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共检索到16条 ,权限内显示50条;
Major Uses of Land in the United States, 2007
- 关键词：
- agricultural land
- 年份：
- 2011
- 摘要：
- ); grassland pasture and rangeland at 614 million (27 percent); cropland...
Measuring the Indirect Land-Use Change Associated With Increased Biofuel Feedstock Production: A Review of Modeling Efforts: Report to Congress
- 关键词：
- Renewable fuels feedstocks biofuel climate change land use economic model agricultural economics
- 年份：
- 2011
- 摘要：
- of agricultural land in the United States. If crop yield per acre incr ...
Grassland to Cropland Conversion in the Northern Plains: The Role of Crop Insurance, Commodity, and Disaster Programs
- 关键词：
- cropland
- 年份：
- 2011
- 摘要：
- e grasslands being converted to cropland in the United States and espec ...
Commodity Payments, Farm Business Survival, and Farm Size Growth
- 关键词：
- cropland
- 年份：
- 2007
- 摘要：
- In the last 25 years, U.S. crop farms have steadily declined in number and grown ...
Major Uses of Land in the United States, 2002
- 关键词：
- agricultural land
- 年份：
- 2006
- 摘要：
- and nonagricultural land over time. The United States has a total land ...
Major Uses of Land in the United States, 1997
- 关键词：
- cropland
- 年份：
- 2001
- 摘要：
- This report provides land use estimates for major land uses in the United States ...
