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153篇 您的检索式:作者名="Fryrear"
    题名 作者 年代 出处 被引量
1直立植物—砾石覆盖组合措施的防风蚀作用显示文摘在干旱、半干旱地区 ,由于气候条件的限制和出于经济方面的考虑 ,直立植物—砾石覆盖组合措施常被用来防治地表风蚀和风沙危害。为了给这种措施提供设计方面的参考依据 ,应用直立植物和砾石模型及其不同组合 ,在风洞测定了不同风力条件下的拖曳力 ,进而得出阻力系数 ,以评价其对地表风蚀的防治作用。结果表明 ,阻力系数取决于地表状况和风速 ,在各种地表状况下 ,阻力系数随风速的增大呈指数减小。在分别应用时 ,直立植物和砾石覆盖均可以有效地增大阻力系数。阻力系数的平方随直立植物侧影盖度平方根的增加呈线性增大 ,随砾石盖度的增加呈幂函数增大。当二者组合应用时 ,阻力系数主要取决于直立植物 ,砾石覆盖对阻力系数的贡献有所削弱 ,其作用随植物侧影盖度的增大而减小 ,直至对阻力系数的产生没有任何作用。据此 。董治宝 高尚玉 Fryrear D W 2000水土保持学报2000,14,1:34
2Large-scale variability of wind erosion mass flux rates at Owens Lake显示文摘Gillette D A Fryrear D W Jing B X 1997Journal of Geophysical Research1997,102,25:1
3Wind Erosion:Field Length显示文摘Fryrear D W Saleh A 1996Soil Science1996,161,6:1
4Field wind erosion: vertical distribution 显示文摘Fryrear W D Salth A 1993Soil Science1993,155,:1
5Field wind erosion:Vertical distribution 显示文摘Fryrear D W Saleh A 1993Soil Science1993,155,:1
6Drag coefficients,roughness length and zero-plane displacement height as disturbed by artificial standing vegetation显示文摘Dong Z B Gao S Y Fryrear D W 2001Journal of Arid Environments2001,45,:1
7A single event wind erosion model显示文摘FRYREAR D SALEH A BILBRO J 1998Transactions of the ASAE1998,41,5:1
8Modeling the development of sand transport显示文摘DONG Z B FRYREAR D W GAO S Y 1999Soil Science1999,12,:1
9Drag coefficients and roughness length as disturbed by artificial standing vegetation显示文摘DONG Z B GAO S Y FRYREAR D W 2001Journal of Arid Environments2001,49,3:1
10Threshold wind velocities of wet soils as affected by wind blown sand 显示文摘Saleh A Fryrear D W 1995Soil Science1995,160,:1
11Drag coefficients, roughness length and zero-plane displacement height as disturbed by artificial standing vegetation显示文摘Dong Z Gao S Fryrear D W 2001Journal of Arid Environments2001,49,:1
12Vegetation characteristics and soil loss by wind显示文摘Van den Ven T A M Fryrear D W Spaan W S 1989J Soil Water Cons1989,44,:1
13Soil cover and wind erosion显示文摘Fryrear D W 1985Transactions of the ASAE1985,28,3:1
14Modeling the roughness properties of artificial soil clods显示文摘Dong Z B Fryrear D W Gao S Y 1999Soil Science1999,164,12:1
15Vegetation characteristics and soil loss by wind显示文摘Van den Ven T A M Fryrear D W Spaan W S 1989J Soil Water Cons1989,44,:1
16Drag coefficients and Roughness length as disturbed by artificial standing vegetation显示文摘Dong Zhibao Gao Shangyu Fryrear Donald W 2001Journal ofArid Environments2001,49,3:1
17Vegetation characteristics and soil loss by wind 显示文摘Van de ven T A M Fryrear D W 1989J Soil Water Conserv1989,,44:1
18Soil cover and wind erosion显示文摘Fryrear D W 1985Transactions of the American Society of Agricultural Engineers1985,28,3:1
19Field wind erosion: vertical distribution显示文摘Fryrear D W Saleh A 1993Soil Science1993,155,:1
20Wind erosion losses as related to plant silhouette and soil cover 显示文摘Bilbor J D Fryrear D W 1994Agron J1994,,86:1
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