青海湖东不同沙障处理对披碱草生长特性的影响

Effect of different sand barrier treatment on growth characteristic of Elymus in east of Qinghai Lake

本研究以青海湖东羊场治沙试验区设置的三种沙障内种植的披碱草为研究对象,连续3年对各沙障和裸沙地内的披碱草生长指标进行了测定,结果表明:沙障内披碱草和裸沙地的披碱草在高度、盖度、干草产量、根系生物量上差异显著,三种沙障内的披碱草明显优于裸沙地;不同沙障对披碱草高度、盖度、干草产量及根系生物量的影响均不同,相比较石块沙障和草方格沙障,沙砖沙障有一定的优势;随着年限的增长,草方格沙障和石块沙障内的披碱草生长状况变化不稳定,沙砖沙障内的披碱草长势随着年限的增长基本呈现增长的趋势。

This study was implemented in desert area of east of Qinghai Lake,three kinds of sand barrier was established,which using the method of both field investigation and laboratory analysis for the Elymus planting in both the sand barrier and bare sandy land in continued years. The results showed that there is significantly difference in height,coverage,grass yield and root biomass between planting in sand barrier and planting in the naked sand land and production characteristic of Elumus planting sand barrier growing is superior to planting in the bare sand. The effect of three different types of sand barrier on Elumus growth was different,compared with stone sand barrier and grass square sand barrier,sand brick sand barrier has certain advantages. With the growth of years,the growth of Elumus in grass square sand barrier and stone sand barrier was unstable,and the growth of Elumus in sand brick basically showed an increasing trend with the growth of years.