毛乌素沙地臭柏、油蒿细根生产动态及影响因子The Fine Roots' Production Dynamic and Influence Factors of Sabina vulgaris and Artemisia ordosica in Mu Us Sandland
吴国玺,张国盛,王林和,秦艳,邬俊义,郝云龙,于斯琴高娃
摘要(Abstract):
在毛乌素沙地开发整治研究中心北试实验地选取了七块样地,并依据建群植被外貌特征划分为臭柏群落、臭柏灌丛、油蒿群落三类。用根钻对各样地一个生长季内的根系进行了五次取样,同时测量土壤水分、枝条生长长度、温湿度等一些气象因子。对活细根分级并称干重,发现臭柏、油蒿不同径级细根的季节动态不同,不同土层内相同径级的细根生产动态也不相同:①臭柏与油蒿D≤2 mm的细根生物量在4~5月份都有一个快速增长的阶段,随后增长格局各不相同。②臭柏灌丛中,1 mm
关键词(KeyWords):
臭柏;油蒿;细根;生产动态
基金项目(Foundation):
国家自然科学基金项目(30471423);;
国家重大基础研究前期研究专项(2004CCA03000)资助
作者(Author):
吴国玺,张国盛,王林和,秦艳,邬俊义,郝云龙,于斯琴高娃
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