沙质海岸不同植被梯度带的土壤蓄水功能

Soil Water Storage Ability in Different Plant Gradient on Sandy Coast

对胶南沿海沙质海岸5种植被梯度带下9种植被模式的水分物理性状及土壤蓄水功能进行了研究。结果表明:①随着从沿海至内陆的过渡,胶南沙质海岸带营造灌草带-基干林带-丘陵水土保持林-经济林带-农田林网模式的沿海防护林生态网络体系,对改善该地区的土壤水分物理性质起了积极作用,且土壤层蓄水性能均优于海边草甸。②对沙质海岸来说,沿灌草带、基干林带、丘陵水土保持林带、经济林带和农田林网5个不同的梯度带,土壤物理性状逐渐变好,渗透能力逐渐减弱,土壤层的蓄水能力逐渐增强。③各梯度带内,随着植被类型的不同,其土壤水分物理性状及土壤层蓄水功能表现出一定差异。紫穗槐+草本模式是灌草带值得推广的模式;刺槐是基干林带值得推广的树种;丘陵土保持林带配置应优先考虑以黑松+麻栎为主的针阔混交林模式。

Soil moisture physical properties and soil water storage ability of nine kinds of vegetation in five plant gradient were researched on sandy coast in Jiaonan city. Results indicated that. （1） With the transition from coast to inland, the soil moisture physical properties of forest ecological net system were improved by the way of the plant gradient of shrub and herbage-backbone forest-soil and water conservation forest-fruit forest-farm protective forest network, and the soil water storage capacities of five plant gradient were better than that of seaside meadow. （2）On the sandy coast, along with shrub and herbage, backbone forest, soil and water conservation forest, fruit forest and farm protective forest network, soil physical properties were gradually improving, soil infiltration capabilities were gradually weakening, and the soil water storage ability were gradually strengthening. （3） In all plant gradients, with the difference of vegetation, soil moisture physical properties and soil water storage ability showed great differences. Amorpha fruticosa ＋ herbage model is valuable to popularize model in shrub herbage grads, Robinia pseudoacacia should be promoted in backbone forest belt, mixed forest of Pinus thunbergii＋Quercus acutissirna should be selected firstly in soil and water conservation forest belt on hill.