網址: https://www.researchgate.net/profile/Benjamin-Runkle/publication/235731817/figure/fig1/AS:299889335521280@1448510597643/Conceptual-model-of-seasonal-water-balances-of-key-landscape-units-of-polygonal-tundra_Q320.jpg
網址2: https://www.researchgate.net/figure/Conceptual-model-of-seasonal-water-balances-of-key-landscape-units-of-polygonal-tundra_fig1_235731817
