草业科学2011，Vol.28Issue(9)：1645-1648,4.
两种除草剂对狼毒一矮嵩草草地群落重要值及多样性的影响
Effect of two new herbicides on important values and plant diversity of Stellera chamaejasme --Kobresia humilis grassland communities
李鸿林1
作者信息
- 1. 青海省共和县草原站,青海恰卜恰813000
- 折叠
摘要
Abstract
A field survey was conducted to determine the effect of two new herbicides on important values and plant diversity of Stellera chamaejasme-Kobresia humilis grassland communities. This study showed that two herbicides （Langduiing and Mielangdu） greatly affected the important values of plant species of S. chamaejasrne--K, hurnilis grassland communities, indicating that the important values of K. humilis, Stipa purpurea, Poa crymophila, Leymus secalinus increased gradually and these plant species became the dominant, but the S. chamaejasme and Thermopsis lanceolata disappeared. LangDujing and Mielangdu caused one and five plant species to disappear, respectively. Two herbicides decreased the plant diversity of grassland communities, indicating that the Langdujing and Mielangdu reduced the richness index by 15.2% and 31.4% respectively in the coming year. The Mielangdu significantly decreased the dominant index （P〈20.05） but Langdujign did not affect the dominant index. The evenness index was significantly different between Langdujingd and Mielangdu （P〈0.05）. This study suggested that Mielangdu had stronger influence than Langdujing on plant diversity and important values of grassland community.关键词
除草剂/狼毒/矮嵩草/群落/重要值/多样性Key words
herbicide/Stellera chamaejasme/Kobresia humilis/community/important values/diversity分类
农业科技引用本文复制引用
李鸿林..两种除草剂对狼毒一矮嵩草草地群落重要值及多样性的影响[J].草业科学,2011,28(9):1645-1648,4.
