关键词: 刈割, 多样性, 放牧制度, 功能群, 温带草原, 大型土壤动物

Abstract: The phenological characteristics of landscape greening tree species on saline soils can not only determine the best afforestation time, but also provide scientific evidence for landscape configuration of plant communities. Taking the 45 landscape greening tree species in Dongtan Wetland Park of Chongming Island as the objects, an observation was made on the phenology of budding and leaf expansion. The budding period continued from mid March to late April, and 22 species budded in late March. Therefore, the afforestation was advised to be before the end of April. The leaf expansion continued from late March to late May, and the main expansion peak continued from mid April to early May. The landscape configuration of the 45 tree species could be in accord with the time of leaf expansion. According to the phonological differences, the 45 tree species were divided into four types. The trees in the same types were similar in phenological matching relationship, and thus, had certain mutual replacement function in landscape configuration. Some suggestions on the afforestation time and the configuration of tree species were put forward.

Key words: temperate grassland, mowing, diversity, soil macrofauna, grazing system, functional group.