Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantationin subtropical China during and post clear-cutting Shenghua Gao a, Jiquan Chen b, Yuxi Tang c, Jing Xie d, Rui Zhang e, Jie Tang c, Xudong Zhang a,*a State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, Chinab Center for Global Change and Earth Observations (CGCEO) and Department of Geography, Michigan State University, East Lansing, MI 48823, USAc Hunan Academy of Forestry, Chang...
發(fā)布時間:
2015
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瀏覽次數(shù)：43
HYPERSPECTRAL REMOTE SENSING FOR DETECTION OF RHIZOCTONIA CROWN AND ROOT ROT IN SUGARBEETGregory J. Reynolds1, Carol E. Windels2, Ian V. MacRae3, and Soizik Laguette4Graduate Student, Professor, Associate Professor, and Assistant Professor, respectively1University of Minnesota, Department of Plant Pathology, St. Paul2University of Minnesota, Department of Plant Pathology and Northwest Research & Outreach Center, Crookston3University of Minnesota, Department of Entomology and Northwest Research & Outreach Center, Crookston4University of North Dakota, Department of Earth System Science a...
發(fā)布時間:
2015
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瀏覽次數(shù)：47
DETECTION OF SUGARCANE AFRICAN STALK BORER ELDANASACCHARINA WALKER (LEPIDOPTERA: PYRALIDAE) USINGHYPERSPECTRAL REMOTE SENSING (SPECTRORADIOMETRY)應用ASD地物光譜儀檢測蛀蟲ELDANA SACCHARINA（鱗翅目：螟蛾科）對非洲甘蔗莖部的危害程度MOKHELE TA1, AHMED F1 and CONLONG DE2,31School of Environmental Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa2South African Sugarcane Research Institute, Private Bag X02, Mount Edgecombe 4300, South Africa3School of Biological and Conservation Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209, South AfricaAbstractThe South African sugar industry i...
發(fā)布時間:
2015
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瀏覽次數(shù)：64
LGR氧化亞氮同位素分析儀測量水中硝酸鹽成功案例：Analytical Chemistry 文章：Combining Denitrifying Bacteria and Laser Spectroscopy for Isotopic Analyses (δ15N, δ18O) of Dissolved Nitrate通過反硝化細菌和激光同位素分析儀測定溶解硝酸鹽中的δ15N和δ18ODavid X. Soto *?, Geoff Koehler ?, and Keith A. Hobson ?? Environment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada, S7N 3H5AbstractWe present a novel approach for nitrogen (δ15N) and oxygen (δ18O) isotopic analysis of nitrate in water based on the isotopic analysis of N2O produced from the conversion of NO3– by cultured denitrifying bacteria and off-axis integrated cavity output ...
發(fā)布時間:
2015
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07
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21
瀏覽次數(shù)：59
Nature 發(fā)表文章：In-situ unsaturated zone stable water isotope (2H and 18O) measurements in semi-arid environments using tunable o-axis integrated cavity output spectroscopy科學家應用LGR液態(tài)水同位素分析儀在半干旱環(huán)境下原位測量不飽和帶水中2H和18O同位素比值M. Gaj1,2, M. Beyer1, P. Koeniger1, H. Wanke3, J. Hamutoko3, and T. Himmelsbach11 Federal Institue for Geosciences and Natural Resources (BGR), Stilleweg 2, Hannover, Germany2 Chair of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Fahnenbergplatz, 79098 Freiburg, Germany3Universit...
發(fā)布時間:
2015
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07
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瀏覽次數(shù)：44
Inter- and intraindividual correlations of background abundances of 2H, 18O and 17O in human urine and implications for DLW measurements科學家應用LGR同位素分析儀測定人體尿液中的2H,18O和17O豐度間的相互作用對DLW測量方法的影響E S F Berman, E L Melanson, T Swibas, S P Snaith and J R SpeakmanBackground/Objectives:The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This experiment examined the behavior of natural background isotope abundance fluctuations within and between individuals over time to assess possible methods of accounting for varia...
發(fā)布時間:
2015
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07
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01
瀏覽次數(shù)：35
科學家應用Campbell CPEC200閉路渦動相關(guān)系統(tǒng)測量森林碳封存Canada: Forest Carbon SequestrationCampbell Scientific CPEC200 monitors eddy-covariance fluxes in British Columbia forest 文章下載地址：79canada-vancouver-island--CPEC200.pdf4da92e4cbee3e5c7273825cef11d6136.pdf (2.84 MB)
發(fā)布時間:
2015
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05
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19
瀏覽次數(shù)：49
Field Spectroscopy in the VNIR-SWIR Region to Discriminate between Mediterranean Native Plants and Exotic-Invasive Shrubs Based on Leaf Tannin Content 基于可見光近紅外（VNIR）和短波紅外（SWIR），科學家應用ASD地物光譜儀測量葉片單寧的含量，從而區(qū)分地中海附近海岸的本土植物和外來入侵灌木。Authors: Jan Rudolf Karl Lehmann, André Große-Stoltenberg, Meike Römer and Jens OldelandAbstract: The invasive shrub, Acacia longifolia, native to southeastern Australia, has a negative impact on vegetation and ecosystem functioning in Portuguese dune ecosystems. In order to spectrally discriminate A. longifoliafrom oth...
發(fā)布時間:
2015
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05
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12
瀏覽次數(shù)：123
科學家應用LGR氨氣分析儀快速原位機載測量空氣中氨氣的含量Fast in situ Airborne Measurement of AmmoniaUsing a Mid-Infrared Off-Axis ICOS Spectrometer科學家應用LGR氨氣分析儀快速原位機載測量空氣中氨氣的含量，這可以幫助我們更好的分析大氣的成分和氣溶膠的組成，具有深遠的意義。J. Brian Leen,?,* Xiao-Ying Yu,?,* Manish Gupta,? Douglas S. Baer,? John M. Hubbe,? Celine D.Kluzek, ? Jason M. Tomlinson,? and Mike R. Hubbell II??Los Gatos Research Inc., 67 E. Evelyn Ave, Suite 3, Mountain View, CA 94041?Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352ABSTRACT:A new ammonia (NH3) analyzer was developed based on off-axis integrated cavity output spectroscopy...
發(fā)布時間:
2015
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03
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17
瀏覽次數(shù)：47
The relative role of soil type and tree cover on water storageand transmission in northern headwater catchments科學家應用LGR液態(tài)水同位素分析儀在北部水源集中區(qū)域監(jiān)測土壤類型與植被覆蓋類型對水的存儲和傳輸?shù)挠绊慗osie Geris,1* Doerthe Tetzlaff,1 Jeffrey McDonnell1,2 and Chris Soulsby11 Northern Rivers Institute, School of Geosciences, University of Aberdeen, Scotland, UK2 Global Institute for Water Security, National Hydrology Research Centre, University of Saskatchewan, Saskatoon, Canada Abstract:Soil water storage and stable isotopes dynamics were investigated in dominant soil–vegetation assemblages of a wet nor...
發(fā)布時間:
2015
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02
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26
瀏覽次數(shù)：47