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