shelterbelt 中文意思是什麼

shelterbelt 解釋
防風林帶。

  1. A medium - thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward

    中等厚度的防風林在背風側可在20倍于樹高的距離而在迎風側則在3倍于樹高的距離上減小風速10 %以上。
  2. The shelterbelt kept the sand in check.

    防護林帶擋住了風沙。
  3. A study on the synthetic effect of pastureland shelterbelt

    草牧場防護林綜合效益研究綜述
  4. Thoughts and views of the three north shelterbelt program

    對三北防護林體系工程的思考與展望
  5. Studies on the establishment technology of pastureland shelterbelt

    草牧場防護林營造技術的研究
  6. Shelter structure and effect of farmland shelterbelt in sand - drift area in yulin

    陜北榆林風沙區農田防護林結構配置與效益研究
  7. Discussion on the building technology of sand shelterbelt in the border of liaoning and inner mongolia

    蒙交界地區防沙林帶營建技術探討
  8. Overall thinking of sand control of the three north shelterbelt during the state ' s eleventh five - year plan period

    期間三北防護林工程防沙治沙的總體思路
  9. Abstract : the park design is about the renovation and enlargement based on an old shelterbelt in the suburb

    摘要:這是一個依託城郊老舊防護林帶進行更新擴建的公園設計。
  10. The major strategies for developing non - timber product forest crops during constructing the shelterbelt of the changjiang river are to transform non - timber in the serious water and soil erosion areas, to plan the development scales of non - timber forest in the areas of returning farm to forest, to adjust non - wood products distribution, to establish high productive production bases of non - wood products and to strengthen the macroscopic guide of government for developing non - timeber forest

    對水土流失嚴重的經濟林分佈區進行技術改造、做好退耕還林地上發展經濟林的規劃、適當調整經濟林生產布局、建立高效經濟林生產基地、強化政府的宏觀指導是在長防林建設過程中發展經濟林的主要對策。
  11. Contributing factors of soil erosion in fanuland shelterbelt network area of western heilongjiang province and control measures

    黑龍江省西部農田林網區水土流失成因與防治對策
  12. Effects of shelterbelt on physiological and ecological characteristics and biomass of crops. protective plantation technology. publishing house of northeast forestry university

    防護林網內玉米田生物量和生產力格局研究。植物生態學與地植物學學報， 16 （ 2 ） 。
  13. Third, the quantity of dustfall are different in different shelter forest condition, the distribution order from maximum to minimum is wild, hedysarum scopsrium, ammopiptanthus mongolicus, 4th farm, 2th farm, 3th farm. and the quantity of dustfall in the hedysarum forest, ammopiptanthus mongolicus forest, 4th farm shelterbelt, 2th farm shelterbelt, 3th farm shelterbelt decline 61. 64 %, 73. 7 %, 80. 18 %, 88. 39 %, 78. 48 % comparing with the wild

    （ 3 ）不同防護林狀況下，降塵量也有不同的分佈，其分佈的大小順序為野外花棒沙冬青四場二場三場，花棒、沙冬青、四場、二場、三場防護林內降塵量分別比野外降塵量降低了61 . 64 、 73 . 7 、 80 . 18 、 88 . 39 、 78 . 48 。
  14. As an important part of forestry eco - engineerings, farmland shelterbelt is significant to control desertification, improve farm production, establish new ecological balance, and develop regional economy

    摘要作為林業生態工程的重要組成部分，農田防護林在控制風沙乾旱、提高農業生產水準、建立新的生態平衡、發展區域經濟等方面發揮著顯著作用。
  15. Chins have implemented natural forest protection project, grain for green program, fast - growing and high - yielding progrm, and shelterbelt forestry project etc. in succession since the year of 1998

    摘要1998年以後，國家相繼實施了天然林保護工程、退耕還林工程、京津風沙源治理工程、野生動植物保護及自然保護區工程、速生豐產用材林工程和防護林工程6個林業重點工程。
  16. This article is concerned with a summary of the implication, principle, current states and development strategics of developing non - timber product forest crops in constructing the shelterbelt of the changjiang river by investigating the construction of the shelterbelt in the upper and middle peaches of the changjiang river in hunan, huber, jiangxi and anhui province and analysing the soc - economic condition in this areas

    通過對湖南、湖北、江西、安徽等省長防林建設的實地考察，結合對當地自然社會經濟條件的分析，對長防林建設過程中發展經濟林的意義、應遵循的原則、存在的問題及發展策略進行了全面的分析。
  17. This made beijing the first chinese city to establish a full circle shelterbelt designated “ emergency shelter. ” the construction of the park followed the dictum : “ green olympics, people ' s olympics, high - tech olympics. ” international bidding was let for design projects and innovative lighting designs

    公園建設運用了全新的理念： 「綠色奧運、人文奧運、科技奧運」的理念；規劃設計方案國際招標的國際化理念；北京市最新的園林照明理念。
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