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forest decrease
相关语句
  森林减少
     Meanwhile,water pollution and lack of water resources,airborne pollution and acid rain,soil degeneration and deserted, soil erosion,forest decrease,and sea water pollution arealso problems in the world。
     同时,水污染与水资源短缺、大气污染与酸雨、土地退化、沙漠化、水土流失、森林减少和海洋污染等环境问题也十分严重。
短句来源
  “forest decrease”译为未确定词的双语例句
     The control effect could be reached 91. 65% with 10~20 bags (2. 5~0. 5g/bag) in 0. 07 hm2, damaged rate decreased from 21. 85% to 2. 27%, mortality of young forest decrease from 3. 04% to 0. 04%.
     投筠量10~20包(每包重量力2.5~0.5g),其防治效果达91.65%,受害率21.85%下降到2.27%,幼林枯死率从3.04%下降到0.04%。
短句来源
     the woodland demand with population increase and economic development,and the wrong forest industry policy were the main driving factors of forest decrease;
     林地变化主要包括3个层次的驱动因素,人口增长与经济发展的需求以及国家林业政策的失误是林地减少的主要驱动因素;
短句来源
     With the awakening of introspection of environment question, people have been aware of which the current ecological crisis, such as severe atmosphere pollution, water resources shortage, forest decrease is mainly created because human over intervene nature.
     随着对环境问题反思的觉醒,人们已意识到:目前的生态危机,如大气污染严重、水资源短缺、森林面积减少等,主要是由于人类过度干预自然造成的。
短句来源
     Urban expansion and rapid forest decrease are two tendencies as human society has developed up to present.
     城市膨胀,森林锐减,是人类社会发展到今天的两种趋势。
短句来源
     Complex management of chinese fir with soja not only increase food and direct economic revenue, but also increase light energy utilization percent, improve microclimate of the forest, decrease water and soil erosion, improve soil.
     杉木—大豆立体经营,不仅能增加粮食和直接经济收入,而且提高了光能利用率,改善林地小气候,减少林地水土流失,改良了土壤,使杉木幼林年生长量比一级提高20%左右。
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  相似匹配句对
     forest .
     林。
短句来源
     THE DECREASE OF CHINA'S FOREST AREAS AND THE WORSENING OF ECOLOGICAL ENVIRONMENT
     中国森林面积缩减与生态环境的恶化
短句来源
     Forest and Agriculture
     森林与农业
短句来源
     Decrease in Calories
     减少热量
短句来源
     Study on the Mechanism of Forest Bio-diversity Decrease and Its Protection Countermeasures in China
     森林生物多样性减少的机理和保护对策研究
短句来源
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  forest decrease
The frequencies of acidophytic mosses and vascular plants in spruce forest decrease during the transformation process.
      


Urban expansion and rapid forest decrease are two tendencies as human society has developed up to present. A city is artificial environment separated from the nature by mankind. Urban ecosystem is a synthetic body which is composed of natural part and artificial one, and green vegetation occupies an important place in this unique artficial ecosystem. The new subjects which have been brought to foresters by these two tendencies are improvements on the exsiting enviroment of mankind.

城市膨胀,森林锐减,是人类社会发展到今天的两种趋势。城市是人类从自然环境中分离出来的人造环境,城市生态系统是由自然和人工两部分组成的综合体;绿色植被在这个独特的人工生态系统中占有重要位置。研究城市生态,探索城市林业,改善人类生存环境,是这两种趋势向林业工作者提出的新课题。

Euphrates poplar(Populus euphratica Oliv.) is the only tree in desert zones in China. It is playing an important role in safeguarding the balance of ecosystem, providing timber, fire wood and fodder.As the euphrates poplar forest decreased greatly, the ecological conditions in many zones has worsened.That is why conserving, recovering and developing the forest is an urgent matter.Correct definiting the soil conditions is the foundation for carrying out this task.This paper indicates that euphrates...

Euphrates poplar(Populus euphratica Oliv.) is the only tree in desert zones in China. It is playing an important role in safeguarding the balance of ecosystem, providing timber, fire wood and fodder.As the euphrates poplar forest decreased greatly, the ecological conditions in many zones has worsened.That is why conserving, recovering and developing the forest is an urgent matter.Correct definiting the soil conditions is the foundation for carrying out this task.This paper indicates that euphrates poplar resists arid and waterlogging but neither a xerophyte nor a marsh plant; salt-toleranted but not a halophyte; wind and sand combated but not a sand plant.The recovery and development of euphrates poplar forest must be according to the conditions of soil moisture and salt content, and then take appropriate measures, such as closed forest, regenerated forest under sprout and pollarding, forest from farmlands, irrigated forest by flood and planting seedlings.It may be the major species for sheltbelt establishment in irrigated salt-alkali farmlands in arid zones.

胡杨是我国荒漠地区唯一的乔木树种,在维护干旱地区的生态平衡、提供用材、燃料和饲料等方面,都具有重要作用。由于胡杨林大面积减少,不少地区生态条件恶化,维护、恢复和发展胡杨林是当务之急,而正确评价其土壤条件是进行这一工作的基础。研究表明,胡杨抗旱但非旱生,耐涝但非沼生,耐盐但非盐生,抗风沙但非沙生(树种)。胡杨的恢复和发展要围绕土壤条件特别是水分和盐分条件因地制宜地采取相应的措施,如封滩育林、挖桩更新、断根萌蘖、头木作业、退耕还林、引洪灌溉和人工造林等。胡杨抗盐耐涝还可作为干旱地区盐碱地护田林的主要造林树种。

The Central Committee of the Chinese Communist Party and the State Council have paid great attention to afforestation and taken a series of essential policies and measures since 1949, especially in recent ten years. The forest area has increased to 124,650,000ha. It has taken great effects on protecting the ecologic environment, supporting the economic construction and improving the people's lives.Nevertheness,in recent years,the area of commercial forest decreased by 2,850,000ha and the quality...

The Central Committee of the Chinese Communist Party and the State Council have paid great attention to afforestation and taken a series of essential policies and measures since 1949, especially in recent ten years. The forest area has increased to 124,650,000ha. It has taken great effects on protecting the ecologic environment, supporting the economic construction and improving the people's lives.Nevertheness,in recent years,the area of commercial forest decreased by 2,850,000ha and the quality of forest went down,thus bringing some problems to the ecologic environment andeconomic construction in China.In order to protect and utilize the forest resource rationally, main measures are: 1. to strengthen the guiding to afforestation; 2. energetically to plant tree and expand the area of forest;3. to stress the management and control the cut;4. to build and amplify the paid system for using the forest resource and further manage the timber price;5. to increase the investment of forest and enhance aftereffect of forestry development; 6. integratively to utilize the forest resource of the mountainous region and vigorously develop a diversification; 7. to raise the technological level In forestry and quiken the step for developing the forestry;8. to prevent the forest fire, plant diseases and insect pests and forbid felling trees; 9. to carry out horizontal economic and external conneltion; 10. to stabilize the hilly and forest rights and perfect the management forms of forestry.

40年来,特别是近10年来,我国森林面积有所增加。这对保护生态环境、支援经济建设、改善群众生活起着重要的作用。但发展很不平衡,有些林区森林质量下降严重,问题不少。为改变这种局面,要采取十项措施。

 
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