维普中文期刊产品整合服务
118篇 您的检索式:作者名="Stahr"
    题名 作者 年代 出处 被引量
1冬小麦夏玉米农田土壤呼吸与碳平衡的研究显示文摘为探讨不同农作措施下的农田碳平衡规律,研究农田对大气CO2的“源”、“汇”特征,2000年至2003年连续测定了不同秸秆管理、灌溉和氮肥施用等种植措施下华北冬小麦、夏玉米生长季的土壤呼吸。结果表明,农田CO2释放主要受气温、土壤水分状况和有机物投入量等因素的影响。秸秆还田与优化灌溉增加了土壤呼吸的强度,不同农作措施间土壤呼吸的差异主要发生在冬小麦生长季。对农田碳平衡研究的计算结果显示,农田系统在常规种植措施下表现为大气CO2的“汇”。在传统农作措施下,华北冬小麦、夏玉米生长季植物碳净固定量(NPP)与土壤碳排放量(Rm)的比值分别为1.16、1.21。黄斌 王敬国 龚元石 Karl Stahr 杨倩 2006农业环境科学学报2006,25,1:48
2Review of mechanisms and quantification of priming effects显示文摘Y Kuzyakov J.K Friedel K Stahr 2000Soil Biology and Biochemistry2000,,11:2
3Participatory and Integrated Research in Mountainous Regions of Thailand and Vietnam:Approaches and Lessons Learned显示文摘Participatory and integrated research approaches employed by a long-term Thai- Vietnamese-German collaborative research program, ‘The Uplands Program’, that address the vicious circles of resource scarcity, environmental degrada- tion and rural poverty in mountainous regions of northern Thailand and northern Vietnam are discussed in this paper. We present two examples from the Thai component of the research program to show how different disciplines and stakeholders need to cooperate at different scales to make meaningful scientific contributions towards sustainable land use and rural development in mountainous regions. The case of resource conservation in the Thai highlands shows that local and scientific knowledge, conven- tional surveys and participatory modeling can be creatively combined. Integrated research on the potential of integrating fruit trees and associated technologies into mountain farming systems suggests that natural scientists have to work alongsideeconomists and social scientists to avoid harmful effects of purely technology-driven and productivity- enhancing approaches. The success of new technologies cannot be measured solely by adoption rates and yield increases, but also needs to take into account their long-term impact on various groups of farmers and the ecological, economic and social trade-offs that they entail. Technical and institutional innovations need to go hand in hand to provide viable livelihood opportunities for smallholder farmers in mountain watersheds. The major lesson learned from the first six years of our research in the mountains of Thailand and Vietnam is that conventional and participatory approaches are not antagonistic; if scientists from various disciplines and research paradigms are open-minded, the combination of both approaches can produce meaningful results that cater for the needs of both the academic community and local stakeholders in mountain environments.Andreas Neef Franz Heidhues Karl Stahr Pittaya Sruamsiri 2006Journal of Mountain Science2006,3,4:2
4Corrosion resistance of APS-and HVOF-sprayed coatings in the Al2O3-TiO2 system michael显示文摘Toma F L Stahr C C Berger L M 2009Journal of Thermal Spray Technology2009,4,11:1
5Text Message Reference Service:Five Years Later显示文摘Beth Stahr 2010The Reference Librarian2010,,12:1
6Review of mechanisms and quantification of priming effects 显示文摘Kuzyakov Y Friedel J K Stahr K 2000Soil Biology and Biochemistry2000,32,11:1
7Review of mochallisms and quantification of priming effects显示文摘KUZYAKOV Y FRIEDEL J K STAHR K 2000Soil Biology and Biochemistry2000,32,:1
8Membrane transport proteins associated with drug resistance expressed in human melanoma显示文摘Schadendorf D Makki A Stahr C van Dyck A Wanner R Scheffer GL 1995Am J Pathol1995,147,:1
9Carbon partitioning and below-ground translation by Lolium perenne显示文摘Kuzyakov Y Ehrensberger H Stahr K 2001Soil Biology & Biochemistry2001,33,:1
10A soil and terrain digital database(SOTER) for improved land use planning in central benin 显示文摘Attanda Mouinou Igue Thomas Gaiser Karl Stahr 2004European Journal of Agronomy2004,24,1:1
11Nitrogen pools and turnover in arable soils under different durations of organic farming:Ⅱ:Source-and-sink function of the soil microbial biomass or competition with growing plants?显示文摘FRIEDEL J K GABEL D STAHR K 2001Journal of Plant Nutrition and Soil Science2001,164,4:1
12A Rapid Method for the Deter- mination of Benzo (a) pyrene in Cigarette Smoke显示文摘Oakley E T Johnson L E Stahr H M 1973Tob Sci1973,16,:1
13Effect of clay minerals on immobilization of heavy metals and microbial activity in a sewage sludge-contaminated soil显示文摘USMAN A KUZYAKOV Y STAHR K 2005Journal of Soils and Sediments2005,5,4:1
14Carbon partitioning and below-ground translocation by Lolium perenne显示文摘Y Kuzyakov H Ehrensberger K Stahr 2001Soil Biology and Biochemistry2001,,1:1
15Biomass dynamics of exotic Sargassum muticum and native Halidrys siliquosa in Limfjorden,Denmark-Implications of species replacements on turnover rates显示文摘PEDERSEN F M STAHR A P WERNBERG T 2005Aquatic Botany2005,83,:1
16Electronic commerce, marketing channels and logistics platforms-a wholesaler perspective 显示文摘 STAHRE F 2003European Journal of Operational Research2003,144,:1
17Electronic commerce, marketing channels and logistics platforms - wholesalers perspective显示文摘Aldin N and Stahre F 2003European Journal of Operational Research2003,144,:1
18Vocabulary knowledge and advanced listening comprehension in English as a foreign language显示文摘Stahr L.S 0,,31:1
19Morg1(+/-) heterozygous mice are protected from experimentally induced focal cerebral ischemia显示文摘Stahr A Frahm C Kretz A Bondeva T Witte O W Wolf G 2012Brain Res2012,1482,:1
20Antibacterial mechanism of long-chain po!yphosphate in Staphylococus aureus 显示文摘LEE R M HARTMAN P A STAHR H M 1994Journal of Food Protection1994,57,4:1
返回顶部 每页显示:
共6页 首页 上一页 第1页 下一页 末页 /6 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费