查询词典 afforestation

The afforestation practices demonstrated that without guidance of system theory, the efficiency of the forestry production had been influenced, and the further development of silviculture was also restricted to some extent.

人工造林实践表明，缺乏系统思想和理论的指导不仅给林业生产造成了一定不利影响，同时还会限制森林培育学科的进一步发展。

Afforestation tree species in south China,including Chinese Fir,Slash Pine and Timor Mahogany were studied in acid soil.

中国林业科学研究院林业研究所国家林业局林木培育重点实验室北京 100091

Under the State Forestry Administration and the Hubei Provincial People's Government on the 16th, signed a memorandum of cooperation, Wuhan city circle of modern forestry demonstration zone will be completed collective forest right system, the state-owned forestry场圃management system, operation and management of forest classification system three major reforms to improve forest cover, roads and rivers in the rate of afforestation, ecological compensation rate, live stumpage volume, forestry output value, such as development goals.

根据国家林业局与湖北省人民政府16日签署的合作备忘录，武汉城市圈现代林业示范区将完成集体林权制度、国有林业场圃管理体制、森林分类经营管理体制三项重大改革，达到全面提高森林覆盖率、道路和河流绿化率、生态补偿率、活立木蓄积量、林业产值等发展目标。

Layout of the central utility block, units and tank farm as well as afforestation and transportation in the oil refinery have been discussed.

根据景观设计学的另一个研究方向——城市设计的启示，提出了炼油厂总图设计的新构想，介绍了设想的大型炼油厂总平面布置图，讨论了中央公用街区的设置、装置布置、罐区布置、全厂绿化、全厂交通运输等问题，对该设想存在的问题提出了解决的办法。

And accept planting and city afforestation project of tree peony of all kinds of gardens to the outside.

并对外承接各类园林牡丹种植和城市绿化工程。

For 20 years, a nationwide voluntary tree-planting campaign vigorous development of green awareness among all the people, speeding up afforestation and ecological environment construction, and promote economic development and social progress and civilization has played an important role.

二十年来，全民义务植树运动的蓬勃发展，对提高全民绿化意识，加快绿化国土和生态环境建设，促进经济发展和社会文明进步起到了重要的作用。

It is already 20 years past since it was introduced to China in 1988. This paper reviewed the research and application of vetiver system in our agriculture, slope stabilization, and environmental protection, introduced the development and roles of China Vetiver Network, and proposed the potential of vetiver system in barren land afforestation, mine tail re-vegetation, bio-fuel, and green house effect relief.

本文回顾了香根草系统在我国农业、边坡防护、环境保护方面的研究和应用情况，介绍了香根草网络的发展和作用，并提出香根草系统在不毛之地造林、矿山植被恢复、生物燃料和缓解温室效应等方面的应用潜力。

In dry area or sandy dryland, for the reason of scarce rainfall, windiness and lack of labor power and material resources, the low survivor ratio of afforestation were common.

在干旱或荒漠地区造林，降雨稀少，风多且风大，加之人力、物力的贫乏等原因，导致造林成活率低。

The studies showed that the fistular container seedlings may be adopted, but the prior condition is to make sure afforestation in rainy season in time, or the bigger size of cuppy container should be used.

研究认为，在生产上可考虑采用管状容器育苗，但其前提条件是确保梅雨季节能及时造林，否则应选用规格较大的杯状容器。

In chapter 4, the restoration and rehabilitation technology of multiple functional forest system were studied. Firstly, it was expounded that we should restore and rehabilitate watershed protection forest in source of rivers, in catchment areas of small watersheds and around reservoirs, which includes protecting the present natural forests and planting watershed protection forests in the non-forest land. The main afforestation models comprises "Cupressus funebris + Alnus cremastogyne or Robinia pseudoacacia}","Pinus massoniana + Camellia oleifera (or Robinia pseudoacacia","Populus + Robinia pseudoacacia ", etc.

首先阐述了应在河流源头、小流域集水区和水库周围恢复和重建水源涵养林，这包括保护好现有天然林和在无林地营造水源涵养林，主要林种组合模式有&柏木＋梢木（或刺槐丫'／'马尾松＋油茶&、&杨树＋刺槐&等；其次着重论述了坡地水土保持林体系的重建技术，这包括工业原附、经济林、薪炭林、混农林业和退耕还草还牧等的经营和 A 建设技术；接着简要介绍了林牧业产业化途径。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。