title: Effects of sand burial on the survival and growth of two shrubs dominant in different habitats of northern China.
abstract: Plants that grow in dune ecosystems always suffer from sand burial. Shrubs play implications on the healthy functioning of dune ecosystems due to control blowing sand. However, the survival and growth responses of shrubs to sand burial remain poorly understood. The survival rate and seedling height of two shrubs (Artemisia halodendron and Lespedeza davurica) along with the soil properties under different burial depths were examined in order to reveal the causing ecophysiological attributes of sand burial on shrubs in the desertified region. It was found that A. halodendron can survive a burial depth of 6 cm greater than its seedling height, which is a dominant shrub in mobile dunes with intense burial, whereas a burial depth equivalent to three fourths of its seedling height is detrimental to L. davurica, which is dominant in fixed dunes with less burial. The reasons for the shrub death under sand burial were associated with the physical barrier to vertical growth and the reduction in photosynthetic area. In conclusion, A. halodendron can facilitate the stabilization of mobile dunes because of their high tolerance to the frequent and intensive sand burial, while L. davurica can be beneficial for the recovery process because of their higher survival rates under shallow burial following restoration of mobile dunes.
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China. quhao@lzb.ac.cn.
authors.forename: Hao
authors.initials: H
authors.lastname: Qu
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China.
authors.forename: Ha-Lin
authors.initials: HL
authors.lastname: Zhao
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China.
authors.forename: Xue-Yong
authors.initials: XY
authors.lastname: Zhao
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China.
authors.forename: Xiao-An
authors.initials: XA
authors.lastname: Zuo
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China.
authors.forename: Shao-Kun
authors.initials: SK
authors.lastname: Wang
authors.affiliation: Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320# Donggang West Road, Lanzhou, 730000, China.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
mesh_terms: D019306:Artemisia / Q000502:physiology*; D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring; D029884:Lespedeza / Q000502:physiology*; D010788:Photosynthesis; D036226:Seedlings / Q000254:growth & development / Q000502:physiology*; D012822:Silicon Dioxide; D012987:Soil
chemical_list: D012987:Soil; D012822:Silicon Dioxide
keywords: Dune shrubs; Horqin Sandy Land; Sand burial; Seedling height; Survival rate