Waterbalance elements of urban hydrological cycle have been measured and investigated, then checked by means of waterbalanceequation in urban areas.
通过精测与调查收集城市水资源要素，并用城市水平衡方法检验。
2
Systematic management model is set up by time series analytic method based on waterbalanceequation to control, predict and manage groundwater resources system.
In soil-plant-atmosphere system, soil available water content, crop water consumption, and effective precipitation are the main factors in waterbalanceequation of farmland.