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Re-evaluating the occupation history of Koh Ker, Cambodia, during the Angkor period: A palaeo-ecological approach

Tegan Hall, Dan Penny, Rebecca Hamilton, Siân E. Halcrow
2018 PLoS ONE  
In this article, we reconstruct the settlement history of Koh Ker, using palaeoecological and geoarchaeological techniques, and show that human activity and land use persisted in the city for several centuries  ...  These results highlight the utility of multi-proxy environmental reconstructions of Khmer urban settlements for re-evaluating prevailing assumptions regarding the use and occupation of Angkor-period cities  ...  Acknowledgments Our thanks extend to the APSARA National Authority, The Cambodian Ministry of Culture, The Hungarian Indochina Company (HUNINCO), So Malay and Damian Evans for their assistance with fieldwork  ... 
doi:10.1371/journal.pone.0203962 pmid:30303963 pmcid:PMC6179204 fatcat:37h5qpb23bc6pmc4mtk47gvmya

CLIMATIC/EDAPHIC CONTROLS ON SOIL CARBON/NITROGEN RESPONSE TO SHRUB ENCROACHMENT IN DESERT GRASSLAND

C. Winston Wheeler, Steven R. Archer, Gregory P. Asner, Chad R. McMurtry
2007 Ecological Applications  
The proliferation of woody plants in grasslands over the past 100þ years can alter carbon, nitrogen, and water cycles and influence land surface-atmosphere interactions.  ...  On sandy loam complexes of mid-Holocene origin, mean SOC and TN of soils in the grassland matrix increased ;68% and ;45%, respectively, with increasing elevation.  ...  ACKNOWLEDGMENTS This study was supported by a NASA Land Use Land Cover  ... 
doi:10.1890/06-1580.1 pmid:17974331 fatcat:xlnske32ezfojocpcmt6vztnsi

Soil erosion risk assessment of the Keiskamma catchment, South Africa using GIS and remote sensing

Paidamwoyo Mhangara, Vincent Kakembo, Kyoung Jae Lim
2011 Environmental Earth Sciences  
The Keiskamma catchment is predisposed to excessive rates of soil loss due to high soil erodibility, steep slopes, poor conservation practices and low vegetation cover.  ...  The effect of rainfall was noted as two pronged, higher rainfall amounts received in the escarpment promote vegetation growth and vigour in the Amatole mountain range which in turn positively provides  ...  These soils are predominately sandy loams and sandy clay loams.  ... 
doi:10.1007/s12665-011-1190-x fatcat:ldy2olrjxjaqrnowkdh7e2mjzm

Agricultural Suitability of a Sandy Soil in an Agrarian Reform Settlement

Ronaldo de Oliveira Custódio Filho, Vladia Correchel, Felipe Corrêa Veloso dos Santos, Idelfonso Colares de Freitas, Anne Louise de Melo Dores
2021 International Journal of Advanced Engineering Research and Science  
The soil classification is the systematic arrangement of soils into groups or categories based on attributes and diagnostic horizons.  ...  as providing its coverage and retaining water are indicated, such as: level planting, cords of permanent vegetation, addition of organic matter, dead cover and direct planting.  ...  Aptitude Assessment System is based on the qualities of the land, its type of use and the management levels considered. Guides proper land use, avoiding sub-or overuse of the soil.  ... 
doi:10.22161/ijaers.83.37 fatcat:4pwbx6se55aczdar5xntemjaty

Rapid estimation of recharge potential in ephemeral-stream channels using electromagnetic methods, and measurements of channel and vegetation characteristics

James B. Callegary, James M. Leenhouts, Nicholas V. Paretti, Christopher A. Jones
2007 Journal of Hydrology  
Because of the comparatively large spatial extent of measurement transects and variety of data types collected, RCP estimates can give a more complete picture of the major factors affecting recharge at  ...  a site than is possible through point or boreholeaveraged estimates of hydraulic permeability alone.  ...  Acknowledgements The authors would like to thank Mike Milczarek of GeoSystems Analysis, Inc. for helpful conversations and access to their data sets.  ... 
doi:10.1016/j.jhydrol.2007.06.028 fatcat:sfr7v2sdj5chpmcn7amkgnjagi

Trees in Grasslands [chapter]

Steve Archer, Thomas W. Boutton, K.A. Hibbard
2001 Global Biogeochemical Cycles in the Climate System  
The present-day herbaceous vegetation is dominated by a low cover of ephemeral dicots and short-statured, weakly perennial grasses.  ...  impacts on biogeochemistry and climate that will influence future land use options in arid and semiarid ecosystems worldwide.  ... 
doi:10.1016/b978-012631260-7/50011-x fatcat:ih7zhbbb7fagbctl2tbq5sanz4

Impact of plant roots on the resistance of soils to erosion by water: a review

G. Gyssels, J. Poesen, E. Bochet, Y. Li
2005 Progress in physical geography  
Based on an analysis of available data it can be concluded that for splash and interrill erosion vegetation cover is the most important vegetation parameter, whereas for rill and ephemeral gully erosion  ...  Moreover, all the studies on vegetation cover effects attribute soil loss reduction to the above-ground biomass only, whereas in reality this reduction results from the combined effects of roots and canopy  ...  When studying incisive erosion processes such as rill and (ephemeral) gully erosion, however, one should also consider the influence of the plant roots, because their effect on the possible reduction of  ... 
doi:10.1191/0309133305pp443ra fatcat:i3qty3ijffbqxblfhvvyh43eq4

Assessing controls on diffuse groundwater recharge using unsaturated flow modeling

K. E. Keese, B. R. Scanlon, R. C. Reedy
2005 Water Resources Research  
1] Understanding climate, vegetation, and soil controls on recharge is essential for estimating potential impacts of climate variability and land use/land cover change on recharge.  ...  Recharge controls were evaluated by simulating drainage in 5-m-thick profiles using a one-dimensional (1-D) unsaturated flow code (UNSAT-H), climate data, and vegetation and soil coverages from online  ...  Petheram et al. [2002] evaluated impacts of land use on recharge by reviewing previous recharge studies in Australia and correlated recharge to precipitation in areas of annual vegetation and sandy soils  ... 
doi:10.1029/2004wr003841 fatcat:6m3as2w6kvgx3dturfsja7bud4

Dynamic patch mosaics and channel movement in an unconfined river valley of the Olympic Mountains

JOSHUA J. LATTERELL, J. SCOTT BECHTOLD, THOMAS C. O'KEEFE, ROBERT PELT, ROBERT J. NAIMAN
2006 Freshwater Biology  
In the Queets River, the structure, composition, and dynamics of the patchy riparian forest depends on the interplay between channel movements and biophysical feedbacks between large wood, living vegetation  ...  River valleys resemble dynamic mosaics, composed of patches which are natural, transient features of the land surface produced by the joint action of a river and successional processes over years to centuries  ...  Hoffman of the US Department of the Interior National Park Service (Olympic National Park) for support, advice and access to collections of historic aerial photographs.  ... 
doi:10.1111/j.1365-2427.2006.01513.x fatcat:lrkebezxnfehzcbkadlje6kdli

A Potential Conflict between Preserving Regional Plant Diversity and Biotic Resistance to an Invasive Grass,Microstegium vimineum

J. Stephen Brewer
2010 Natural areas journal  
Using path analysis, I examined direct and indirect effects of various abiotic factors (i.e., flooding, treefall gaps, soil texture, proximity to roads, and stand age) on plant species richness, floristic  ...  quality (a proxy for regional plant diversity), and the abundance of a non-native invasive grass, Microstegium vimineum, in 117 3.14-m2 plots within four stands of mesic floodplain forests in northern  ...  Path Model Evaluation and Hypothesis Testing Hypothesis 1 (Table 1) spring and reaches maximum production in the fall, I assumed that the inclusion of spring ephemerals and winter annuals in the calculation  ... 
doi:10.3375/043.030.0304 fatcat:p2ie3y3nhzc23buowntraeqh4a

Re-evaluating the resource potential of lomas fog oasis environments for Preceramic hunter–gatherers under past ENSO modes on the south coast of Peru

David Beresford-Jones, Alexander G. Pullen, Oliver Q. Whaley, Justin Moat, George Chauca, Lauren Cadwallader, Susana Arce, Alfonso Orellana, Carmela Alarcón, Manuel Gorriti, Patricia K. Maita, Fraser Sturt (+4 others)
2015 Quaternary Science Reviews  
and herbaceous perennial lomas ('WHPL') and Tillandsia dominated vegetation (ii) Normal fog season (occurring annually or biennially, JulyeDecember) e occult precipitation stimulating plant growth and  ...  , 1980) : the vestiges of multiple, short-term forays in winter to hunt game and gather lomas specific resources, particularly plant geophytes and land snails.  ... 
doi:10.1016/j.quascirev.2015.10.025 fatcat:twjzt2itbfcb3aoz5f2lbh3g2u

A process-based model of conifer forest structure and function with special emphasis on leaf lifespan

Colin P. Osborne, David J. Beerling
2002 Global Biogeochemical Cycles  
Emphasis is placed on leaf lifespan because this trait can be determined from the anatomical characteristics of fossil conifer woods and influences a range of ecosystem processes.  ...  It will be of use in future research investigating controls on the contrasting distribution of ancient evergreen and deciduous forests between hemispheres, and their differential feedbacks on polar climate  ...  Betts, and V. Brovkin for their comments on the manuscript. We appreciate the assistance, helpful discussion, and advice provided by D.S. Ellsworth, S.T.  ... 
doi:10.1029/2001gb001467 fatcat:tki7x23lovevjjwdqsnhehonim

Assessment of Soil Erosion Using the RUSLE Model for the Epworth District of the Harare Metropolitan Province, Zimbabwe

Andrew K. Marondedze, Brigitta Schütt
2020 Sustainability  
This considers land use, soil, climate and topography as input parameters in the assessment of the extent and impact of these drivers on soil erosion.  ...  To understand the influence of accelerated LULC changes and urban expansion as major drivers in landscape degradation in the Epworth district of the Harare Metropolitan Province, the RUSLE model was employed  ...  We are grateful to the United States Geological Survey (USGS), for providing one Arc-Second Global data from the Shuttle Radar Topography Mission (SRTM) for providing terrain corrected data and the Department  ... 
doi:10.3390/su12208531 fatcat:yhft6gktdfclfc3fk3qqcbcuqu

Simulation of Agricultural Management Alternatives for Watershed Protection

Pushpa Tuppad, Narayanan Kannan, Raghavan Srinivasan, Colleen G. Rossi, Jeffrey G. Arnold
2010 Water resources management  
The sources of the pollutants are improperly managed cropland and grazing land, dairy manure application, and effluent discharge from wastewater treatment facilities.  ...  The overall objectives of this study were to demonstrate a modeling approach using Soil and Water Assessment Tool (SWAT) model to simulate various BMPs and assess their long-term impacts on sediment and  ...  The nominal range sensitivity analysis evaluates the effect on model outputs exerted by individually varying only one of the parameters across its specified range, while holding all other parameters at  ... 
doi:10.1007/s11269-010-9598-8 fatcat:dvn467c2ezdthoysrm4bcfxopq

Synthetic monthly flow duration curves for the Cape Floristic Region, South Africa

A Hope, R Bart
2012 Water S.A  
The objective of this study was to derive 11 monthly FDC percentile flows and the mean annual flow (MAQ) for catchments in the Cape Floristic Region of South Africa using regression equations with readily  ...  The most important predictive variables were catchment mean annual precipitation, physiography and soils.  ...  National Aeronautics and Space Administration, Land Cover Land Use Change Program, Grant No. NNG05GR14G.  ... 
doi:10.4314/wsa.v38i2.4 fatcat:ktkmleclcbdvdaegge7mv4643q
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