Figure 3
From: Sap flow of black locust in response to short-term drought in southern Loess Plateau of China

Averaged daily stand transpiration (a) and total water use (b) measured for black locust stands in 2015 and 2016 in the drought and ambient plots at the study site. Note: in 2015, we only measured the sap flow from June 14 to September 22 due to the technical problems. Therefore, the total water use in 2015 was calculated by using the sap flow data from June 14 to September 22. The total water use in 2016 was calculated by using the sap flow data from April 14 to November 14.