黄家二岔小流域能量流的系统分析──Ⅰ．小流域能量流研究体系的建立

Systematic Approach to Energy Flow of Huangjia Ercha Watershed──Ⅰ.Establishment of Research System for Energy Flow of Small Watershed

在评述黄土高原地区小流域能量投入产出现状和国内外有关研究动态的基础上，分析了研究地区基本自然条件和能量投产情况，并制定了该区小流域能量流分析程序，包括确定范围、划分和调查子系统、能量计算、指标分析及能流图绘制。以黄家二岔小流域为研究对象，设定了小流域系统的基本结构和能量流分析方法。

Based on the reviewing of the current research state of energy input and output atsmall watersheds in loess plateau region and the study coiiditions abroad and in home,the basicconditions in nature and input-output of energy in the study area were analysed. from this.thestudy procedure for energy flow analysis was set.which includes scope determination.subsystemdivision and survey. energy calctilation.indices analysis and energy flow figure.Taking HuangjiaErcha watershed as a research subject.the capital structure of small watershed system was estab-lished and the calculating method for energy flow was made.