吉兰泰盐湖防护体系地表蚀积特征  

Wind Erosion and Deposition Features on Surfaces in Jilantai Salt Lake Protection System

作　　者：魏亚娟 解云虎 郭靖 蔺博 王项飞 WEI Yajuan;XIE Yunhu;GUO Jing;LIN Bo;WANG Xiangfei(Department of Resource and Environment,Baotou Normal College,Baotou,Inner Mongolia 014030;College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018;Inner Mongaoia Baotou Steel Rare Earth Steel Plate Co.,Ltd.,Baotou,Inner Mongolia 014010;Urumqi Forestry and Grassland Bureau,Urumqi 830000)

机构地区：[1]包头师范学院资源与环境学院,内蒙古包头014030 [2]内蒙古农业大学沙漠治理学院,呼和浩特010018 [3]内蒙古钢稀土钢材厂,内蒙古包头014010 [4]乌鲁木齐市林业和草原局,乌鲁木齐830000

出　　处：《水土保持学报》2023年第3期116-123,共8页Journal of Soil and Water Conservation

基　　金：自治区高等学校碳达峰碳中和研究专项(STZX202213);内蒙古自治区重点研发和成果转化计划项目(2022YFDZ0027);包头师范学院高层次引进人才科研启动基金项目(BTTCRCQD2020-011);包头师范学院自然科学类一般项目(BSYKJ2021-ZY02);国家重点研发计划项目(2019YFC0507605)。

摘　　要：采用矩阵式插钎法对盐湖防护体系不同防护功能区地表进行野外观测,探究吉兰泰盐湖防护体系地表蚀积特征。结果表明:吉兰泰盐湖防护体系不同防护功能区地表蚀积月际变化呈现明显的波动性。流沙固阻带、封沙育草带主要以风蚀为主,防风阻沙带和盐湖防护林带主要以风积为主。地表沉积物质由外向内趋于细化。流动阻沙带和封沙育草带粒度组成主要以细砂和中砂为主;防风阻沙带和盐湖防护林带粒度组成主要以极细砂和细砂为主。盐湖防护体系表层沉积物平均粒径Φ值、分选系数、峰态和偏度分别为1.66~3.32,0.99~2.91,1.23~2.05和-0.08~-0.89。表层沉积物平均粒径、分选系数、偏度、峰态随着盐湖防护体系由外向内逐渐增加。总体看来,盐湖防护体系营建使地表沉积物趋于细化,有利于土壤细粒物质沉积,对地表起到一定保护作用。To explore wind erosion and deposition features on surfaces in Jilantai salt lake protection system.This study used the plugging-brazing method to observe the actual surface conditions of different protection function areas of the salt lake protection system.Our results showed:The monthly variation of surface erosion and deposition showed obvious fluctuation in different protective function zone of Jilantai salt lake protection system.Fixing shifting-sand zone and fencing dune for grass recovery zone were mainly wind erosion.Surface sediment material tended to be finer from outside to inside.Fixing shifting-sand zone and fencing dune for grass recovery zone are mainly composed of fine sand and medium sand;preventing wind and stopping sand zone and salt lake protection forest zone is mainly composed of very fine sand and fine sand.The average particle size,sorting coefficient,kurtosis and skewness of salt lake protection system ranged from 1.66 to 3.32,0.99 to 2.91,1.23 to 2.05 and-0.08 to-0.89.The average grain size,sorting coefficient,kurtosis and skewness of surface sediments increased gradually with salt lake protection system from outside to inside.In general,it appeared that the construction of the salt lake protection system tended to refine in surface sediment,which is conducive to the deposition of fine-grained soil material and played a protective role for the surface.

关 键 词：蚀积平衡 防护功能区 下垫面 阻沙效果 盐湖防护体系 

分 类 号：S727.23[农业科学—林木遗传育种]