干旱区研究2025，Vol.42Issue(4)：637-645,9.DOI:10.13866/j.azr.2025.04.06
腾格里沙漠东北缘飞播30a人工林土壤养分特征
Soil nutrient characteristics of 30-year aerial seeding plantations in the northeastern margin of Tengger Desert
摘要
Abstract
This study investigated the effect of vegetation restoration on soil nutrient accumulation in 1992 in the northeastern margin of the Tengger Desert.To provide a theoretical basis for vegetation construction in arid areas,this study analyzed the changes and cumulative effects of soil nutrients in the Calligonum mongolicum communi-ty and the mixed community(Hedysarum scoparium+C.mongolicum)in the aerial seeding area.(1)Vegetation restoration significantly increased the soil nutrient content in the aerial seeding area.Soil organic matter,total ni-trogen,total phosphorus,and total potassium in the soil of the C.mongolicum community and the mixed commu-nity increased by 60%-105%,123%-161%,129%-149%,and 145%-261%,respectively.The increase in the C.mongolicum community was significantly higher than that in the mixed community and the bare sand control(P<0.05).The vertical distribution of nutrients revealed a surface accumulation effect;the content of the soil layer 0-10 cm from the surface was significantly higher than that of the soil layer 150-200 cm from the surface.(2)The two communities had a positive effect on nutrient accumulation in the soil layer 0-200 cm from the surface,and the effect decreased with increasing depth(P<0.05).The mean positive effect of the C.monogolicum community(0.39)was significantly higher than that of the mixed community(0.29).(3)The soil nutrient recovery indexes of the C.mongolicum and mixed communities were 62.19%and 51.63%,respectively.The results demonstrated that soil nutrients were significantly improved after 30 years of aerial seeding afforestation in the northeastern margin of the Tengger Desert.The C.mongolicum community promoted nutrient accumulation slightly better than did the mixed community,supporting the stable maintenance of artificial sand-fixing vegetation in arid areas.关键词
飞播造林/植被恢复/相对相互作用强度/养分累积/腾格里沙漠Key words
aerial seeding afforestation/vegetation restoration/relative interaction strength/nutrient accumula-tion/Tengger Desert引用本文复制引用
樊昊,唐国栋,赵振宇,李锦荣,邓春涛,王海兵..腾格里沙漠东北缘飞播30a人工林土壤养分特征[J].干旱区研究,2025,42(4):637-645,9.基金项目
内蒙古自治区科技计划项目"黄河流域腾格里沙漠飞播造林区水资源高效利用新业态技术研究"(2022YFHH0096) （2022YFHH0096）
阿拉善左旗2020年飞播造林科技支撑项目(MK0199B012021) （MK0199B012021）
