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| 1 | Geospatial Mapping of Soil Nitrate-Nitrogen Distribution Under a Mixed-Land Use System显示文摘Mapping the spatial distribution of soil nitrate-nitrogen (NO3-N) is important to guide nitrogen application as well as to assess environmental risk of NO3-N leaching into the groundwater. We employed univariate and hybrid geostatistical methods to map the spatial distribution of soil NO3-N across a landscape in northeast Florida. Soil samples were collected from four depth increments (0-30, 30-60, 60-120 and 120-180 cm) from 147 sampling locations identified using a stratified random and nested sampling design based on soil, land use and elevation strata. Soil NO3-N distributions in the top two layers were spatially autocorrelated and mapped using lognormal kriging. Environmental correlation models for NO3-N prediction were derived using linear and non-linear regression methods, and employed to develop NO3-N trend maps. Land use and its related variables derived from satellite imagery were identified as important variables to predict NO3-N using environmental correlation models. While lognormal kriging produced smoothly varying maps, trend maps derived from environmental correlation models generated spatially heterogeneous maps. Trend maps were combined with ordinary kriging predictions of trend model residuals to develop regression kriging prediction maps, which gave the best NO3-N predictions. As land use and remotely sensed data are readily available and have much finer spatial resolution compared to field sampled soils, our findings suggested the e?cacy of environmental correlation models based on land use and remotely sensed data for landscape scale mapping of soil NO3-N. The methodologies implemented are transferable for mapping of soil NO3-N in other landscapes. | S. LAMSAL C. M. BLISS D. A. GRAETZ | 2009 | Pedosphere2009，19，4： | 6 |
| 2 | Health damages from air pollution in China显示文摘 | Kira Matus Kyung-Min Nam Noelle E. Selin Lok N. Lamsal John M. Reilly Sergey Paltsev | 2011 | Global Environmental Change2011，，1： | 2 |
| 3 | Spatial variation and prediction of forest biomass in a heterogeneous landscape显示文摘Large areas assessments of forest biomass distribution are a challenge in heterogeneous landscapes, where variations in tree growth and species composition occur over short distances. In this study, we use statistical and geospatial modeling on densely sampled forest biomass data to analyze the relative importance of ecological and physiographic variables as determinants of spatial variation of forest biomass in the environmentally heterogeneous region of the Big Sur, California. We estimated biomass in 280 forest plots (one plot per 2.85 km2) and measured an array of ecological (vegetation community type, distance to edge, amount of surrounding non-forest vegetation, soil properties, fire history) and physiographic drivers (elevation, potential soil moisture and solar radiation, proximity to the coast) of tree growth at each plot location. Our geostatistical analyses revealed that biomass distribution is spatially structured and autocorrelated up to 3.1 km. Regression tree (RT) models showed that both physiographic and ecological factors influenced biomass distribution. Across randomly selected sample densities (sample size 112 to 280), ecological effects of vegetation community type and distance to forest edge, and physiographic effects of elevation, potential soil moisture and solar radiation were the most consistent predictors of biomass. Topographic moisture index and potential solar radiation had a positive effect on biomass, indicating the importance of topographically-mediated energy and moisture on plant growth and biomass accumulation. RT model explained 35% of the variation in biomass and spatially autocorrelated variation were retained in regession residuals. Regression kriging model, developed from RT combined with kriging of regression residuals, was used to map biomass across the Big Sur. This study demonstrates how statistical and geospatial modeling can be used to discriminate the relative importance of physiographic and ecologic effects on forest biomass and develop spatial models to predict and map biomass distribution across a heterogeneous landscape. | S. Lamsal D. M. Rizzo R. K. Meentemeyer | 2012 | Journal of Forestry Research2012，23，1： | 2 |
| 4 | Some physicochemical and functional properties of alfalfa soluble leaf proteins显示文摘 | B.P. Lamsal R.G. Koegel S. Gunasekaran | 2006 | LWT - Food Science and Technology2006，，9： | 2 |
| 5 | Digital Terrain Modelling Using Corona and ALOS PRISM Data to Investigate the Distal Part of Imja Glacier,Khumbu Himal,Nepal显示文摘This study used Corona KH-4A and Advanced Land Observing Satellite (ALOS) PRISM images to generate digital terrain models (DTMs) of the distal part of Imja Glacier,where a few supraglacial ponds (~0.07 km 2) expanded into the large Imja Glacier Lake (Imja Tsho,~0.91 km 2) between 1964 and 2006.DTMs and subsequently derived topographical maps with contour intervals of 1 m were created from the high-resolution images (Corona in 1964 and ALOS in 2006) in the Leica Photogrammetric Suite (LPS) platform.The DTMs and topographic maps provided excellent representation of the elevation and micro-topography of the glacier surface,such as its supra-glacial ponds/lake,surface depressions,and moraine ridges,with an error of about +/-4 m (maximum).The DTMs produced from the Corona and ALOS PRISM images are suitable for use in studies of the surface change of glaciers.The topographical maps produced from the Corona data (1964) showed that part of the dead ice in the down-glacier area was even higher than the top of the lateral moraine ridges,while the glacier surface in the up-glacier area was noticeably lower than the moraine crests.This suggests more extensive melting of glacier ice in the up-glacier area before 1964.The average lowering of the glacier surface from 1964 to 2006 was 16.9 m for the dead-ice area west of the lake and 47.4 m for the glacier surface east of the lake;between 1964 and 2002,the lake surface lowered by 82.3 m.These figures represent average lowering rates of 0.4,1.1,and 2.2 m/year for the respective areas. | LAMSAL Damodar SAWAGAKI Takanobu WATANABE Teiji | 2011 | Journal of Mountain Science2011，8，3： | 2 |
| 6 | Ozone column classified climatology of ozone and temperature profiles based on ozonesonde and satellite data显示文摘 | Lamsal L N Weber M Telhnann S | 2004 | Journal of Geophysical Research2004，109，20： | 1 |
| 7 | Recovery and Characterization of α-Zein from Corn Fermentation Coproducts显示文摘 | Paraman I Lamsal B P | | 0，，07： | 1 |
| 8 | Diagnostic utility of adenosine deaminase(ADA) activity in pleural fluid and serum of tuberculotus and non-tuberculous respiratory disease patients显示文摘 | Lamsal M Gautam N Bhatta N | | 0，，： | 1 |
| 9 | Oxidative stress and nutritional status in chronic obstructive pulmonary disease显示文摘 | Dhakal N Lamsal M Baral N | 2015 | J Clin Diagn Res2015，9，2： | 1 |
| 10 | Diagnostic utility of adenosine deaminase (ADA) activity in pleural fluid and serum of tuberculous and non-tubercilous respiratory disease patients显示文摘 | Lamsal M Guatam N Bhatta N | 2007 | Southeast Asian J Trop Med Public Health2007，38，2： | 1 |
| 11 | Effect of an enzyme preparation on wheat flour and dough color,mixing,and test baking显示文摘 | LAMSAL BP FAUBION JM | | 0，，10： | 1 |
| 12 | Diagnostic utility of adenosine deaminase (ADA) activity in pleural fluid and serum of tuberculous and non-tubercilous respiratory disease patients显示文摘 | Lamsal M Guatam N Bhatta N | 2007 | Southeast Asian J Trop med public Health2007，38，2： | 1 |
| 13 | Separating oil from aqueous extraction fractions of soybean 显示文摘 | LAMSAL B P JOHNSON L A | 2007 | J Am Oil Chem Soc2007，84，： | 1 |
| 14 | Model for assessing impact of salinity on soil water availability and crop yield显示文摘 | Lamsal K Guna N Paudyal Saeed M | 1999 | Agricultural Water Management1999，41，： | 1 |
| 15 | Flaking and extrusion as mechanical treatments for enzyme-assisted aqueous extraction of oil from soybeans显示文摘 | Lamsal B P Murphy P A Johnson L A | | 0，，11： | 1 |
| 16 | Separating oil from aqueous extrac- tion fractions of soybean 显示文摘 | Lamsal BP Johnson LA | 2007 | Journal of the American oil Chemist'' s Society2007，84，8： | 1 |
| 17 | De Ritis ratio as diagnostic marker of alcoholic liver disease 显示文摘 | Majhi S Baral N Lamsal M | 2006 | NepalMed Coil J2006，8，1： | 1 |
| 18 | Zein extraction from corn, corn products, and coproducts and modifications for various applications: a review显示文摘 | ANDERSON T J LAMSAL B P | 2011 | Cereal Chem2011，88，2： | 1 |
| 19 | Rheological properties of soy protein hydrolysates obtained from limited enzymatic hydrolysis 显示文摘 | Lamsal B P Jung S Johnson L A | 2007 | LWT-Food Science and Technology2007，40，7： | 1 |
| 20 | Some physicochemical and functional properties of alfalfa soluble leaf proteins显示文摘 | Lamsal B P Koegel R G Gunasekaran S | 2007 | LWT - Food Sci Techno12007，40，9： | 1 |
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