造林

This paper analyzes several key factors of the impact on the survival rate of the Larix principis-rupprechtii,and considers that the strong sprout seeds and planting seriously is a key factor of increasing the survival rate.

成活率是检验造林成败的一个关键技术指标，对影响华北落叶松成活率的几大关键因素进行了分析，认为良种壮苗和认真栽植是提高造林成活率的关键因素。

The overview discussed the 8 factors affected the survival rates, and the plantable tidal flats and the threshold of waterlogging time of mangroves seedlings. The different inundation classes of mangrove and the critical tidal level fits for mangroves forestation were summarized.

本文从影响红树林造林成活率的8种自然因子和人为因子出发，着重探讨了滩面高程和临界淹水时间，并对国内外对红树植物潮汐淹水的等级的确定，以及国内各地造林过程中的宜林临界线的测定进行了综述。

Form the analysis it is concluded that the forest will decrease the average annual runoff due to silvicultural treatment.

根据分析，本文认为：一般情况下，森林将使多年平均径流量减少，小面积造林减少得多，近似等于森林增加的蒸散发量；大面积造林减少得少，但不低于森林增加的蒸散发量的35%。

The seedlings growth in containers with different combination of materials, size, and medium compound were monitored for three successive years after transplanted on the silvicultural site in order to observe the continuous effects of different treatments and superior traits.

对不同容器材料、尺寸和基质配比下的容器苗作造林后连续3年跟踪调查，以期从一段时间内考察它们在出圃造林后各处理组合及优良性状的持续效应。

Based on the yearly investigation to permanent plots of the 4 10 years old stands, the mean height and DBH of the stands were made as benchmark variables, and main silvicultural techniques and ages of the stands were made as explanatory variables, quantitative regression models of predicting growth of Masson pine plantation were established.

该文利用贵州省台江县马尾松造林技术试验林4～10年生林分的逐年测定资料，以林分平均树高和平均胸径为基准变量、各主要造林技术措施和林分年龄为说明变量，对建立马尾松林分生长的数量化回归模型进行初步研究。

Over the past 30 years, China has afforested more than 54 million hectares of land and become the country with the largest afforestation in the world.

最近30年中国人工造林面积超过5400万公顷，是世界上人工造林最多的国家。

It was suggested that the best method should be the closing off afforested mountains for protection at the first stage planting in the area of intense human-induced disturbance.

川西亚高山人工针叶林土壤生态功能随人为干扰强度的增加而减弱，建议在最易受人为干扰的造林地区，最好是在造林初期封山育林。

The results contributed to the vertical placement of afforesting trees and the applying of the afforesting practice.

这对造林树种的垂直布局和造林抚育措施的实施有一定的指导意义。

It has important social, economic and ecological benefits in afforesting in barren mountains and in dry and hot valleys, in preserving of water and soil, in amending of the ecological environment, and in adjusting the climate.

云南松是云南高原山地更新造林的先锋树种，在荒山、干热河谷地带绿化造林、水土保持、生态环境改善、气候调节等方面，有着重要的社会、经济和生态效益。

In recent year, Pinus densata Mast is one of the major tree species using for afforesting by aerial seeding in Sichuan province.

近年，高山松在四川省飞播造林中大量使用，已成为飞机播种造林的主要树种。

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。