Water Balance Measurement of Multiple-Trees: Method and Application Impacts of Climate Change on Soil Water Balance and Grassland Productivity in the Songnen Steppe Downscaling GCM output to simulate potential change of soil water balance on loess tableland QUANTIFYING EVAPOTRANSPIRATION AND BIOPHYSICAL REGULATIONS OF A POPLAR PLANTATION ASSESSED BY EDDY COVARIANCE AND SAP-FLOW METHODS Soil water use and balance characteristics in mature forest land profile of Caragana korshinskii in Semiarid Loess Area Study on Suitable Vegetation Cover on Loess Area Based on Soil Water Balance Impacts of global climate changes on the water and heat factors in the Songnen Steppe A PRELIMINARY STUDY ON THE SOIL WATER BALANCE OF ARTIFICIAL FORESTLAND IN LOESS-HILLY REGION Much Improved Irrigation Use Efficiency in an Intensive Wheat-Maize Double Cropping System in the North China Plain