Earticle

초록

영어

The research was conducted windward of an irrigated Acacia amplicips Maslin windbreak established to protect As Salam Cement Plant from winds and moving sands. Two belts with approximate optical porosities of 50% and 20% were studied in River Nile State, Sudan. The research aimed at assessing the efficiency of the two belts in wind speed reduction and sand deposition. Research methods included: (i) estimation of optical porosity, (ii) measurements of windward wind speeds at a control and at distances of 0.5 h (h stands for windbreak height), 1 h and 2 h at two vertical levels of 0.25 h and 0.5 h, (iii) estimation of relative wind speeds at the three positions (distance and height) at windward and (iv) estimation of wind erosive forces and prediction of zones of sand deposition. Results show that while the two belts reduced windward wind speeds at the two levels for the three distances, belt II was more effective. Nearest sand deposition occurred at 2 h and 1h windward of belt II and belt I, respectively, at level 0.25 h. At level 0.5 h, sand was deposited only at 2 h windward of belt II and no sand deposition occurred windward of belt I. The study concludes that less porous windbreaks are more effective in reducing wind speed and in depositing sand in windward direction at a distance of not less than twice the belt height.

목차

Abstract
 Introduction
 Materials and Methods
 Materials
  Methods
  Prediction of erosiveness of winds
  Delineation of zones of sand deposition
 Results
  Comparisons of open and relative wind speeds
  Delineation of zones of sand deposition
 Discussion
  Open, relative wind speeds and wind speed reduction coeffic
  Prediction of erosiveness of winds
  Delineation of zones of sand deposition
 Conclusions
 References

키워드

저자

• Dafa-Alla M.D. [ Faculty of Forestry, University of Khartoum-Shambat, Khartoum North 13314, Sudan ] Corresponding Author
• Nawal K.N. Al-Amin [ College of Forestry and Range Science, Sudan University of Science and Technology, Khartoum 11113, Sudan ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634