摘要
[目的]研究植物纤维沙障、牛羊粪沙障和牛羊粪沙障+植物纤维沙障对甘肃省玛曲县沙化草地恢复效果,为玛曲县沙化草地治理提供有效沙障。[方法]以玛曲县未布设沙障沙化草地为对照,比较了植物纤维沙障、牛羊粪沙障和牛羊粪沙障+植物纤维沙障布设后沙化草地植物和土壤性质的变化。[结果]①牛羊粪沙障和牛羊粪沙障+植物纤维沙障对植被恢复效果较好。物种数由4种均增加为11种,植物群落平均盖度由7.28%依次增加到48.21%和58.29%;植物平均高度由6.67 cm依次增长到35.17和30.70 cm;植物平均干重由4.46 g/m 2依次增加到81.17和80.70 g/m 2;植物平均枯死率由9.55%依次降为7.00%和6.80%。②牛羊粪沙障和牛羊粪沙障+植物纤维沙障对0—5 cm土壤养分提升显著。全氮由0.154 g/kg依次增加到0.370和0.491 g/kg;土壤碱解氮由4.78 mg/kg依次增加到13.99和19.78 mg/kg;速效磷由1.64 mg/kg依次增加到5.54和6.20 mg/kg;速效钾由21.07 mg/kg依次增加为55.37和56.90 mg/kg。[结论]综合考虑恢复效果、成本和降解因素等,牛羊粪沙障为玛曲县沙化草地治理较理想的沙障布设方式。
[Objective]The effects of plant fiber sand barriers,cattle and sheep dung barriers,and sand barriers comprised of cattle and sheep dung combined with plant fiber were studied in order to create effective sand barriers for the restoration of desertified grassland in the alpine area at Maqu County,Gansu Province.[Methods]Sand barriers made of plant fiber,cattle and sheep dung,and cattle and sheep dung combined with plant fiber were installed in the alpine area at Maqu County.Plant and soil characteristics in the grassland before and after installing the sand barriers were compared.[Results]①Sand barriers made of cattle and sheep dung,and made of cattle and sheep dung combined with plant fiber produced good effects with regard to vegetation restoration.The average plant community cover grew from 7.28%to 48.21%and 58.29%,respectively,and the number of species increased from 4 to 11.Plants grew taller,increasing from an average of 6.67 cm to 35.17 cm and 30.70 cm,respectively.Average plant dry weight increased from 4.46 g/m 2 to 81.17 g/m 2 and 80.70 g/m 2,respectively.The plant dieback rate dropped from 9.55%to 7.0%and 6.80%,respectively;②Cattle and sheep dung sand barriers as well as cattle and sheep dung sand barriers combined with plant fiber greatly boosted soil nutrients at the 5 cm depth.Total nitrogen increased from 0.154 g/kg to 0.370 g/kg and 0.491 g/kg,respectively.Soil alkaline hydrolyzed nitrogen rose from 4.78 mg/kg to 13.99 mg/kg and 19.78 mg/kg,respectively.Available phosphorus increased from 1.64 mg/kg to 5.54 mg/kg and 6.20 mg/kg,respectively.Available potassium increased from 21.07 mg/kg to 55.37 mg/kg and 56.90 mg/kg,respectively.[Conclusion]Considering the vegetation restoration effects,costs,and degradation factors,cattle and sheep dung sand barriers are the ideal technique for vegetation restoration of desertified grassland in alpine area of Maqu County.
作者
赵增新
唐进年
李银科
王祺
刘有军
杨雪梅
袁宏波
曹晓涛
Zhao Zengxin;Tang Jinnian;Li Yinke;Wang Qi;Liu Youjun;Yang Xuemei;Yuan Hongbo;Cao Xiaotao(College of Resources and Environment,Gansu Agricultural University,Lanzhou,Gansu 730070,China;Gansu Minqin National Studies Station for Desert Steppe Ecosystem/Gansu Desert Control Research Institute,Lanzhou,Gansu 730070,China;College of Tourism,Lanzhou University of Arts and Sciences,Lanzhou,Gansu 730070,China)
出处
《水土保持通报》
CSCD
北大核心
2023年第4期68-76,共9页
Bulletin of Soil and Water Conservation
基金
甘肃省重点研发计划项目“黄河首曲高寒沙化草地恢复措施评价与精准治理范式建立”(21YF5FA037)。
关键词
牛羊粪沙障
沙化草地
植被恢复
土壤养分
高寒区
cattle and sheep dung sand barrier
desertified grassland
vegetation restoration
soil nutrient
alpine area
