白刺灌丛沙堆的生态位构建作用  

Effect of Nitraria tangutorun Nebkhas in Ecological Niches Building

作　　者：王俊杰 WANG Jun-jie(Gansu Academy of Forestry,Lanzhou 730020)

机构地区：[1]甘肃省林业科学研究院

出　　处：《甘肃林业科技》2019年第3期36-37,共2页Journal of Gansu Forestry Science and Technology

摘　　要：白刺沙包是白刺削弱风速滞留风沙形成的灌丛沙堆。分析指出,沙包发育是白刺的生态位构建过程,通过积沙覆沙蓄水保墒,提高降水有效性;梭梭、沙拐枣则更新覆沙层以构建生态位。砂田和红沙洋芋与之原理相同。When the Nitraria tangutorum stops the sand,it traps part of the sand and forms the nebkhas.Analysis indicates that nebkhas is an ecological niche construction process of Nitraria tangutorum,the effectiveness of precipitation can be improved by accumulating sand and storing water;Haloxylon anmodendron and Calligonum mongolicum updates the sand-clad to create niches.The sand field and Solanum tuberosum have the same principle.

关 键 词：白刺沙包 生态位构建 风沙 粒径 覆沙层 透水保墒 

分 类 号：S793.02[农业科学—林木遗传育种]