Potential evapotranspiration changes in Lancang River Basin and Yarlung Zangbo River Basin, southwest China

Figures & data

Figure 1. Locations of the Lancang (LRB) and Yarlung Zangbo (YRB) river basins and meteorological stations in the two basins.

Figure 2. Analysis framework of this study.

Figure 3. (a) Trend-free time series; (b) increasing time series; and (c) decreasing time series.

Figure 4. Mann-Kendall statistic (Z) values of monthly and annual PET in the Lancang River Basin.

Figure 5. Original annual PET series of the LRB and the five representative stations.

Figure 6. Diagnosis graphs of annual PET for (a) the LRB and the representative stations: (b) Nangqian, (c) Changdu, (d) Weixi, (e) Dali and (f) Jinghong.

Figure 7. Mann-Kendall statistic (Z) values of monthly and annual PET in the Yarlung Zangbo River Basin.

Figure 8. Original annual PET series of the YRB and the five representative stations.

Figure 9. Diagnosis graphs of annual PET for (a) the YRB and the representative stations: (b) Lhazê, (c) Shigatse, (d) Damxung, (e) Zetang and (f) Nyingchi.

Table 1. Lancang River Basin – coefficient of determination values (95% probability) for the ANOVA models: (i) including single factor effects (R₁²) and (ii) including both single factor effects and those from interactions between two factors (R₂²). Δ: difference between R₁² and R₂².

	LRB stations
	Nangqian			Changdu			Weixi			Dali			Jinghong
	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ
1	0.67	0.80	0.13	0.76	0.87	0.11	0.78	0.94	0.16	0.81	0.92	0.11	0.81	0.89	0.08
2	0.75	0.89	0.14	0.79	0.96	0.17	0.70	0.84	0.14	0.79	0.91	0.12	0.78	0.87	0.09
3	0.69	0.83	0.14	0.72	0.83	0.11	0.67	0.83	0.16	0.75	0.89	0.14	0.81	0.88	0.07
4	0.69	0.83	0.14	0.73	0.88	0.15	0.76	0.89	0.13	0.70	0.84	0.14	0.78	0.89	0.11
5	0.71	0.88	0.17	0.72	0.86	0.14	0.75	0.89	0.14	0.71	0.86	0.15	0.82	0.96	0.14
6	0.70	0.86	0.16	0.73	0.85	012	0.74	0.87	0.13	0.70	0.87	0.17	0.80	0.87	0.07
7	0.69	0.83	0.14	0.69	0.84	0.15	0.75	0.85	0.10	0.84	0.94	0.10	0.88	0.94	0.06
8	0.65	0.79	0.14	0.70	0.84	0.14	0.72	0.83	0.11	0.86	0.93	0.07	0.82	0.86	0.04
9	0.76	0.89	0.13	0.74	0.87	0.13	0.73	0.84	0.11	0.79	0.86	0.07	0.82	0.88	0.06
10	0.75	0.88	0.13	0.78	0.90	0.12	0.77	0.88	0.11	0.78	0.92	0.14	0.85	0.90	0.05
11	0.75	0.87	0.12	0.73	0.85	0.12	0.72	0.86	0.14	0.72	0.84	0.12	0.82	0.87	0.05
12	0.77	0.88	0.11	0.69	0.83	0.14	0.73	0.88	0.15	0.77	0.89	0.12	0.73	0.81	0.08

Table 2. Yarlung Zangbo River Basin – coefficient of determination values (95% probability) for the ANOVA models (i) including single factor effects (R₁²) and (ii) including both single factor effects and those from interactions between two factors (R₂²). Δ: difference between R₁² and R₂².

	YRB stations
	Lhazê			Shigatse			Damxung			Zetang			Nyingchi
	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ	R1^2	R2^2	Δ
1	0.77	0.86	0.09	0.76	0.86	0.10	0.73	0.87	0.14	0.79	0.90	0.11	0.77	0.88	0.11
2	0.79	0.89	0.10	0.68	0.79	0.11	0.73	0.85	0.12	0.79	0.92	0.13	0.74	0.88	0.14
3	0.81	0.92	0.11	0.77	0.90	0.13	0.78	0.91	0.13	0.72	0.83	0.11	0.71	0.85	0.14
4	0.72	0.85	0.13	0.74	0.88	0.14	0.70	0.85	0.15	0.73	0.86	0.13	0.77	0.92	0.15
5	0.71	0.85	0.14	0.77	0.90	0.13	0.63	0.80	0.17	0.75	0.88	0.13	0.78	0.92	0.14
6	0.74	0.87	0.13	0.71	0.86	0.15	0.71	0.86	0.15	0.75	0.89	0.14	0.70	0.86	0.16
7	0.70	0.84	0.14	0.77	0.90	0.13	0.64	0.84	0.20	0.72	0.86	0.14	0.77	0.88	0.11
8	0.72	0.85	0.13	0.73	0.83	0.10	0.69	0.81	0.12	0.73	0.87	0.14	0.78	0.90	0.12
9	0.67	0.80	0.13	0.78	0.91	0.13	0.73	0.86	0.13	0.73	0.86	0.13	0.74	0.86	0.12
10	0.67	0.81	0.14	0.73	0.88	0.15	0.72	0.86	0.14	0.78	0.93	0.15	0.71	0.85	0.14
11	0.75	0.88	0.13	0.69	0.81	0.12	0.76	0.88	0.12	0.72	0.84	0.12	0.74	0.88	0.14
12	0.79	0.89	0.10	0.79	0.92	0.13	0.77	0.90	0.13	0.74	0.86	0.12	0.75	0.86	0.11