Search Results - distribution spatiale

Assessing yield and fertilizer response in heterogeneous smallholder fields with UAVs and satellites by Schut, Antonius G.T., Sibiry Traoré, Pierre C., Blaes, Xavier, By, Rolf A. de

“…The objective of this paper is to demonstrate how high-resolution satellite and unmanned aerial vehicle (UAV) images can be used to assess the spatial variability of yield, and yield response to fertilizer. …”
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Exploring the Jordanian rangeland status transition merging the restoration experiment with modeling - 71st Annual Meeting, Technical Training and Trade Show January 28 - February... by Haddad, Mira, Strohmeier, Stefan, Vries, Job de, Nouwakpo, Sayjro

“…RHEM was applied to evaluate 1) long-term stability of the 3 different ecological states of the hillslopes (i-iii), and 2) event based spatially distributed watershed modeling to estimate how the different scenarios of landscape vegetation patterns would alter hydrologic processes. …”
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Land reform and child health in the Kyrgyz Republic by Kosec, Katrina, Shemyakina, Olga N.

“…We use household surveys collected before, during, and after the privatization reform and spatial variation in its timing to identify its health and nutrition impacts. …”
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Seed certification and maize, rice and cowpea productivity in Nigeria: An insight based on nationally representative farm household data and seed company location data by Takeshima, Hiroyuki, Abdoulaye, Tahirou, Andam, Kwaw S., Edeh, Hyacinth O., Fasoranti, Adetunji, Haile, Beliyou, Kumar, P. Lava, Nwagboso, Chibuzo, Ragasa, Catherine, Spielman, David J., Wossen, Tesfamichael

“…This study aims to evidence the value of quality assurance systems with an analysis of efforts to produce and distribute certified seed in Nigeria. We assess the associations between quantities of certified seeds produced and spatial variations in production locations proxied by headquarter locations of seed companies producing certified seeds, on the one hand, with spatial variations in the use of certified seed, yields, and output at the farm level, on the other hand. …”
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Ammonia emissions from the agriculture sector in Argentina; 2000–2012 by Castesana, Paula Soledad, Dawidowski, Laura Elena, Finster, Laura, Gómez, Darío R., Taboada, Miguel Angel

“…Compared to this work, NH3 emissions reported by EDGAR were 83% higher than our estimates. The time series of spatially distributed NH3 emission estimates clearly showed the effect of the expansion of cropland, the displacement of planted areas of N-fertilizes crops by competing soybean cultivation and the relocation and intensification of beef cattle production. …”
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Habitat suitability models for the sand lizard Liolaemus wiegmannii based on landscape characteristics in temperate coastal dunes in Argentina by Block, Carolina, Pedrana, Julieta, Stellatelli, Oscar Aníbal, Vega, Laura Estela, Isacch, Juan Pablo

“…Surveys were conducted during the lizard activity season, and landscape variables were measured in two spatial units. All information collected was compiled into a Geographic Information System. …”
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Justice in rural carbon transition: A micro-level diagnosis from a low-carbon demonstration village in east China by Wang, Xinxin, Hong, Jingjing, Chen, Kevin Z.

“…However, uniform policy instruments may unintentionally intensify the structural inequities in how carbon burdens and resource benefits are distributed across different social groups at the micro level. …”
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Precipitation characteristics of the South American monsoon system derived from multiple datasets by Carvalho, Leila M. V., Jones, C., Posadas, A., Quiróz, R., Bookhagen, B., Liebmann, B.

“…Fitting of gamma frequency distributions to daily precipitation shows differences in the parameters that characterize the shape, scale, and tails of the frequency distributions. …”
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Runoff and sediment monitoring in an agricultural watershed in the Ethiopian Highlands by Zehetbauer I, Strohmeier S, Ziadat, Feras M., Klik, Andreas

“…In the main outlet discharge was calculated based on water level data (pressure sensor) and by using a calibrated rating curve which was derived by means of spatial distributed flow velocity measurements within the fixed and rectangular shaped cross section. …”
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Mapping irrigation potential from renewable groundwater in Africa – a quantitative hydrological approach by Altchenko, Yvan, Villholth, Karen G.

“…As opposed to previous country-based estimates, this paper derives a continent-wide, distributed (0.5° spatial resolution) map of groundwater irrigation potential, indicated in terms of fractions of cropland potentially irrigable with renewable groundwater. …”
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Modeling the potential for floodwater recharge to offset groundwater depletion: a case study from the Ramganga basin, India by Chinnasamy, Pennan, Muthuwatta, Lal P., Eriyagama, Nishadi, Pavelic, Paul, Lagudu, S.

“…The Ganges basin faces considerable spatial and temporal imbalance between water demand and availability. …”
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Community-based monitoring, assessment and management of data-limited inland fish stocks in North Rupununi, Guyana by Shephard, S., Edwards, K., George, S., Joseph, E., James, S., David, O., Persaud, A., Watson, C., Vliet, N. van

“…We recommend using local ecological knowledge indicators to track spatial and temporal patterns in exploitation and fish stock status.…”
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Land reform and child health in the Kyrgyz Republic by Kosec, Katrina, Shemyakina, Olga

“…We use household surveys collected before, during, and after the reform and data on the spatial variation in the timing of privatization to identify its health and nutrition impacts. …”
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Simulated Future Climates for Ethiopia Using MIT-IGSM HFDs Based on CMIP5 by International Food Policy Research Institute, Massachusetts Institute of Technology

“…The dataset consists of high-resolution climate projections spanning 50 years, capturing spatial and temporal variations in temperature, precipitation, and extreme weather events. …”
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Novel insights into factors associated with yield response and nutrient use efficiency of maize and rice in sub-Saharan Africa. A review by Zingore, S., Adolwa, Ivan S., Njoroge, Samuel M., Johnson, J.M., Saito, Kazuki, Phillips, S., Kihara, Job Maguta, Mutegi, J., Murell, S., Dutta, S., Chivenge, Pauline P., Amouzou, K.A., Oberthür, Thomas, Weldesemayat, G.

“…Here, we provide distributions and expected values of yield response and agronomic efficiencies of nitrogen (N), phosphorus (P), and potassium (K) to serve as benchmarks for improving fertilizer recommendations. …”
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Risk-based evaluations of competing agronomic climate adaptation strategies: The case of rice planting strategies in the indo-Gangetic Plains by Mkondiwa, Maxwell, Urfels, Anton

“…OBJECTIVE: Here, we present a novel framework that uses a computational spatial ex-ante approach for risk-based evaluations of agronomic adaptation options. …”
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Mapping perceptions of species' threats and population trends to inform conservation efforts: the Bornean orangutan case study by Abram, N.K., Meijaard, E., Wells, J.A., Ancrenaz, M., Pellier, A.S., Runting, R.K., Gaveau, D.L.A., Wich, S., Nardiyono, Tjiu, A., Nurcahyo, A., Mengersen, K.

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Estimation of groundwater recharge and potentials under changing climate in Werii Watershed, Tekeze River Basin by Gebremeskel, G.

“…The surface runoff will show decrement within the range of 22-24%. A spatially distributed water balance model, WetSpass, was also used to estimate long term average seasonal groundwater recharge. …”
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Land Reform and Child Health in the Kyrgyz Republic by Kosec, Katrina, Shemyakina, Olga N.

“…We use household surveys collected before, during, and after the privatization reform and spatial variation in its timing to identify its health and nutrition impacts. …”
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The use of unit-level census data for research on poverty: a multiscale approach by Leclerc, Gregoire, Nelson, A., Knapp, E.B.

“…We briefly introduce spatial statistical methods to process the data on a given scale, which allows analyses of correlation with other factors significant on the same scale. …”
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