...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Flora >Fifty years vegetation development of a xerothermic calcareous grassland in Central Europe after heavy disturbance
【24h】

Fifty years vegetation development of a xerothermic calcareous grassland in Central Europe after heavy disturbance

机译：严重干扰后中欧干热钙质草原的五十年植被发育

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

Fifty years ago on the south-facing slope of a limestone hill 4 kin NE of Gottingen (Germany) a small plot of 4 in 2 size was chosen in a xerothermic calcareous grassland (Mesobromion alliance) for investigation. The formerly grazed slope was abandoned a few years prior to the study, but in 1987 intermittent grazing started again. The mean annual temperature in Gottingen (1953-2003) was 8.8 degrees C on the average; the annual mean increased by 1.1 degrees C during the study period. Mean annual precipitation amounted to 642mm (393-1093mm). The mean monthly precipitation during summer (April-August) varied in the range between 29 and 101 mm. In the years 1953-2003 the presence of species was recorded annually in 400 subplots (100 cm(2) each). In part of this time also the amount of bare soil within the plot was recorded, and standing crop and the nitrogen contents in leaves of Bromus erectus were measured in the immediate surrounding of the plot.
机译：五十年前，在哥廷根（德国）东北部4 kin NE的石灰岩山丘的朝南坡上，选择了一块干燥的4分之2大小的小块土地用于高温钙质石灰岩草原（Mesobromion联盟）进行调查。在研究之前的几年，以前是放牧的山坡被废弃了，但是在1987年，间歇性放牧又开始了。哥廷根（1953-2003）的年平均气温为8.8摄氏度。在研究期间，年平均温度升高了1.1摄氏度。年平均降水量为642毫米（393-1093毫米）。夏季（4月至8月）的平均月降水量在29至101毫米之间。在1953-2003年间，每年在400个子图中记录下物种的存在（每个子图100 cm（2））。在这段时间的一部分中，还记录了该小区内的裸露土壤的数量，并在该小区的紧邻区域中测量了直立作物和直立布鲁姆斯叶片中的氮含量。

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