关键词: 干物质积累, 光合势, 粒叶比, 光合速率, 净同化率

Abstract: Selecting five representative gentle slopes along the Pengze-Hukou highway in Jiangxi Province of China as experimental sites, topsoil was applied to carry out ecological restoration,and line transect method was adopted to investigate the plant growth on the slopes one year later.It was feasible to take advantage of topsoil resources on the ecological restoration of the highway’s gentle slopes. Satisfactory results were obtained by implementing all experimental designs,among which, covering the gentle slopes with 7-10 cm depth of topsoil and artificially broadcasting plant seeds made the plant community structure on the slopes reached the initial stage of succession, with higher Simpson diversity index (averagely 0.80) and Pielou evenness index (averagely 0.84) and significantly higher biomass accumulation (averagely 446 g·hm^-2) and woody importance value index (averagely 14.5), being an available approach for the stability and continuity of plant community structure on the gentle slopes.

Key words: dry matter accumulation, photosynthetic potential, ratio of grain to leaf, photosynthetic rate, net assimilation rate.