• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>SpringerPlus >The land use changes and its relationship with topographic factors in the Jing river catchment on the Loess Plateau of China
【2h】

The land use changes and its relationship with topographic factors in the Jing river catchment on the Loess Plateau of China

机译：黄土高原the江流域土地利用变化及其与地形因子的关系。

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of soil conservation measures have been carried out to reduce soil loss on the Loess Plateau of China since 1950s, and the biologic measures were implemented according to topographic factors such as slope and elevation; therefore, the changes in topographic factors of land use can indicate the effects of the biologic measures. The objectives of this study were to (i) analyze the land use changes in the Jing River catchment during 1986-2000 and to (ii) examine the effects of biologic measures through relating land use changes with topographic factors. During 1986-2000, the dominant land use types were farmland and grassland (88% of the whole catchment). Compared with 1986, farmland and forest decreased while grassland and construction land increased with little changes in water and unused land. Three main conversion types occurred, i.e. the mutual conversion between forest and grassland, the mutual conversion between farmland and grassland, and farmland converted to other types. The elevation of farmland, forest, construction land and water increased, while that of grassland and unused land decreased. The mean slope gradient of each land use type changed little except for unused land. The above results suggested farmland has greatly decreased on tableland region due to the increase in construction land, forest has moved to gully region while grassland has increased despite elevation and slope. The land use in the Jing River catchment during 1986-2000 was changing to a more reasonable spatial pattern.
机译：1950年代以来，中国采取了一系列水土保持措施，以减少水土流失，并根据坡度和海拔等地形因素采取了生物措施。因此，土地利用的地形因素的变化可以表明生物措施的效果。这项研究的目的是（i）分析1986-2000年靖江流域的土地利用变化，以及（ii）通过将土地利用变化与地形因素联系起来来检验生物措施的效果。在1986-2000年期间，主要的土地利用类型为农田和草地（占流域总量的88％）。与1986年相比，耕地和森林减少了，草地和建筑用地增加了，水和未使用土地的变化很小。发生了三种主要的转化类型，即森林和草地之间的相互转化，农田和草地之间的相互转化以及农田被转化为其他类型。耕地，森林，建设用地和水的海拔升高，而草地和未利用地的海拔则下降。除未使用的土地外，每种土地利用类型的平均坡度变化不大。以上结果表明，由于建设用地的增加，高原地区的耕地大大减少了，尽管海拔和坡度增加，但森林已移至沟壑区，而草地却增加了。 1986-2000年the河流域的土地利用正在改变为更合理的空间格局。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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