The fact that much of the original or primary forest in most Philippine islands is now gone clearly indicates that we failed in protecting this vital natural resource. No need to cry over spilt milk says the popular expression. What we need to do is to see to it that the forest that remains is protected and the degraded uplands, the product of deforestation and kaingin in previous decades, are rehabilitated especially in critical watersheds across the country. A degraded land has reduced capacity to absorb rain so that much of the water during rainy days flows on the land surface resulting in floods and lowering of the water table (meaning, drying up of wells!). Degraded lands are also infertile and unproductive and thus are a threat to food security. Many of the poorest farmers are also living and farming in these marginal lands.
One last thing: when you drink a glass of water, how do you know that it is not yet contaminated with harmful chemicals?
The global warming figure above was taken from the Renewable Energy Blog