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The study was supported by National Nature Science Foundation of China of ""Biological foundation study of electrical indexes assessing tree vigor"". The mechanism of tree's leaf and stem capacitance and the application of electrical indexes under environmental stresses were studied. The main conclusions are summarized as following:(1) The leaf capacitance had significant positive correlations with leaf exosmosis electro conductivity, exosmosis percentage and leaf absolute moisture content, had significant negative correlations with leaf electrolyte electro conductivity and had no correlations with leaf relative water content.

本研究在国家自然科学基金"林木健康状况评价的电指标生物学基础"的支持下,对树体叶片电容和树体干部电容的机理及外界胁迫因素作用对树体电指标的影响进行了初步研究,研究的主要结论包括:(1)树木叶片电容与单位质量叶片离子外渗液电导率、叶片细胞离子外渗百分率及叶片绝对含水率呈显著的正相关关系,与单位质量叶片总电导率呈显著的负相关关系,与叶片相对含水率的相关性不显著。

Populus is one of the most popular trees in artificial intensive forestry, to select fast growing clones with high WUE rapidly and efficiently is exigent desire of breeding researcher.

本文通过模拟自然干旱和土壤逐渐干旱两种方法对黑杨新品系间的WUE进行了比较,并对WUE差异的机理进行了初步研究,以期为林木育种实践提供可行的方法和理论依据。

Engineering multi-targets and outer-benefits of conversion cropland into forest, modulation flaccidity of forest asset collocated market were analyzed in a new point, after conversion cropland into forest. Relations and focuses of different main bodies were cleared, and a result indicated that benefit maintenances and inner drive collocations of main bodies were the key of follow-up policies.

从新的视角分析了退耕还林工程运营目标的多元性、效益的外部性、退耕还林工程后林木资产配置市场机制调节的软弱性,理清了退耕还林工程不同主体之间的关系及关注的侧重点,得出了培育后续产业维护经营主体利益、调动经营主体的内在动力是后续政策关键的结论。

The quality of the seedlings is necessary to be improved in artificial forestation.

因此,培育高质量的林木种苗成为保证造林质量的重要环节。

Amber is the ancient and fossilized resin of long dead trees that grew in forests millions of years ago.

琥珀是年代古老的一种化石树胶,是几百万前枯死林木长时间化石化的产物。

Here goes lumber from the Maine woods, which did not go out to sea in the last freshet,risen four dollars on the thousand because of what did go out or was split up; pine, spruce, cedar —— first, second, third, and fourth qualities, so lately all of one quality, to wave over the bear, and moose, and caribou.

经过这里的是缅因森林中的木料,上次水涨时没有扎排到海里去,因为运出去或者锯开的那些木料的关系,每一千根涨了四元,洋松啊,针枞啊,杉木啊,——头等,二等,三等,四等,不久前还是同一个质量的林木,摇曳在熊、麋鹿和驯鹿之上。

The effect of genetic improvement will directly depend on the breeding techniques adopted by breeders.

林木遗传改良的效果直接取决于在遗传改良活动中所采用的各项技术。

Wooded green belt, there is a beach environment enriched by many, and played a sand-fixing function.

林木绿化地带,有丰富的海滩环境很多,起到了固沙的功能。

The area which is influenced by the gypsy moth is over 70,000 hm2. In order to control the spreading of the gypsy moth and reduce the harm to forest, the biological characteristic and the life history of the gypsy moth were studied.

为了有效控制舞毒蛾蔓延,减少对林木的危害,在该地区对舞毒蛾的生物学进行了细致研究,摸清了其生活史。

It is learnt that the wood HOMY Hongji implementation of the "cutting edge, while planting trees" strategy to ensure that renewable forest resources, at present, the principles of environmental protection and has achieved initial success.

据悉,HOMY鸿基木业推行"边采伐,边植树"的策略以保证林木资源再生,目前,该环保方针已初见成效。

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在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

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