Sentences with phrase «use global hectares»
Studies that are compliant with current Ecological Footprint Standards use global hectares as a measurement unit.
https://www.earthday.org/ Not exact matches
The research team, led by Gregory Asner of the Carnegie Institution's Department of Global Ecology, used innovative remote sensing technology on aircraft to survey the impact of invasives on more than 220,000 hectares (850 square miles) of rain forest on the island of Hawaii.
The ecological footprint is a methodology used to measure the amounts of land and water (in terms of global hectares — gha) that would be needed to support domestic consumption.
Their findings showed a startling 218 - 990 million hectares of land would have to be converted to switchgrass (which is 14 - 65 times as much land as the US uses to grow corn for ethanol); also 17 - 79 million tonnes of fertiliser a year — which would be 75 % of all global nitrogen fertiliser used at present; and 1.6 - 7.4 trillion cubic metres of water a year.