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36篇 您的检索式:作者名="James Shepherd"
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1Airborne laser scanning of natural forests in New Zealand reveals the influences of wind on forest carbon显示文摘Background: Forests are a key component of the global carbon cycle, and research is needed into the effects of human-driven and natural processes on their carbon pools. Airborne laser scanning(ALS) produces detailed 3D maps of forest canopy structure from which aboveground carbon density can be estimated. Working with a ALS dataset collected over the 8049-km^2 Wellington Region of New Zealand we create maps of indigenous forest carbon and evaluate the influence of wind by examining how carbon storage varies with aspect. Storms flowing from the west are a common cause of disturbance in this region, and we hypothesised that west-facing forests exposed to these winds would be shorter than those in sheltered east-facing sites.Methods: The aboveground carbon density of 31 forest inventory plots located within the ALS survey region were used to develop estimation models relating carbon density to ALS information. Power-law models using rasters of top-of-the-canopy height were compared with models using tree-level information extracted from the ALS dataset. A forest carbon map with spatial resolution of 25 m was generated from ALS maps of forest height and the estimation models. The map was used to evaluate the influences of wind on forests.Results: Power-law models were slightly less accurate than tree-centric models(RMSE 35% vs 32%) but were selected for map generation for computational efficiency. The carbon map comprised 4.5 million natural forest pixels within which canopy height had been measured by ALS, providing an unprecedented dataset with which to examine drivers of carbon density. Forests facing in the direction of westerly storms stored less carbon, as hypothesised. They had much greater above-ground carbon density for a given height than any of 14 tropical forests previously analysed by the same approach, and had exceptionally high basal areas for their height. We speculate that strong winds have kept forests short without impeding basal area growth.Conclusion: Simple estimation models based on top-of-the canopy height are almost as accurate as state-of-the-art tree-centric approaches, which require more computing power. High-resolution carbon maps produced by ALS provide powerful datasets for evaluating the environmental drivers of forest structure, such as wind.David A. Coomes Daniel Safka James Shepherd Michele Dalponte Robert Holdaway 2018Forest Ecosystems2018,5,2:3
2Statins and risk of incident diabetes: a collaborative meta-analysis of randomised statin trials显示文摘Naveed Sattar David Preiss Heather M Murray Paul Welsh Brendan M Buckley Anton JM de Craen Sreenivasa Rao Kondapally Seshasai John J McMurray Dilys J Freeman J Wouter Jukema Peter W Macfarlane Chris J Packard David J Stott Rudi G Westendorp James Shepherd 2010The Lancet2010,,9716:2
3Renal safety of intensive cholesterol-lowering treatment with rosuvastatin: A retrospective analysis of renal adverse events among 40,600 participants in the rosuvastatin clinical development program显示文摘Evan A. Stein Donald G. Vidt James Shepherd Valerie A. Cain Deborah Anzalone Michael D. Cressman 2012Atherosclerosis2012,,2:2
4Relevance of the detection of intestinal metaplasia in non-dysplastic columnar-lined oesophagus显示文摘Piers A. C. Gatenby James R. Ramus Christine P. J. Caygill Neil A. Shepherd Anthony Watson 2008Scandinavian Journal of Gastroenterology2008,,5:2
5Statins and risk of incident diabetes: a collaborative meta-analysis of randomised statin trials显示文摘Naveed Sattar David Preiss Heather M Murray Paul Welsh Brendan M Buckley Anton JM de Craen Sreenivasa Rao Kondapally Seshasai John J McMurray Dilys J Freeman J Wouter Jukema Peter W Macfarlane Chris J Packard David J Stott Rudi G Westendorp James Shepherd 2010The Lancet2010,,9716:2
6Packard Sialic acid - containing components of lipoproteins influence lipoprotein - protioglycan interactions 显示文摘 Vian Anber James Shepherd 1999Atherosclerosis1999,145,:1
7New Techniques for Suppression of Automobile Ignition Noise 显示文摘Richard A Shepherd James C Gaddie Donald L Nielson 1976IEEE Transactions on Vehicular Technology1976,25,1:1
8The first data from the Orion laser; measurements of the spectrum of hot, dense aluminium显示文摘D.J. Hoarty P. Allan S.F. James C.R.D. Brown L.M.R. Hobbs M.P. Hill J.W.O. Harris J. Morton M.G. Brookes R. Shepherd J. Dunn H. Chen E. Von Marley P. Beiersdorfer H.K. Chung R.W. Lee G. Brown J. Emig 2013High Energy Density Physics2013,,4:1
9Prevention of coronary heart disease with pravastatin in men with hypercholesterolemia显示文摘James Shepherd Stuart M Cobbc Ian Ford 2004N EngI J Med2004,5,3:1
10Intensive Lipid Lowering With Atorvastatin in Patients With Coronary Heart Disease and Chronic Kidney Disease显示文摘James Shepherd John J.P. Kastelein Vera Bittner Prakash Deedwania Andrei Breazna Stephen Dobson Daniel J. Wilson Andrea Zuckerman Nanette K. Wenger 2008Journal of the American College of Cardiology2008,,15:1
11Effect of Pravastatin on Rate of Kidney Function Loss in People With or at Risk for Coronary Disease显示文摘Marcello Tonelli Chris Isles Timothy Craven Andrew Tonkin Marc A. Pfeffer James Shepherd Frank M. Sacks Curt Furberg Stuart M. Cobbe John Simes Malcolm West Chris Packard Gary C. Curhan 2005Circulation2005,,2:1
12Statins and risk of incident diabetes: a collaborative meta-analysis of randomised statin trials显示文摘Naveed Sattar David Preiss Heather M Murray Paul Welsh Brendan M Buckley Anton JM de Craen Sreenivasa Rao Kondapally Seshasai John J McMurray Dilys J Freeman J Wouter Jukema Peter W Macfarlane Chris J Packard David J Stott Rudi G Westendorp James Shepherd 20102010 (9716)2010,,9716:1
13Gastro-oesophageal reflux symptoms are related to the presence and severity of obstructive sleep apnoea显示文摘Shepherd KL James AL Musk AW 2011J Sleep Res2011,20,12:1
14Prediction of Cardiovascular Events in Statin-Treated Stable Coronary Patients by Lipid and Nonlipid Biomarkers显示文摘Benoit J. Arsenault Philip Barter David A. DeMicco Weihang Bao Gregory M. Preston John C. LaRosa Scott M. Grundy Prakash Deedwania Heiner Greten Nanette K. Wenger James Shepherd David D. Waters John J.P. Kastelein 2011Journal of the American College of Cardiology2011,,1:1
15Renal safety of intensive cholesterol-lowering treatment with rosuvastatin: A retrospective analysis of renal adverse events among 40,600 participants in the rosuvastatin clinical development program显示文摘Evan A. Stein Donald G. Vidt James Shepherd Valerie A. Cain Deborah Anzalone Michael D. Cressman 2012Atherosclerosis2012,,2:1
16Safety of rosuvastatin显示文摘James Shepherd Donald B. Hunninghake Evan A. Stein John J.P. Kastelein Susan Harris John Pears Howard G. Hutchinson 2004The American Journal of Cardiology2004,,7:1
17Intensive Lipid Lowering With Atorvastatin in Patients With Coronary Heart Disease and Chronic Kidney Disease显示文摘James Shepherd John J.P. Kastelein Vera Bittner Prakash Deedwania Andrei Breazna Stephen Dobson Daniel J. Wilson Andrea Zuckerman Nanette K. Wenger 2008Journal of the American College of Cardiology2008,,15:1
18Cochlear implants and brain plasticity显示文摘James B. Fallon Dexter R.F. Irvine Robert K. Shepherd 2007Hearing Research2007,,1:1
19Gastro-oesophag- eal reflux symptoms are related to the presence and severity of obstructive sleep apnoea 显示文摘Shepherd KL James AL Musk AW 2011J Sleep Res2011,20,:1
20Pure stress leakage symptomatology:is it safe to discount detrusor instability?显示文摘James M Jackson S Shepherd A 1999Br J Obstet Gynaecol1999,106,12:1
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