山西吉县退耕地土壤种子库特征研究

Researchs on characteristics of soil seed banks in adandoned croplands along the Yellow River of western Shanxi

为了解晋西沿黄退耕还林地区的土壤种子库分布特征及植被恢复潜力,利用土壤种子库"萌发法"和地上植被调查法,对该地区六种典型植被类型14个样地上的土壤种子库和地上植被进行了研究.研究发现,在所调查的14个样地上,共萌发出3 244粒种子,这些种子隶属于13个科37个种.8个刺槐林地的平均土壤种子库密度和物种丰富度要小于其他样地,尤其是和酸枣林、枣林样地相比,差异显著.

To evalute the vegetation regeneration potential and the seed bank distribution characteristic in west shatLxi along the Yellow River returning farmland to forest areas, the soil seed bank and aboveground vegetation are investigated from six kinds typical planters in 14 sample plots. The results show that 3 244 seeds sprout, and these seeds are attached to 13 branch 37 kinds. Eight artifi- cial robinia~ average soil seed storehouse density and the species abundance are smaller than other types of places. The difference is remarkable comparing with the ziziphus jujube forest and the zizinhus jujube forest.