Ecological Risks Arising from the Impact of Large-scale Afforestation on the Regional Water Supply Balance in Southwest China.

Table 2 shows that the contribution rate of evapotranspiration to water resources revealed an increasing trend and, conversely, the contribution rate of precipitation revealed a decreasing trend, which indicated that evapotranspiration was gradually replacing precipitation as it pertains to the contribution rate to local water supply, and that evapotranspiration was the main cause for local droughts.

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