徐州石灰岩山地新建风景林的初期生态效应

Assessment of Early Stage Ecological Effect to Landscape Forest in the Limestone Hilly Areas of Xuzhou City

徐州市御避山石灰岩荒山新建风景林不同树种配置方式的灌木、草本植物种类及土壤理化性质差异显著。未绿化地没有灌木植物,只有些许草本植物;已绿化地出现多种灌木。其中,混交林内的草本和灌木最为丰富,土壤pH表现为落叶优于常绿,阔叶优于针叶,混交林优于纯样地;土壤有机质和全氮、磷、钾等营养元素则是未绿化样地则高于绿化样地,落叶阔叶样地高于针叶样地。

There were significantly differences about understory vegetation types, soil physical and chemical properties of the new scenic forest at Yubi mountain limestone barren hills in Xuzhou area. There only a little herb and lowest coverage plant in the non afforestation barren hills. And herbs and shrubs were the most abundant at the mixed forest. Soil pH improved effects performance better than the evergreen deciduous, broadleaf better than coniferous, mixed forest better than pure forest. The soil organic matter, total nitrogen, phosphorus and potassium in the non afforestation land was significantly higher than other reforestation land.