模拟增温和增雨对冷蒿营养元素分配的影响  

Effects of Temperature and Precipitation Increasing Simulation on Nutrient Element Allocation in Artemisia frigida

作　　者：阿里穆斯[1,2] 席溢[1,2,3] 高清竹[4] 黄永梅[5] 崔箭[1,2] 

机构地区：[1]中央民族大学中国少数民族传统医学国家民委-教育部重点实验室 [2]中央民族大学中国少数民族传统医学研究院,北京100081 [3]中国科学院地理科学与资源研究所,北京100101 [4]中国农业科学院农业环境与可持续发展研究所/农业部农业环境重点实验室,北京100081 [5]北京师范大学资源学院,北京100875

出　　处：《中国农业气象》2013年第5期538-544,共7页Chinese Journal of Agrometeorology

基　　金：教育部长江学者-创新团队计划(IRT0871);国家自然科学基金(30800125);中央民族大学“985工程”项目(CUN 9850304);人力资源与社会保障部“留学人员科技活动项目择优资助”(2009046);北京市科技新星计划(2009A72)

摘　　要：通过野外控制温度和降雨条件模拟气候变化,设计4种试验处理,研究对照(CK)、增温(+2℃,IR)、增雨(+120mm,W)和增温+增雨(IRW)处理对冷蒿(Artemisia frigida Willd.)不同部位(生殖枝与营养枝)营养元素吸收和分配的影响。结果表明:增温、增雨及其耦合作用对冷蒿不同部位营养元素的吸收和分配存在显著差异(P<0.05);与对照相比,增温效果不显著,而增雨显著影响冷蒿对N、K、Mg、Zn、Fe、Mn、Ni元素的吸收和分配(P<0.05);冷蒿不同部位对N、K、Mn吸收与分配比例存在显著差异(P<0.05),但是增温、增雨与不同部位之间无明显耦合作用。说明长期增温与增雨通过改变土壤水分、温度、养分状况和植物内在生长节律,直接或间接影响植物对营养元素的吸收和分配过程。In order to reveal the effects of temperature and precipitation increasing on 12 nutrient element contents of different parts （reproductive branches and vegetative branches） in Artemisiafrigida Willd. , a field experiment with four treatments, including CK（ambient）, IR（＋2℃）, W （＋120mm）, IRW（ ＋2℃ and ＋120mm）, was conducted. The experiment was started in April 2005 and harvested in August 2010. 12 nutrient element contents of different branches were determined by using ICP-AEP. The results showed that W altered significantly the contents and allocation of N, K, Mg, Zn, Fe, Mn and Ni in different parts ofArtemisiafrigida （P 〈0. 05） comparing to CK, but IR did not affected on all of 12 elements. There was no interactive effect among IR, W and different part on all of 12 element contents. In addition, there was a significant difference on the absorption and allocation of N, K, Mn （P 〈 0. 05 ）. The results indicated that long-term temperature and precipitation increasing by changing soil moisture, temperature, nutrient status and plant phenology, affected directly or indirectly plant nutrient elements absorption and allocation process.

关 键 词：增温 增雨 营养元素 分配规律 冷蒿(Artemisia FRIGIDA Willd ) 

分 类 号：S548[农业科学—作物学]