作者: Inga A. Zasada , Louise-Marie Dandurand , Cynthia Gleason , Christina H. Hagerty , Russell E. Ingham
DOI: 10.1007/978-3-319-99585-4_8
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摘要: Agriculture in the Pacific Northwest (PNW) of United States is diverse. The states within this region, Washington, Idaho and Oregon, are ranked as 11th, 20th 21st respectively, U.S. for crop value, including nursery ornamentals 2012 (USDA NASS 2014). Combined, over 17 million ha land were farmed region 2015 2016a, b, c). ability to produce a diversity commodities due range eco-climates region. PNW spans three ecoregions defined by Omernik (1987) outlined Commission Environmental Cooperation (1997). Eco-regions areas where type, quality quantity environmental resources generally similar. closest Ocean Marine West Coast Forest. This has precipitation evenly dispersed throughout year narrow temperature with cool summers (temperatures below 22 °C) mild winters above 0 °C). inland forested mountainous found characterized transition from moist, maritime climate west drier, continental east. eastern part PNW, encompassing middle portions Washington Oregon southern portion North American Desert arid an annual approximately 230 mm.