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   forest recovery 的翻译结果: 查询用时:0.007秒
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forest recovery
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  林恢复
     THE POSSIBILITY ANALYSIS OF NATURAL POPLAR AND BIRCH FOREST RECOVERY TO DECIDUOUS KOREAN PINE FOREST THROUGH THE METHOD OF LIFE TABLE IN XIAOXINGAN MOUNTAINS
     生命表法分析小兴安岭天然杨桦林恢复成阔叶红松林的可能性
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  林木恢复
     COMPUTER DISTINGUISHING ANALYSIS FOR MONITORING FOREST RECOVERY AT GU-LIAN-HE FOREST FARM
     古莲河林场林木恢复状况的计算机识别分析
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  “forest recovery”译为未确定词的双语例句
     The driving force of dark coniferous forest recovery succession,located in Mount,Mahanis regarded as the competition among the domi-nant tree species.
     青杆林次生恢复演替的主要动量是优势乔木树种之间的竞争,演替过程是由于种间竞争所导致的种群消长过程.
短句来源
     Suggestions are made for measures needed to enhance the forest recovery.
     提出了促进森林恢复的一些措施。 图6参18。
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  相似匹配句对
     forest .
     林。
短句来源
     Forest Calamity And Environmental Recovery and Reconstruction
     森林灾害危害及生态环境恢复与重建
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     Recovery and Protection of the Xisbuangbanna Tropical Rain Forest
     西双版纳热带雨林的恢复与保护
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     ELF IN FOREST
     森林之灵
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     ON MINERAL RECOVERY
     谈选矿回收率问题
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  forest recovery
Changes like this have resulted in forest recovery in other places, mostly in temperate zones, but there have been few studies of this phenomenon in the tropics.
      
However, in the islands of Guadeloupe and Martinique (Lesser Antilles), deficient forest recovery was evidenced in 43 mangrove sites (>amp;gt;1000 m2) affected by apparently natural tree mortality.
      
Forest recovery in abandoned agricultural lands in a karst region of the Dominican Republic
      
Studies indicate that ECM linkages can reduce plant competition for resources, promote forest recovery, and influence the pattern of plant succession.
      
Multiple proxies indicate forest recovery and soil stabilization beginning ~1100 to 1000 14C yr BP, following the collapse of Classic Maya civilization.
      
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The driving force of dark coniferous forest recovery succession,located in Mount,Mahanis regarded as the competition among the domi-nant tree species.The recovery process is apopulation process regu-lated by interspecific competition.From this point of view,theLotka-Volterra competitive equations are taken as a mathematicaldescription which predicts that as a result of competition,themonoculture of Picea wilsonii will form as a steady state or climax,the model well coincide with field observation

青杆林次生恢复演替的主要动量是优势乔木树种之间的竞争,演替过程是由于种间竞争所导致的种群消长过程.据此我们把 Lotka—Volterra 竞争方程尝试性的应用于森林植物群落演替的研究.并以甘肃马御山林区青杆林恢复演替为实例,模型运行的结果表明,无论初始状态如何,演替的终局都将形成青杆纯林.

There are about 30 countries and regions in the world increasing theirforest resources(see same author's article in this Quarterly No2, 1989). Butwhich should not be imitated mechanically by China. According to theauthor's view, four points are important. (1) Most of these countriesand regions make the start of forest recovery in their economic depres-sion, therefore, a state policy really guiding people to protect and deve-lop forests is needed. (2) The real carrying capacity of forests should...

There are about 30 countries and regions in the world increasing theirforest resources(see same author's article in this Quarterly No2, 1989). Butwhich should not be imitated mechanically by China. According to theauthor's view, four points are important. (1) Most of these countriesand regions make the start of forest recovery in their economic depres-sion, therefore, a state policy really guiding people to protect and deve-lop forests is needed. (2) The real carrying capacity of forests should beclearly understood, since 1950's, an organized settlement into the forestswas practiced mistakenly in China. (3) Afforestation on waste-and far-mland is restricted by many factors, and its enforcement on a large scaleshould stand up well to any economic analysis and comparison. (4) Sincemanagement of existing forests and available forest lands has been neg-lected for a long time, the potentials of these forests for raising annualincrement and growting stock are enormous. China would not havefavourable turn in forestry, if this step is not firmly taken.

世界约有30个国家和地区的森林资源在增长,不能机械地去模仿。作者认为以下4点是重要的:(1)需要一个真正能诱导群众保护发展森林的国家政策;(2)要清醒地认识森林的支持能力;(3)扩大荒地和农田造林要经得起经济对比分析;(4)莫让现有森林和林地生产力浪费荒芜!

The tree species diversity of swidden fields at 4 successional ages (4 years, 9 years, 29 years, ≈40 years ) following abandonment was measured by applying Shannon-Wiener index (H′), Pielou evenness index (E), Margalef abundance index (D). A comparison in the changes of tree species diversity and rank/abundance in succession was also conducted. The results showed that the 9-year-old Macaranga denticulata forest had the highest value of tree species diversity in the four types. The presence of root sucker and...

The tree species diversity of swidden fields at 4 successional ages (4 years, 9 years, 29 years, ≈40 years ) following abandonment was measured by applying Shannon-Wiener index (H′), Pielou evenness index (E), Margalef abundance index (D). A comparison in the changes of tree species diversity and rank/abundance in succession was also conducted. The results showed that the 9-year-old Macaranga denticulata forest had the highest value of tree species diversity in the four types. The presence of root sucker and above-ground sprout not only led to the earlier appearance of the peak of tree species diversity, but also accelerated the process of the early succession. Swidden fields had still good ability of forest recovery.

在西双版纳热带地区选择了 4块不同演替年龄的刀耕火种弃耕地 (4年、9年、2 9年、大约 40年 ) ,通过“空间代替时间”的办法 ,采用Shannon_Wiener多样性指数 (H′)、Pielou均匀度指数 (E)、Margalef丰富度指数 (D)分别测定其树种多样性 ,并进行了比较研究。结果表明 ,群落的演替阶段不同 ,树种组成及其多样性也有明显差异。在重要值最大的前 5个树种中 ,山黄麻 (Tremaorientalis)群落全部都为先锋树种组成 ;中平树 (Macarangadenticulata)群落仍以先锋树种占优势 ,但已出现两个顶极树种 ;在印度栲 (Castanopsisindica)群落和刺栲 (C .hystrix)群落中 ,很多先锋树种都已消失 ,多数种类系当地季风常绿阔叶林的顶极种。在 9年的中平树群落中 ,其多样性指数、均匀度指数、丰富度指数均为最大 ,先锋种和演替中、后期的树种共存于这一群落中。可以看出 ,此时正是种间竞争和树种相互替代的高峰期 ,也是种类成分比较不稳定的阶段。随着演替年龄的增大 ,群落的树种多样性指数又呈下降趋势。通过分析初步认为 ,4个群落在不同的发育阶段...

在西双版纳热带地区选择了 4块不同演替年龄的刀耕火种弃耕地 (4年、9年、2 9年、大约 40年 ) ,通过“空间代替时间”的办法 ,采用Shannon_Wiener多样性指数 (H′)、Pielou均匀度指数 (E)、Margalef丰富度指数 (D)分别测定其树种多样性 ,并进行了比较研究。结果表明 ,群落的演替阶段不同 ,树种组成及其多样性也有明显差异。在重要值最大的前 5个树种中 ,山黄麻 (Tremaorientalis)群落全部都为先锋树种组成 ;中平树 (Macarangadenticulata)群落仍以先锋树种占优势 ,但已出现两个顶极树种 ;在印度栲 (Castanopsisindica)群落和刺栲 (C .hystrix)群落中 ,很多先锋树种都已消失 ,多数种类系当地季风常绿阔叶林的顶极种。在 9年的中平树群落中 ,其多样性指数、均匀度指数、丰富度指数均为最大 ,先锋种和演替中、后期的树种共存于这一群落中。可以看出 ,此时正是种间竞争和树种相互替代的高峰期 ,也是种类成分比较不稳定的阶段。随着演替年龄的增大 ,群落的树种多样性指数又呈下降趋势。通过分析初步认为 ,4个群落在不同的发育阶段表现出不同的树种多样性特征 ,这可能是特定区域内群落演替进程中不同生态学种组树种竞争的结果。并且 ,类似条件下的刀耕火种弃耕地具有较好的演替恢复能力。

 
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