论文部分内容阅读
本文主要是关于朱亭林区几种生长在红壤上的中亚热带森林类型的资料。根据森林水文学的原理,结合地形条件和林业生产方向,把朱亭林区划分为三种林业区。作者认为,水源涵养林的营造和经营是使山区达到生态平衡的有效措施。森林—土壤类型是在一个森林生态系统中比较和评价其水文效应的基本功能单位。按106个标准地的资料,全林区划分为16个森林—土壤类型。以重力水库容为基础,参考水分渗透率,我们把这些森林—土壤类型分别归入5个不同的水源涵养等级中。这些区划、分类和分级工作,对于水源涵养林的经营和造林都是必须的工作。我们提出,级差地租就是森林生态调节量的经济价值,亦即森林生态效应(包括水文效应)的经济评价。从这个观点出发,文中对某些森林—土壤类型进行了水文效应的经济评价,并列出计算过程实例。
This paper mainly focuses on the data of several subtropical forest types growing on red soil in Zhu Tinglin area. According to the principles of forest hydrology, combining terrain conditions and forestry production direction, Zhu Tinglin district is divided into three kinds of forestry areas. The author believes that the construction and operation of water conservation forest is an effective measure to achieve the ecological balance in mountainous areas. Forests - soil types are the basic functional units that compare and evaluate their hydrological effects in a forest ecosystem. According to 106 standard data, the whole forest area is divided into 16 forest-soil types. Based on gravity reservoir capacity, with reference to water permeability, we classify these forest-soil types into five different water conservation classes. These zoning, classification and grading work are all necessary tasks for the management and afforestation of water conservation forests. We propose that differential rent is the economic value of forest ecological regulation, that is, the economic evaluation of forest ecological effects (including hydrological effects). From this point of view, the economic evaluation of hydrological effects on some forest-soil types is presented in this paper, and examples of calculation processes are listed.