• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Agricultural Systems >Changing environmental characteristics of European cropland
【24h】

Changing environmental characteristics of European cropland

机译：欧洲农田环境特征的变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The spatial configuration of agricultural systems is continuously changing in response to changes in demand for agricultural goods, changes in the level of competition between different land use activities, and progress in agricultural technology. This may lead to a change in the location of agricultural systems and consequently to a change in their average environmental characteristics. This paper explores the change in environmental characteristics of cropland (horticulture and field crops) over the years 1950, 1990 and 2000, for Western and Eastern Europe, using basic descriptive statistics. Underlying mechanisms are explored with logistic (interaction) regression analysis.We find that in both Eastern and Western Europe, crop cultivation shifted away from cities. In Western Europe cropland became situated on shallower soils, steeper slopes, and drier and less accessible areas. Probable reasons are that technical progress reduced the importance of traditional constraints such as drought, poor soils, and distance from markets, so that crop farmers were allowed to move to warm and sunny areas where potential productivity is highest. In addition, cropland probably lost some of its competitive power to grassland and nature. In Eastern Europe cropland concentrated on deeper soils and flatter terrain from 1990 onward. Here, the abandonment of the central planning system and a more flexible land market must have allowed a shift of cropland towards more suitable locations
机译：随着对农产品需求的变化，不同土地利用活动之间的竞争水平的变化以及农业技术的进步，农业系统的空间结构正在不断变化。这可能会导致农业系统位置的变化，进而导致其平均环境特征的变化。本文使用基本的描述性统计数据，探讨了西欧和东欧1950、1990和2000年间农田（园艺和大田作物）的环境特征变化。通过Logistic（交互作用）回归分析探索了潜在的机制。我们发现在东欧和西欧，农作物的种植都远离城市。在西欧，农田位于更浅的土壤，更陡的山坡，更干燥且人迹罕至的地区。可能的原因是，技术进步降低了传统限制的重要性，例如干旱，土壤贫瘠以及与市场的距离，以便让农作物种植者转移到潜在生产力最高的温暖和阳光充足的地区。此外，农田可能会失去对草地和自然的某些竞争能力。从1990年开始，东欧的农田集中在更深的土壤和平坦的地形上。在这里，放弃中央计划系统和更灵活的土地市场必须使耕地转移到更合适的地点

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号