State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau;
Northwest A&F University;
Yangling 712100;
China;
State Key Laboratory'of Soil Erosion and Dry-land Farming on the Loess Plateau;
Institute of Soil and Water Conservation;
Chinese Academy of Sciences and the Ministry of Water Resources;
Yangling 712100;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
normalized; sap; flow; physiological; adjustments; mixed; afforestation; Pinus; tabuliformis; Hippophae; rhamnoides;