A5047716830- Soil Carbon and Nitrogen Dynamics
- Soil Geostatistics and Mapping
- Soil and Land Suitability Analysis
- Soil erosion and sediment transport
- Agriculture and Rural Development Research
- Rangeland Management and Livestock Ecology
- Geochemistry and Geologic Mapping
- Sustainable Agricultural Systems Analysis
- Land Use and Ecosystem Services
- Agricultural Innovations and Practices
- Ecology and Vegetation Dynamics Studies
- Conservation, Biodiversity, and Resource Management
- Scientific Computing and Data Management
- Image Processing and 3D Reconstruction
- African Botany and Ecology Studies
- Hydrology and Watershed Management Studies
- Soil and Unsaturated Flow
- Forest ecology and management
- Species Distribution and Climate Change
- Remote Sensing in Agriculture
- Energy and Environment Impacts
- Virtual Reality Applications and Impacts
- Land Rights and Reforms
- 3D Modeling in Geospatial Applications
- Robotics and Automated Systems
World Agroforestry Centre
2015-2024
Duke University
2018
University of British Columbia
2018
London School of Hygiene & Tropical Medicine
2018
University of Illinois Urbana-Champaign
2018
York University
2018
Covenant College
2018
Impact
2018
University of London
2018
Norwegian University of Life Sciences
2005-2006
The '4 per mille Soils for Food Security and Climate' was launched at the COP21 with an aspiration to increase global soil organic matter stocks by 4 1000 (or 0.4 %) year as a compensation emissions of greenhouse gases anthropogenic sources. This paper surveyed carbon (SOC) stock estimates sequestration potentials from 20 regions in world (New Zealand, Chile, South Africa, Australia, Tanzania, Indonesia, Kenya, Nigeria, India, China Taiwan, Korea, Mainland, United States America, France,...
Soils are increasingly recognized as major contributors to ecosystem services such food production and climate regulation (1, 2), demand for up-to-date relevant soil information is soaring. But communicating among diverse audiences remains challenging because of inconsistent use technical jargon, outdated, imprecise methods. Also, spatial resolutions maps most parts the world too low help with practical land management. While other earth sciences (e.g., climatology, geology) have become more...
There is a need for up-to-date assessments and maps of soil properties land health at scales relevant decision-making management, including that are dynamic hence change in response to management. Also, there approaches mapping capture the ever increasing effects humans having on environment general specifically worldwide. In this paper, we develop models digital based remote sensing data from Moderate Resolution Imaging Spectroradiometer (MODIS) platform Africa. The article presents organic...
Globally applicable calibrations to predict standard soil properties based on infrared spectra may increase the use of this reliable technique. The objective study was evaluate ability mid‐infrared diffuse reflectance spectroscopy (4000–602 cm −1 ) chemical and textural for a globally distributed spectral library. We scanned 971 samples selected from International Soil Reference Information Centre database. A high‐throughput accessory used with optics that exclude specular as potential...
Current methods for assessing soil organic carbon (SOC) stocks are generally not well suited understanding variations in SOC landscapes. This is due to the tedious and time-consuming nature of sampling most commonly used collect bulk density cores, which limits repeatability across large areas, particularly where information needed on spatial dynamics at scales relevant management spatially explicit targeting climate change mitigation options. In current study, approaches were explored (i)...
Several forest change detection algorithms are available for tracking and quantifying deforestation based on dense Landsat Sentinel time series satellite data. Only few also capture regrowth after clearing in an accurate continuous way across a diversity of types (including dry seasonal forests) thus suitable to address the need better information secondary succession assessing restoration activities. We present new algorithm that makes use flexibility kernel density estimations create...
Abstract. Soil organic carbon (SOC) stabilization and destabilization has been studied intensively. Yet, the factors which control SOC content across scales remain unclear. Earlier studies demonstrated that soil texture geochemistry strongly affect content. However, those findings primarily rely on data from temperate regions where mineralogy, weathering status climatic conditions generally differ tropical subtropical regions. We investigated properties climate variables influencing...
Abstract Soil infiltration is critical for water security and related ecosystem services. This infiltration, the ability of soils to absorb at their surface, controlled by soil hydraulic conductivity. Despite recent efforts in assembling measurements conductivity, global databases derived pedotransfer functions lack coverage tropics. Here, we present other indicators land health collected systematically 3,573 plots from 83 100 km 2 sites across 19 countries sub‐Saharan Africa. We use these...
The multiple ecosystem services provided by healthy soil are well known and include carbon sequestration to mitigate climate change, a medium for plant agricultural production regulating the hydrologic cycle. Despite wide recognition of importance these services, drivers organic (SOC) dynamics across various land uses in East Africa poorly understood. objectives this study were threefold: quantify SOC stocks Tanzania; assess effect cover erosion on SOC; investigate relationship between...
A thorough understanding of the variation in total soil element concentrations is important especially Sub-Saharan Africa (SSA) contexts for agricultural and environmental management at large scale. Fingerprinting elemental composition may form a useful basis evaluating soils way that relates to soil-forming factors inherent functional properties. The objectives this paper are quantify proportion variability by X-ray fluorescence (TXRF) method 1074 samples from Soil Information Service...
Land-use change continues at an alarming rate in sub-Saharan Africa adversely affecting ecosystem services provided by soil. These impacts are greatly understudied, especially biodiversity rich mountains East Africa. The objectives of this study were to: conduct a biophysical baseline soil and land health; assess the effects cultivation on organic carbon (SOC); develop map SOC high resolution to enable farm-scale targeting management interventions. Biophysical field surveys conducted 100 km2...
Farmer-managed natural regeneration (FMNR) is being promoted for restoration beyond its original range in the Sahel. FMNR involves farmers selecting and managing on their fields, while keeping them under primary function of agricultural production. However, little known about what regenerates different contexts, even though this underlies potential impact. Here we assess how human impact, land degradation dispersal limitation affect structural functional properties across 316 plots...
Abstract Soil organic matter contributes to productivity in terrestrial ecosystems and contains more carbon than is found the atmosphere. Yet, there little understanding of soil (SOC) sequestration processes during tropical forest succession, particularly after land abandonment from agriculture practices. Here, we used vegetation environmental data two large‐scale surveys covering a total landscape area 20,000 ha Southeast Asia investigate effects plant species diversity, functional trait...
Abstract Enhancing knowledge on the role of evolutionary history during forest succession and its relationship with ecosystem function is particularly relevant in context landscape restoration for climate change mitigation adaptation. We used fine resolution vegetation environmental data (soil, elevation slope) from two large‐scale surveys (320 × 1000 m 2 plots 10 km blocks) Upper Mekong to quantify (1) abiotic biotic (species interactions) factors community assembly processes (2) effect...
The importance of equity has been emphasized in climate change, biodiversity loss, land degradation, and ecosystem restoration. However, implications are rarely considered explicitly restoration projects. Although the role studied context conservation environmental governance, variables often ignored studies, spatial analyses lacking. To address these gaps, we use a mixed methods approach, integrating spatially explicit ecological social data to evaluate, through an lens, project semi‐arid...
Soil erosion has long been recognized as a major process of land degradation globally, affecting millions hectares in the tropics and resulting losses productivity biodiversity, decreased resilience both marine terrestrial ecosystems, increased vulnerability to climate change. This paper presents an assessment extent soil global at moderate spatial resolution (500 m) based on combination systematic field surveys using Land Degradation Surveillance Framework (LDSF) methodology Earth...
Agroforestry is widely purported to improve the livelihoods of smallholder farmers, rehabilitate degraded landscapes, and enhance provisioning ecosystem services. Yet, evidence supporting these longer-term impacts limited. Using a quasi-experimental impact evaluation design informed by theory-based mixed methods framework, we investigated selected intermediate final outcomes nine-year effort led Vi Agroforestry, Swedish non-governmental organization (NGO), promote agroforestry in large...