1·Protective maturity is the key in protective forest management.
防护成熟是经营防护林的核心问题。
2·As there is no fuelwood forest in Haikou city, the firewood is collected chiefly from the protective forest and timber forest.
在没有薪炭林的海口市，薪柴主要来源于防护林和用材林。
3·To meet the needs of protective forest engineering construction and management, it is necessary to develop the forest resources management information system.
为满足各级林业部门防护林建设工程管理的需要，研制开发防护林森林资源管理信息系统已经十分必要。
4·The result shows: bioecological characteristics of these tree species can help to choose tree species for planting protective forest in their distributing area.
研究表明：上述树种的生物学、生态学特性对于其分布区内水土保持、水源涵养及防护林营建的树种选择有积极的意义和可行性；
5·The result shows: bio ecological characteristics of these tree species can help to choose tree species for planting protective forest in their distributing area.
研究表明：上述树种的生物学、生态学特性对于其分布区内水土保持、水源涵养及防护林营建的树种选择有积极的意义和可行性；
6·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。
7·The paper expounds the erosion reduction principle and the technical characteristics of protective forest belt, plans the protective forest belt according to the local wind disaster.
本文通过对防护林带的减蚀原理及技术特点的具体阐述，并依据当地风害情况规划防护林带。
8·Protective functions of forest resources have strong cross-sectoral aspects, as the benefits to agriculture and rural livelihoods are high.
森林资源的保护功能具有很强的跨部门特点，对农业和农村生活有很高的效益。
9·Protective functions of forest resources also contribute to ecosystem conservation efforts.
森林资源的保护功能亦有利于生态系统保护努力。
10·Criteria define the essential elements against which sustainability is assessed, with due consideration paid to the productive, protective and social roles of forests and forest ecosystems.
标准界定了评估可持续性的基本要素，同时适当考虑森林及森林生态系统的生产、保护及社会职能。