Natural Regeneration of Haloxylon Ammodendron Seedlings Could Benefit from a Withered Herbaceous Layer in the Mosuowan Region of the Gurbantünggüt Desert, China
The age classes of regenerated seedlings were investigated and the differences between the different microhabitats in the Mosuowan region of Gurbantünggüt desert,China,were examined.The highest age class was found to be 3 year-old seedlings.The correlations between 5-year-old and 6-year-old seedlings (p<0.01),mature trees and 5-year-old seedlings (p<0.05),and mature trees and 6-year-old-seedlings (p<0.05) were significant.The fertile land under H.ammodendron adult trees was not conductive to seedling regeneration in the sampling areas.The withered herbaceous cover layer ranged from 1.70% to 14.50%.H.ammodendron seedlings regenerated best under the withered herbaceous layer,with a regeneration rate of 180.56±33.54 stems per hectare.The results concluded that: (1) natural H.ammodendron regeneration can benefit from withered herbaceous plants; (2) during the ecological restoration of H.ammodendron populations,an enclosure policy against grazing should be applied in order to protect the herbs and (3) where there is bare ground or mobile dunes without vegetation,checkerboards should be constructed and fixed to the sand surface in order to promote H.ammodendron seed settlement.A conceptual model of H.ammodendron seedling regeneration is also presented in this paper.
H.ammodendron seedling regeneration age structure microhabitat
Chaobin ZHOU Yuyang SONG
Department of Forestry,Agricultural College,Shihezi University,Shihezi,832003,China
国内会议
昆明
英文
1-10
2014-05-24（万方平台首次上网日期，不代表论文的发表时间）