• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Changes in vegetation cover on the Younghusband Peninsula transgressive dunefields (Australia) 1949-2017
【24h】

Changes in vegetation cover on the Younghusband Peninsula transgressive dunefields (Australia) 1949-2017

机译：Younghusband Peninsula濒临覆盖的植被覆盖的变化（澳大利亚）1949-2017

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

Studies have shown that the impact of climate change, human and animal actions on coastal vegetation can turn stabilized dunes into active mobile dunes and vice versa. Yet, the driving factors that trigger vegetation changes in coastal dunes are still not fully understood. In the transgressive dunefields of the Younghusband Peninsula (south-east coast of South Australia) historical aerial photographs show an increase in vegetation cover over the last similar to 70years. This study attempts to identify the causes of the changes in vegetation cover (1949 to 2017) observed in a typical section of the coastal dune systems of the Peninsula. Vegetation cover was first estimated for various years using the available historical aerial photography (long-term changes - 1949 to 2017) and recent satellite imagery (short-term annual changes - 2010 to 2017) for the area, and then results were discussed against the observed changes in climatic variables and rabbit density, factors that could have played a role in this transformation. Results of long-term changes show that the vegetation cover has increased significantly from 1949 to 2017, from less than 7% vegetation cover to almost 40%, increasing dune stabilization and forming parabolic dune systems. Periods with the largest growth in vegetation cover (1952-1956 and 2009-2013) coincide with a significant decline in rabbit numbers. Rabbit density was found to be the primary factor linked to the rapid vegetation growth and stabilization of the dunefield, for both decadal long-term (last 68years) and annual short-term changes (last 8years). Other factors such as changes in rainfall, aeolian sediment transport, land use practices, and the introduction of invasive plants have apparently played a limited to negligible role in this stabilization process. (c) 2018 John Wiley & Sons, Ltd.
机译：研究表明，气候变化，人类和动物行动对沿海植被的影响可以将稳定的沙丘变成活跃的移动沙丘，反之亦然。然而，触发沿海沙丘植被变化的驱动因素仍然不完全理解。在YounghusBand半岛（南澳大利亚东南海岸）的近期邓菲维斯中，历史空中照片显示植被覆盖的增加与70年相似。本研究试图确定在半岛沿海沙丘系统的典型部分观察到植被覆盖（1949年至2017）的变化的原因。植被覆盖首先使用可用的历史航空摄影（长期变化 - 2017年）和最近的卫星图像（2010年短期变化 - 2010年至2017年），然后讨论了结果观察到气候变量和兔子密度的变化，可能在这种转变中发挥作用的因素。长期变化的结果表明，植被覆盖率从1949年到2017年显着增加，植被覆盖率低于7％，近40％，增加了沙丘稳定和形成抛物面沙丘系统。植被覆盖率增长最大的时期（1952-1956和2009-2013）一致兔数大幅下降。发现兔子密度是与邓菲尔德的快速植被生长和稳定的主要因素，两条长期（过去68年）和年短期变化（最后8年）。其他因素，如降雨，海湾沉积物，土地利用实践等因素，以及引入侵入式植物的引入显然在这种稳定过程中的忽略作用显然起到了限制。 （c）2018 John Wiley＆Sons，Ltd。

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