欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

甲烷胁迫对绿地植物生理生态特性的影响

杨文静1,2;董世魁2;张相锋2;刘晓静1   

  1. 1甘肃农业大学草业学院, 兰州 7300702;2北京师范大学环境学院水环境模拟与污染控制国家重点实验室, 北京 100875
  • 收稿日期:2008-11-21 修回日期:1900-01-01 出版日期:2009-07-10 发布日期:2009-07-10

Effects of methane stress on the ecophysiological characteristics of greenbelt plants.

YANG Wen-jing1,2; DONG Shi-kui2;ZHANG Xiang-feng2;LIU Xiao-jing1   

  1. 1Pratacultural College, Gansu Agricultural University, Lanzhou 730070, China; 2State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
  • Received:2008-11-21 Revised:1900-01-01 Online:2009-07-10 Published:2009-07-10

摘要: 甲烷胁迫是限制垃圾填埋场绿化植物存活和生长的主要因素。在室内模拟条件下,利用盆栽试验研究了2种绿地植物高羊茅和苜蓿对甲烷胁迫的适应性。结果表明:甲烷胁迫严重影响2种绿化植物的生长,主要表现在生长速度减小、光合作用减弱、干物质积累量减少;2种植物均通过提高体内脯氨酸含量来增加对甲烷胁迫的耐受力,苜蓿还可以通过降低SOD酶的活性来抵御甲烷胁迫;对2种绿化植物而言,脯氨酸含量可以作为评定其耐甲烷胁迫的主要生理指标。

关键词: 土壤养分, 空间变异, 地统计学, Kriging

Abstract: Methane (CH4) stress is one of the main factors limiting the survival and growth of greenbelt plants on garbage landfill, while the selection of adaptive plants is of significance in the re-vegetation and recovery of the landfill. In this study, two greenbelt plants Medicago sativa and Festuca arundinacea were utilized to testify their adaptability to the CH4 stress in laboratory. The growth rate and net photosynthesis rate of test plants decreased under CH4 stress, but the plants could enhance their CH4-tolerance via the increase of proline accumulation in their organs. M. sativa could also resist the CH4 stress via decreasing its SOD activity. For the two test plants, their proline content could be used as a physiological indicator to judge their resistance to CH4 stress.

Key words: Soil nutrient, Spatial variability, Geostatistics, Kriging