干旱区研究2017，Vol.34Issue(5)：1141-1148,8.DOI:10.13866/j.azr.2017.05.24
黄土丘陵沟壑区不同侵蚀微环境对植物更新的影响
Effects of Different Erosion Microenvironments on Plant Regeneration in a Loess Hilly-gully Region
摘要
Abstract
Microenvironment is very important for vegetation regeneration in drought and fragile ecosystems.In this study,the rill,slope of shallow gully and inside of shallow gully were selected as the eroded microenvironments,and the bare slope as the control.The emergence,survival and height of 2-year-old seedlings were surveyed after seven main plant species were reseeded.The following results were obtained:The emergence and survival of seedlings of the studied species in rill or shallow gully were higher than those on bare slope,except the survival of Artemisia gmeliniion seedlings on bare slope was higher than in any other microenvironments.For most species,percentages of seedling emergence and seedling survival in rill were higher than in other eroded microenvironments.Seedling height of seven species on bare slope were shorter than in rill or on slope of shallow gully,or inside of shallow gully,especially the seedling height of Bothriochloa ischaemun,Stipa bungeana and Periploca sepium was significantly shorter on bare slope than in any other eroded microenvironment (P ＜ 0.05).For each eroded microenvironment,there was no uniform regularity for seedling emergence,survival and height among different slope positions (P ＞ 0.05).In conclusion,the eroded microenvironments benefited the key stages of plant regeneration,such as the seedling emergence,seedling survival and seedling growth.However,the effects of eroded microenvironments on plant regeneration performed differently among species.Rational utilization and management of microenvironments are of the realistic value for vegetation restoration in severe habitats.关键词
土壤侵蚀/微环境/细沟/浅沟/出苗/幼苗存活/幼苗生长/黄土丘陵沟壑区Key words
soil erosion/microenvironment/rill/shallow gully/seedling emergence/seedling survival/seedling growth/loess hilly-gully region引用本文复制引用
王东丽,焦菊英,王宁,杜华栋,寇萌,于卫洁,胡澍..黄土丘陵沟壑区不同侵蚀微环境对植物更新的影响[J].干旱区研究,2017,34(5):1141-1148,8.基金项目
国家自然科学基金项目(41371280,41501290,41401306) （41371280,41501290,41401306）
黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金(A314021402-1512) （A314021402-1512）
辽宁工程技术大学第五批生产技术问题创新研究基金(20160046T)资助 （20160046T）
