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。
2
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。
3
Plant trees and grasses, and protective froest, form new agr-ecosystem.