阿拉善荒漠区主要灌木林碳氮含量的变化分析  

Research on Carbon and Nitrogen Content of Main Shrub Community in Alashan Area,China

作　　者：乌云娜[1] 蒙仕康[1] 张凤杰[1] 霍光伟[1,2] 雒文涛[1,2] 

机构地区：[1]大连民族学院生命科学学院,辽宁大连116605 [2]辽宁师范大学生命科学学院,辽宁大连116029

出　　处：《大连民族学院学报》2011年第1期5-7,15,共4页Journal of Dalian Nationalities University

基　　金：国家自然科学基金资助项目(30870423);国家973资助项目(2009CB421308);中央高校基本科研业务费专项资金资助项目(DC10050101)

摘　　要：生物因素是促进土壤发生发展的最活跃因素,而植物在长期的适应环境条件的过程对土壤的特性产生重要的影响。梭梭、白刺、盐爪爪是典型的荒漠区地带性植被,其生长状况在维护区域生态平衡和促进国民经济发展中起着重要作用。利用半微量凯式法与TOC仪法对阿拉善吉兰泰荒漠地区梭梭林地主要植物种群和土壤样品的碳氮含量进行了测定,并结合土壤水分含量,分析了该地区植物-土壤功能体碳/氮值的变化规律。结果表明:(1)阿拉善地区土壤含水量较低,在0.51%～0.77%间波动;(2)梭梭等植物的碳、氮质量分数分别在9.1～11.4 mg.kg-1、2.20～2.2 6 mg.kg-1;(3)土壤的碳、氮质量分数分别在0.47～3.31 mg.kg-1、5.57～7.71 mg.kg-1,二者的比值在1.6～2.5。通过上述研究以期为荒漠生态系统的适应性管理提供理论依据。Alashan was typical region of desertification land of China.The biological factor was the most active one to boost soil developing and the plant had an important impact on characteristic property of soil.Haloxylon ammodend,Nitraria tangutorum and Kalidium foliatum were typical desert plants.They played an important role on maintaining regional ecological balance and promoting economic development.The soil biomass Carbon and Nitrogen of main shrub in Jilantai of Alashan were measured by Semimicro Kjeldahl and TOC and the law of the C/N ratio of plants.The developed results were shown as follows：（1） Soil water content was low,fluctuated between 0.43 mg and 0.6 mg.（2） The content of biomass Carbon and Nitrogen of main shrubs was 9.1-11.4 mg/kg、2.20-2.26 mg/kg.（3） The content of soil biomass Carbon was 0.47-3.31 mg/kg.The content of soil biomass Nitrogen was 5.57-7.71 mg/kg and C/N ratio was 1.6-2.5.The study was in order to provide a theoretical basis for ecological rehabilitation and reconstruction of desertification land.

关 键 词：阿拉善 荒漠区 梭梭林地 灌丛 碳氮比 

分 类 号：X171.1[环境科学与工程—环境科学]