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Food is god for the people, utilize solar energy to cook and cut down the forest reducibly , is favorable to water and soil conservation, reduce the air pollution caused by the fact that the timber is burnt at the same time , according to the incomplete statistics, Nigerian timber used to cooking is more than 100 million every year.

民以食为天,利用太阳能做饭可减少砍伐林木,有利于水土保持,同时减少因木材燃烧造成的空气污染,据不完全统计,尼每年用于做饭的木材为1亿立方以上。

The coast forest onion onion, in green grass cushion cushion, the lake the blue water is clear, near the lake alley, the pebbles shoal, the stair slope protection, the countless changes, causes the lake shore smoothly to stand erect from time to time, the edges and corners are distinct, from time to time the mountain riddlings fold, completely relaxed.

沿岸林木葱葱、绿草茵茵、湖中碧水粼粼,临湖小路,卵石浅滩,台阶护坡,变化无穷,使湖岸时而平滑直立,棱角分明,时而山石层叠,令人心旷神怡。

Roading Engineer, Wood Supply Department

林木采伐部,道路经理

For example, to avoid soil water and soilloss, increase the soil nutrition, mixed stands of Sabaigrass took effect.

其中,纯种龙须草和龙须草-林木复合种植能有效地防止速效氮、磷、钾的流失,增加土壤养分含量,培肥土壤。

It is pointed out bythe monthly dynamic analysis and yearly comparative analysis that the improvementof soil water conservation functions in purple soil sloping fields by planting Pure and mixed stands of Sabaigrass vegetation is synchronous with the local raining rhythmand the longer planted the better the effect.

月季动态分析和年际间比较分析指出,龙须草纯种植被和龙须草-林木复合种植植被对紫色土荒山坡地土壤蓄水性能改良效果既与当地降雨节律同步,又呈现出随着处理年限延长而强化的趋势。

Sabaigrass planting improves the soil water conservation functions. The study results indicated: vegetation influenced the soil water conservationfunctions of the purple sloping fields greatly. Pure and mixed stands of Sabaigrassvegetation not only improved the soil water conservation functions in purple soilsloping fields, but also has the better effect than wild vegetation.

2龙须草种植可明显改良土壤蓄水性能本研究结果表明:植被的存在与否对紫色土荒山坡地土壤蓄水性能影响很大,龙须草纯种植被和龙须草-林木复合种植植被不仅极显著地改良了紫色土荒山坡地土壤蓄水性能,而且其改良效果显著好于野生自然植被。

On the basis of reviewing the relevant studies the adjustment and control effects of pine tree smell entomological semiochemical of Scolytidae and other chemicals attack behavior to host were described in detail .

在综合大量国内外研究成果的基础上,就松树寄主气味,非寄主气味,小蠹虫信息素以及其他化学信息物质对调控小蠹科害虫侵袭寄主林木等的行为,作了系统详细的论述。

Research Institute of Forestry, CAF, Silvicultural Laboratory of Chinese State Forestry Administration, Beijing 100091, China

中国林业科学研究院林业所,国家林业局林木培育实验室,北京100091

Depending on the size of the stand, each sampling bend, takes from the main Casuarina silvicultural boundary line near the sea, and then acrosses the stands.

应用因素分析与鉴别分析,建构健康指标协助评等,以了解海岸林木麻黄的健康状况。

For different silvicultural measures, the mechanical properties of Pinus sylvestris plantations were measured and analyzed. The results showed that the effect of silvicultural measures on many mechanical properties of Pinus sylvestris Plantations were not significant..In order to increase the mechanical properties of wood, growth-promoting and then get the better structure building lumber and glued lamination board, the stands on south slope or at the down of slope, and with density of 1.5m×1.0m, properly thinning could be selected. Results of this study can provide a theoretical base and good guidance for oriented breeding of Pinus sylvestris plantations.

摘 要:对不同培育措施的人工林樟子松木材力学指标进行测试和分析,结果表明:不同的培育措施(初植密度、间伐强度、坡向、坡位)对樟子松人工林木材的绝大多数力学强度指标有显著的影响,可选择阳坡、坡下、1.5m×1.0m、轻度间伐林分进行定向培育,来提高木材力学强度性能,从而加快林木生长,培育高产、优质的结构、建筑用材及胶合板材林。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

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