Variation Characteristics of Stem Water Content in Lagerstroemia indica and Its Response to Environmental Factors

Table 2

Intermonthly dynamic change of StWC on sunny days and environmental factor daily mean of Lagerstroemia indica.

Month	Date	Daily mean of environmental factor					Falling time	Valley time	Valley value	Rising time	Mean StWC
		Rn		RH	Ws	10 SMC
5	2018.5.26	305.05	23.53	44.29	0.97	7.58	8:00	13:00	47.13	15:30	50.69
7	2018.7.1	249.54	31.68	59.07	0.73	8.56	7:00	10:30	54.47	19:30	56.15
10	2018.10.2	185.59	16.01	60.19	0.61	9.98	6:00	10:50	57.23	18:00	59.78
12	2018.12.2	139.78	0.95	50.85	0.50	7.66	7:30	12:00	39.79	14:00	46.18

Rn: total radiation (W·m^-2); : air temperature (°C); RH: relative humidity (%); 10 SMC: 10 cm soil moisture content (%); falling time: time of StWC to fall; valley time: time of StWC to reach the minimum value; rising time: time of StWC to rise.