英文文献：Slippage Effects of the Conservation Reserve Program: New Evidence from Satellite Imagery-保护区计划的滑动效应:来自卫星图像的新证据
英文文献作者：Fleming, David A.
英文文献摘要：
The Conservation Reserve Program (CRP) is the largest land retirement program ever operated in the US. Since its inception in 1985, many researchers have studied the impacts of this program; however, only a few have analyzed how the CRP affects surrounding non–enrolled parcels. In this research I examine how the CRP may affect the conversion of non–cropped land to agriculture, a phenomenon referred to as “slippage” in the literature, and specifically addressed by Wu (2000) and Roberts and Bucholtz (2005). Building on these earlier studies, I empirically model slippage using data derived from satellite imagery that provides information on land cover changes between 1992 and 2001. The study area consists of 1,053 counties located in the Northern Plains, Corn Belt and Lake States regions. Results support the existence of slippage effects from the CRP, but they are more conservative than the ones found by Wu (2000). The evidence of slippage provided here is important information for planners, given that whether and how the CRP affects land use decisions in surrounding areas is key information for implementing conservation efforts more efficiently.

保护储备计划(CRP)是美国有史以来最大的土地退休计划。自1985年启动以来，许多研究人员研究了该计划的影响;然而，只有少数人分析了CRP如何影响周围的非登记包裹。在本研究中，我研究了CRP可能如何影响非耕地转为农业，这是一种在文献中被称为“滑脱”的现象，Wu(2000)、Roberts和Bucholtz(2005)对此进行了具体阐述。在这些早期研究的基础上，我利用提供1992年至2001年之间土地覆盖变化信息的卫星图像获得的数据，对滑移进行了实证建模。研究区包括北部平原、玉米带和湖州地区的1053个县。结果支持CRP的滑移效应的存在，但它们比Wu(2000)发现的更为保守。考虑到CRP是否以及如何影响周边地区的土地使用决策，是更有效地实施保护措施的关键信息，此处提供的滑坡证据对规划师来说是重要的信息。