photograph by image processing
2．5 Models of shelterbelt structure： optical porosity
2．5．1 Optical porosity and dominant factors of narrow windbreaks or shelterbelts
2．5．2 Fundamental models of shelterbelt optical porosity
2．6 Model of forest belt structure： optical stratification porosity (OSP)
2．6．1 Model of OSP
2．6．2 Model of OSPin a wide forest belt
2．6．3 Determination of vertical strata by OSP
3 Wind models in trees
3．1 Introduction
3．2 Wind speed within a crown of a single tree
3．2．1 Methods and procedures
3．2．2 Relative wind speed within the crown
3．2．3 Vertical wind profile within a single tree crown
3．2．4 Relative wind speed and crown characteristics
3．2．5 Summary
3．3 Wind profiles within and above a wide windbreak
3．3．1 Wind profiles in and above a forest stand
3．3．2 Wind profiles within and above a wide coastal windbreak
3．3．3 Summary
3．4 Wind speed in a coastal forest belt： Horizontal wind profile
3．4．1 General situation of the coastal forest belt
3．4．2 Instrumentation， data collection and calculation
3．4．3 Wind speed at 2 m height in the coastal forest belt
3．4．4 Summary ．．．．．．．．．．．~ _
3．5 Wind speed in coastal forest belts： Vertical wind profile
3．5．1 Vertical wind profile in Ikarashi coastal forest belt
3．5．2 Vertical wind profiles in Aoyama coastal forest belt thinned with different Lhinning rates
3．5．3 Summary
3．6 Wind profiles near the narrow windbreaks
3．6．1 Wind profiles near model windbreak barriers
3．6．2 Wind profiles near poplar tree windbreaks
4 Characteristics of turbulence
4．1 Introduction
4．2 Characteristics of turbulences in the coastal pine forest belt
4．2．1 Methods and procedures
4．2．2 Mean vertical wind profiles (Horizontal velocity)
4．2．3 Turbulence statistics
4．2．4 Analysis of velocity power spectra
4．2．5 Quadrant analysis
4．2．6 Summary
4．3 Turbulence characteristics in the leeward of shelterbelts
4．3．1 Turbulence characteristics around artificial barriers
4．3．2 Turbulence in the leeward side of tree shelterbelts on farmland
4．3．3 Summary
5 Probability of extreme wind
5．1 Introduction
5．2 Methods and procedures
5．2．1 Site
5．2．2 Instrumentation
5．2．3 Data processing
5．3 General characteristics
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