防护林带挡住了风沙。
1978年，中国开始了一项全国性的植树计划，即三北防护林计划，也被称为“绿色长城”。
In 1978, China began a nationwide tree-planting programme known as the Three North Shelterbelt Forest Programme, also known as "the Great Green Wall".
防护成熟是经营防护林的核心问题。
Protective maturity is the key in protective forest management.
每片防护林最少应该有两条线。
砾石沙障和防护林带间建设人工草地。
Artificial grasslands were established between the gravel sand barriers and tree shelterbelts.
禁止毁坏海岸防护林、风景林、风景石和红树林、珊瑚礁。
It is forbidden to destroy seashore shelter belts, scenic woods, scenic rocks, mangroves and coral reefs.
排灌沟系统、道路、防护林三者应尽可结合布设。
The drainage and irrigation ditch system should be combined with roads and protection forest.
当地种植的树木和植物被认为是用于防护林的最佳选择。
Locally grown trees and plants are considered the best choices for windbreaks.
这些防护林带有效地保护了农田，使之免受流沙侵袭。
These tree belts effectively protect the farmland against shifting sand.
这是一个依托城郊老旧防护林带进行更新扩建的公园设计。
The park design is about the renovation and enlargement based on an old shelterbelt in the suburb.
当防护林能允许一小部分风经过的时候，它的作用最有效。
Windbreaks seem to work best when they allow a little wind to pass through.
结合库缘植被恢复，建立防止岸坡遭受侵蚀的立体防护林带；
On the base of this, forest shelter belt should be constructed.
本文对上海市郊防护林主要树种上的害虫种类进行了初步调查。
Investigation into important species of pest on the shelter trees in Shanghai area.
这一结果为小流域尺度防护林建设提够了一定价值的参考依据。
The result offers reference on protection forest system construction in small watershed.
坡地人工植被的生态效益防护林—桔园模式优于无防护林桔园模式。
The ecological effect of the orchard-shelterbelt model is better than that of the orchard model in the gental sloping fields.
防护林不仅能保护土地和庄稼免受狂风的侵蚀，还能提供木材制品。
Windbreaks not only protect land and crops from the wind. They can also provide wood products.
为提高草沙地系统稳定性，采用阔叶树混交方式营建草沙地防护林。
Protection Forest on sandy meadow was established by mixing broadleaf trees to raise stability of sandy meadow system.
阐述了铁路防护林的作用和意义，并对广西铁路防护林现状进行分析。
The present study elaborates the function and significance of shelter forest along railway sides and analyzes its current status in Guangxi.
干旱区绿洲内主要廊道景观类型包括河流、水渠、田间防护林和公路等。
In arid region oasis, the main corridor landscape types include river, ditch, shelterbelt and road.
本文研究了不同作物留茬和建设农田防护林对遏制农田土壤风蚀的效应。
The effects of the stubble of different crops and farmland windbreak on controlling farmland soil erosion are studied.
陕西三北防护林体系建设工程是国家在陕实施的六大林业重点工程之一。
Shaanxi Provincial "Three-North Protection Forest System" development was one of the Six Key Forestry Programs in Shaanxi implemented by the State.
有林地、疏林地和灌木林地中防护林与经济林的面积比例约为34：1。
The area ratio of protection forest and economic forest in forest land, thin stocked land and shrubbery land is about 34:1.
山东省沿海地域辽阔，自然及社会条件复杂多样，沿海防护林建设任务艰巨。
There are expansive coastland and complicated nature and social condition, so the task of constructing coastal defense forest is formidable.
盐结皮是咸水滴灌条件下塔里木沙漠公路防护林土壤表层形成的一种特殊层结。
Salt crust is a unique layer that forms on the soil surface under drip irrigation with saline water in the shelterbelts along the Trim Desert Highway.
草牧场防护林对牧草质量和草场生产力的影响是评价草牧场防护林效益的关键。
The effect of protection forest for pasture on grass quality and grassland productivity is the key for estimating its function.
根据黄土地区防护林生态系统水分循环的特征，提出了防护林生态系统水量平衡方程。
According to the features of water cycle in protective forest ecosystem in loess area, the equation of water balance for the protective forestry ecosystem was put forward.
根据黄土地区防护林生态系统水分循环的特征，提出了防护林生态系统水量平衡方程。
According to the features of water cycle in protective forest ecosystem in loess area, the equation of water balance for the protective forestry ecosystem was put forward.
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