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。
The year development is not balanced, specially in 1995 before the protective forest builds very few, only had in 1992 builds 1512 ha.
年份发展不平衡,特别是1995年以前防护林营造很少,只有1992年营造1512亩。
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。
Protective maturity is the key in protective forest management.
防护成熟是经营防护林的核心问题。
The realization of information of Zhengzhou urban ecological protective forest will take a good effect for the scientific management and decision and the sustainable development to the urban forest.
The result shows: bioecological characteristics of these tree species can help to choose tree species for planting protective forest in their distributing area.
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.