Biomass Potential in Arizona

摘要: Introduction Arizona's climate and arable lands support a highly productive agricultural community. In 1970, crop livestock marketings produced combined gross income of more than $642 million. By 1978, the annual cash receipts for products had risen to $1.5 billion (Arizona Crop Livestock Reporting Service, 1979). More three million hectares (ha) in Arizona are suitable production, but only slightly 0.5 ha farmed each year. Agricultural production acreage since late 1940s is shown Figure 1. The primary reason that vast areas land not irrigated or developed irrigation absence dependable inexpensive water supply. future agriculture may be influenced significantly by state federal government programs develop new supplies control use existing supplies. Agriculture depletes 90 percent all groundwater pumped Arizona. However, limits on could stem from deliberate societal actions amount used irrigation. projected decline through 2020 (Figure 1) assumes will limited pumping Water Commission, 1977). It assumed projection efforts made reduce create balance supply year 2000, rather waiting until because cost becomes excessive.