水土保持通报2024，Vol.44Issue(3)：36-45,10.DOI:10.13961/j.cnki.stbctb.2024.03.005
甘肃省民勤县荒漠绿洲过渡带典型灌丛植物的滞尘量效应
Dust Retention Effects of Typical Shrub Plants in Desert Oasis Transition Zone in Minqin County of Gansu Province
摘要
Abstract
[Objective]Dust retention of typical shrublands in a desert-oasis ecotone was quantified,in order to provide a basis for the evaluation of dust retention benefits of regional windbreak and sand-fixing tree speciesand the construction of oasis protection systems.[Methods]Field investigations and sampling,indoor washing filtration,and other methods were used to determine the temporal and spatial variation characteristics of dust retention amount and particle size of three shrub species(Holoxylon ammodendron,Tamarix chinensis,and Nitraria tangutorum)in the desert-oasis transition zone along the 4-km range from desert to oasis in early March(winter state)and late June(summer state).[Results]The amount of dust retention gradually decreased from desert to oasis.In early March,the average decreases in dust retention of Haloxylon ammodendron,Tamarix chinensis,and Nitraria tangutorum were 20.74％,16.13％and 14.72％,respectively.In late June,the average decreases were 14.37％,9.23％,and 26.54％,respectively.In early March,Haloxylon ammodendron had the largest amount of dust retention,about 172.36 g/plant.In late June,Tamarix chinensis had the largest amount of dust retention,about 345.16 g/plant.In the first ten days of March,the dust particle size for the three shrubs mainly ranged from 20 to 50 μm,accounting for about 41.00％of the dust that was trapped.A small amount of dust trapped by Haloxylon ammodendron had particle sizes of 500 to 1000 μm,accounting for about 15.00％of the total.In late June,the particle size of the dust ranged from 100 to 200 μm,and a small amount ranged from 5 to 10 μm.[Conclusion]In March and June,the dust retention of the three shrubs showed a decreasing trend from desert to oasis.The dust retention and dust retention particle size of shrub plants were affected by time,space,and plant leaf surface characteristics.关键词
荒漠绿洲过渡带/荒漠植物/滞尘量/粒度特征/甘肃民勤县Key words
desert oasis transition zone/desert plants/dust retention/particle size characteristics/Minqin County of Gansu Province分类
资源环境引用本文复制引用
董正虎,马瑞,王安林,田永胜,刘腾,柴巧弟..甘肃省民勤县荒漠绿洲过渡带典型灌丛植物的滞尘量效应[J].水土保持通报,2024,44(3):36-45,10.基金项目
国家自然科学基金区域创新发展联合资助项目"河西走廊阻沙固沙带防护机理与调控"(U21A2001) （U21A2001）
