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| 1 | Estimating above-ground biomass by fusion of LiDAR and multispectral data in subtropical woody plant communities in topographically complex terrain in North-eastern Australia显示文摘We investigated a strategy to improve predicting capacity of plot-scale above-ground biomass(AGB) by fusion of LiDAR and Landsat5 TM derived biophysical variables for subtropical rainforest and eucalypts dominated forest in topographically complex landscapes in North-eastern Australia. Investigation was carried out in two study areas separately and in combination. From each plot of both study areas, LiDAR derived structural parameters of vegetation and reflectance of all Landsat bands, vegetation indices were employed. The regression analysis was carried out separately for LiDAR and Landsat derived variables individually and in combination. Strong relationships were found with LiDAR alone for eucalypts dominated forest and combined sites compared to the accuracy of AGB estimates by Landsat data. Fusing LiDAR with Landsat5 TM derived variables increased overall performance for the eucalypt forest and combined sites data by describing extra variation(3% for eucalypt forest and 2% combined sites) of field estimated plot-scale above-ground biomass. In contrast, separate LiDAR and imagery data, andfusion of LiDAR and Landsat data performed poorly across structurally complex closed canopy subtropical rainforest. These findings reinforced that obtaining accurate estimates of above ground biomass using remotely sensed data is a function of the complexity of horizontal and vertical structural diversity of vegetation. | Sisira Ediriweera Sumith Pathirana Tim Danaher Doland Nichols | 2014 | Journal of Forestry Research2014，25，4： | 2 |
| 2 | Does the way physicians are paid influence the way they practice? The case of Canadian family physicians' work activity显示文摘 | Sisira Samma Rose Anne Devlin Bachir Belhadji Amardeep Thind | | 0，，98： | 1 |
| 3 | Exertional heat stroke in a young military trainee:is it preventable?显示文摘Background: Heat stroke is a life-threatening condition with exertional heat stroke occurring frequently among soldiers and athletes. Because of its common occurrence, many military trainees practice preventive measures prior to any activity requiring severe exertion. Although it is said to be common in practice, different presentations of heat stroke are scarcely described in literature.Case Presentation: We describe a case of an exertional heat stroke in a 23-year-old male Sinhalese soldier who developed early changes of renal failure, liver failure and rhabdomyolysis. The patient initially presented with convulsions, delirium and loss of consciousness to an outside health care facility before being transferred to our institution.Conclusion: It is clear that heat stroke does occur in military trainees while preventive strategies are being practiced. It is important for those who provide healthcare to soldiers to provide proper advice on how to identify impending heat stroke prior to any exercises resulting in severe physical exertion. Further, treating physicians should educate all military trainees about preventive strategies. | Buddhika T.B.Wijerathne Senaka D.Pilapitiya Vadivel Vijitharan Mohammed M.F.Farah Yashodhara V.M.Wimalasooriya Sisira H Siribaddana | 2016 | Journal of Medical Colleges of PLA(China)2016，31，2： | 1 |
| 4 | China, India and the Commodity Boom: Economic and Environmental Implications for Low-income Countries 显示文摘 | Coxhead Ian and Jayasuriya Sisira | 2010 | The World Economy2010，33，4： | 1 |
| 5 | Environmen- tal exposures and their genetic or environmental contribution to depression and fatigue: a twin study in Sri Lanka 显示文摘 | HARRIET AB SISIRA H SIRIBADDANA | 2010 | BMC Psy- chiatry2010，10，： | 1 |
| 6 | Financial Markets and Economic Performances: Empirical Evidence from Five Industrialized Economies显示文摘 | Sisira R N Colombage | 2009 | Research in International Business and Finance2009，23，3： | 1 |
| 7 | Space‑Time Clustering with the Space‑Time Permutation Model in SaTScan™ Applied to Building Permit Data Following the 2011 Joplin, Missouri Tornado显示文摘Community recovery from a major natural hazard-related disaster can be a long process, and rebuilding likely does not occur uniformly across space and time. Spatial and temporal clustering may be evident in certain data types that can be used to frame the progress of recovery following a disaster. Publically available building permit data from the city of Joplin, Missouri, were gathered for four permit types, including residential, commercial, roof repair, and demolition. The data were used to(1) compare the observed versus expected frequency(chi-square) of permit issuance before and after the EF5 2011 tornado;(2), determine if significant space-time clusters of permits existed using the SaTScan^(TM) cluster analysis program(version 9.7);and(3) fit any emergent cluster data to the widely-cited Kates 10-year recovery model. All permit types showed significant increases in issuance for at least 5 years following the event,and one(residential) showed significance for nine of the 10years. The cluster analysis revealed a total of 16 significant clusters across the 2011 damage area. The results of fitting the significant cluster data to the Kates model revealed that those data closely followed the model, with some variation in the residential permit data path. | Mitchel Stimers Sisira Lenagala Brandon Haddock Bimal Kanti Paul Rhett Mohler | 2022 | International Journal of Disaster Risk Science2022，13，6： | 0 |
| 8 | Old-growth mixed dipterocarp forests show variable losses and gains in aboveground biomass and standing carbon over forty years显示文摘Background:No studies have documented long-term trends in aboveground biomass(AGB)for mixed-dipterocarp forests(MDF),the dominant rain forest type in tropical wet equatorial Asia.In our study,we sought to document such trends over forty years across three sites representing lowland to lower montane elevations.Methods:To do this,we established fifty 100 m×25 m plots in 1978 across three sites sampled along an elevation gradient,identified as mature old-growth forest.We measured trees for diameter at breast height that we identified to species and tagged.We took wood samples to calculate species wood-specific gravity.We re-measured plots in 1998 and again in 2018.Results:We show standing AGB for all sites combined to be 517.52 Mg·ha^(-1)in 1978,but this declined by 17%over 40 years to 430.11 Mg·ha^(-1).No differences exist among sites in AGB primarily because of considerable within site variation;but interactions of time with site show declines across sites were not uniform,one remained about the same.Relatively few species represented a high proportion of the AGB with the top five species comprising between 34%and 65%,depending upon site and year sampled.One species,Mesua nagassarium,represented a disproportionately large amount of AGB and decline over time,particularly at the low elevation site.Conclusions:Our results are directly relevant to estimating AGB and standing carbon sequestered in MDF.Our study is the first to demonstrate varying but overall,declining trends in amounts of AGB among forests making predictions of biomass and standing carbon in MDF difficult over wide regions. | Sisira Ediriweera Champika Bandara Tithira Lakkana Shanika Jayasinghe David Woodbury Arun Dayanandan B.M.P.Singhakumara Xiangcheng Mi I.A.U.N.Gunatilleke C.V.S.Gunatilleke Mark SAshton | 2024 | Forest Ecosystems2024，11，1： | 0 |
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