荒漠区新建林及外围荒漠植被生物量分析

Analysis on Biomass of New Forest in Desert Area and Surrounding Desert Vegetation

对克拉玛依荒漠区新建的新疆杨林和俄罗斯杨林区及其外围3种原有荒漠区的植被类型、覆盖率、植被生物量、碳储量、土壤含水量和可溶性盐总量进行了调查和测定,分析了干旱荒漠区植树造林对原有荒漠植被生物量的影响,探讨了土壤含水量和可溶性盐总量与生物量之间的关系。结果表明,与外围原有荒漠区相比,荒漠区新建新疆杨和俄罗斯杨林区植被类型多样化,植被覆盖率、生物量和碳储量均成倍增加;就两种新建林种而言,俄罗斯杨优于新疆杨,更适合作为改造荒漠区的优良树种;土壤含水量与植被生物量之间呈线性正相关关系;荒漠区植树造林可以增加地面植被生物量和覆盖率,固碳减排效率明显,对当地防风固沙、保持水土、净化空气以及生态安全有重要意义。

In this paper,the vegetation types,coverage rate,biomass,carbon storage,soil moisture and total soluble salts of new planted Populus alba L.,Populus russkii L.forest and surrounding three desert regions in Karamay were surveyed,and the impact of afforestation on vegetation biomass,the relationship among the vegetation biomass and soil moisture,total soluble salts were analyzed.The results show that,the vegetation types,coverage,total biomass,carbon storage of Populus alba L.and Populus russkii L.forest,which afforestated in desert area,were increased in multiples compared with outside original desert area;compared with Populus alba L.,Populus russkii L.were more suitable tree for planting in desert area;the relationship between biomass and the soil moisture content were positive linear correlation;it is clear that afforestation can increase the vegetation biomass and the coverage rate,and it has obvious effects on the carbon sequestration and reducing discharge,and it will play an important roll in wind-break and sand-fixing,water-soil conservation,air purifying and ecological security in desert area.