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69篇 您的检索式:作者名="Willms D"
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1短花针茅荒漠草原土壤呼吸对载畜率的响应(英文)显示文摘土壤碳通量是陆地生态系统中碳循环的重要组成部分.为了揭示放牧对荒漠草原土壤呼吸速率的影响,我们采取完全随机区组设计比较研究了不同载畜率下草地土壤的呼吸速率.试验包括4个处理,3次重复.4个处理分别是对照(CK)、轻度放牧(LG)、中度放牧(MG)和重度放牧(HG),相应的载畜率分别为0,0.91,1.82和2.71只羊.hm-2.半年-1.在2004年和2006年8月,采用LI-6400-09土壤呼吸室与LI-6400连接对每个样地的土壤呼吸速率进行了测定,在测定过程中,同时获取了土壤温度及土壤呼吸室中的相对湿度等相关指标.通过对测定数据的分析表明,内蒙古荒漠草原土壤呼吸速率介于0.80μmol.m-2.s-1与5.00μmol.m-2.s-1之间.随着载畜率的增加,土壤呼吸速率明显增加(P<0.05).另外,土壤呼吸速率也随着土壤呼吸室中相对湿度的增加而增大,但是二者的相关关系不太明显(P>0.05).经过2年放牧后,重度放牧条件下的土壤呼吸速率明显低于对照区和轻度放牧区,不同载畜率下土壤呼吸速率随时间的变化并没有明显的差异.高载畜率下土壤呼吸速率明显降低可能与该条件下土壤水分和草地生物量的明显降低有关,土壤水分对土壤和大气之间CO2的交换起着非常重要的作用.王忠武 焦树英 韩国栋 赵萌莉 Walter D Willms 2009内蒙古大学学报(自然科学版)2009,40,2:2
2Obesity-induced overexpression of miRNA-143 inhibits insulin-stimulated AKT activation and impairs glucose metabolism显示文摘Jordan S D Kruger M Willmes D M 2011Nature Cell Biology2011,13,4:1
3Obesity-in- duced overexpression of miRNA-143 inhibits insulin-stimulated AKT activation and impairs glucose metabolism显示文摘JORDAN S D KRUGER M WILLMES D M 2011Nature Cell Biology2011,13,:1
4Distribution of nitrogen fractions in grazed and ungrazed fescue grassland Ahorizons显示文摘Dormaar J F Smoliak S Willms W D 1990Journal of Range Management1990,43,1:1
5Effects of cyclosporin-A on immune response,tissue protection and motor function of rats subjected to spinal cord injury显示文摘Ibarra A Correa D Willms K 2003Brain Res2003,979,12:1
6Quantification and simulation of surface runoff from rescue grassland watersheds显示文摘Chanasyk D S Mapfumo E Willms W 2003Agricultural Water Management2003,,59:1
7Grazing effects on germ- inable seeds on the fescue prairie显示文摘Willms W D Quinton D A 1995Journal of Range Management1995,48,:1
8Quanti{ication and simulation of surface runoff from rescue grassland watersheds 显示文摘Chanasyk D S Map{umo E Willms W 2003Agricultural Water Management2003,59,:1
9Application of artificial intelligence techniques to resistance spot welds显示文摘BROWN J D RODD M G WILLMS N T 1998Ironmaking and Steelmaking1998,25,3:1
10Utilization of rough fescue and Parry oat grass by two grasshopper species and effect of leaf water content and stubble height 显示文摘Willms W D and Johnson D L 1990Environmental Entomology1990,19,:1
11Effecta of cyclosporine A on immune response,tissue protection and motor function of rats subjected to spinal cord injury显示文摘Ibarra A Correa D Willms K 2003Brain Res2003,979,12:1
12Acute respiratory distress syndrome in pregnancy and puerperium:causes,courses,and outcomes显示文摘Catanzarite V Willms D Wong D 2001Obstet Gynecol2001,97,:1
13Influence of litter on herbage production in the Mixed Prairie显示文摘Willms W D McGinn S M and Dormaar J F 1993Journal of Range Management1993,,46:1
14Acute respiratory distress syndrome in pregnancy:Report of three cases and review of the literature显示文摘Catanzarite VA Willms D 1997Obstet Gynecol Surv1997,52,:1
15Place effects for areas defined by administrative boundaries显示文摘BOYLE M H WILLMS J D 1999Am J Epidemiol1999,149,6:1
16Effects of fall defoliation on forage selection by deer and cattle显示文摘Willms W D Bailey A W McLean A and Tucker R 1980Canadian Journal of Animal Science1980,,60:1
17Effects of cyclosporin-A on immune response, tissue protection and motor function of rats subjected to spinal cord injury显示文摘Ibarra A Correa D Willms K 2003Brain Res2003,979,12:1
18Effects of cyclosporin-A on immune response,tissue protection and motor function of rats subjected to spinal cord injury显示文摘Ibarra A Correa D Willms K 2003Brain Res2003,979,12:1
19Quantification and simulation of surface runoff from fescue grassland watersheds显示文摘Chanasyk D S Mapfumo E Willms W 2003Agricultural Water Management2003,59,:1
20Effects of stocking rate on a rough rescue grassland vegetation 显示文摘Willms W D 1985Journal of Range Management1985,38,3:1
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