Lalit Kumar

Lalit Kumar
University of New England (Australia) | UNE · School of Environmental and Rural Science

PhD

About

353
Publications
201,220
Reads
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Citations
Introduction
Lalit Kumar currently works at the School of Environmental and Rural Science, University of New England (Australia). Their current project is 'All things connectivity'. Please visit Lalit-Kumar.com to see details of other projects, full list of publications and download pdf copies of papers.
Additional affiliations
November 2002 - January 2016
University of New England (Australia)
Position
  • Professor

Publications

Publications (353)
Article
Reliable and accurate soil organic carbon (SOC) maps are needed to monitor and improve SOC status in croplands and for agro-environmental applications. Topsoil (0–20 cm) SOC content from agricultural lands was predicted and mapped with quantified uncertainty across Nepal using state-of-the-art soil mapping techniques. Altogether 25,312 SOC observat...
Article
Full-text available
Sea level rise (SLR) due to global climate change negatively impacts coastal zones, in particular wetland and mangrove ecosystems. Mangroves in the Mekong Delta (MD) in Vietnam provide critical ecosystem services in the region; however, escalated relative SLR is likely to affect all ecosystems in the region, with mangroves probably more vulnerable...
Article
Full-text available
Few studies have focused on haze as a weather element and its correlation with crime. In this study, we examined haze as a weather variable to investigate its effects on criminal activity. We used both monthly crime data and weather records to build a regression model that contains a sequential statistical approach to reach the correlation coeffici...
Chapter
Climate change is affecting many facets of our lives and livelihoods, and food production is one of them. While the world population continues to increase, agricultural land and food production are being impacted by climate change at an ever-increasing rate. This chapter looks at climate change and its impacts on agri-food systems and food producti...
Article
Full-text available
Variability of rainfall pattern and its resulting issue of water shortage is a growing concern in Bhutan’s agricultural system. To assess the rainfall anomalies and the extent of farmers’ dependency on rainwater for farming, a semi-structured questionnaire survey was conducted in six districts of the country, covering low-, mid- and high-altitude a...
Article
Identifying habitat suitability and potential corridors are important tools for biodiversity conservation in the face of climate change. We modeled habitat suitability and simulated possible corridors for movement and gene flow among the Asiatic black bear (Ursus thibetanus) population in the Northern Highlands of Pakistan (NHP). Results indicated...
Article
Full-text available
Although algorithms are well developed to predict soil organic carbon (SOC), selecting appropriate covariates to improve prediction accuracy is an ongoing challenge. Terrain attributes and remote sensing data are the most common covariates for SOC prediction. This study tested the predictive performance of nine different combinations of topographic...
Preprint
Full-text available
Few studies have focused on haze as a weather element and its correlation with crime. In this study, we examined haze as a weather variable to investigate its effects on criminal activity. We used both monthly crime data and weather records to build a regression model to predict crime cases considering three weather factors; temperature, humidity a...
Article
Full-text available
The global population is growing rapidly and food production needs to be stepped up substantially to supply the additional demand expected by projected increased population. Further, climate change is expected to exert considerable pressure on global agriculture and food production. Crop wild relatives (CWR), which possess large untapped genetic di...
Article
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Village Tank Cascade Systems (VTCSs) in the Dry Zone of Sri Lanka have evolved as sustainable ecosystems through human interventions to ensure water availability and other services for people and their environs during the last few millennia. However, VTCSs are vulnerable to global environmental changes resulting in continual deterioration of ecolog...
Article
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The cropping systems in southwest coastal Bangladesh face multiple challenges. A clearer understanding of the trajectories of cropping intensification can promote policy responses to current impacts, adaptations, and target support to farmers. This research aimed to assess (i) observed and perceived changes in temperature, rainfall and salinization...
Article
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Parthenium weed (Parthenium hysterophorus L.) is an invasive alien plant species that is spreading rapidly all over the world. With globalization and climate change, it will continue to spread, posing threats to agriculture, biodiversity and the environment. To determine its invasion and impacts in Bhutan, an investigation was undertaken in West-Ce...
Article
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A correction to this paper has been published: https://doi.org/10.1007/s10530-021-02573-w
Article
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Coastal wetlands in the Mekong Delta (MD), Vietnam, provide various vital ecosystem services for the region. These wetlands have experienced critical changes due to the increase in regional anthropogenic activities, global climate change, and the associated sea level rise (SLR). However, documented information and research on the dynamics and drive...
Chapter
There is a lack of studies on whether the use of open source mid-resolution image and traditional classification techniques can produce a high-quality output with sufficient level of accuracy required to map mangrove forest trees at species level. To bridge this gap, we employed maximum likelihood algorithm to identify and map out mangrove species...
Article
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Eichhornia crassipes and Salvinia molesta are two of the world’s worst aquatic invasive alien plant Species (AIAPS) that have a major impact on the environment, agricultural production and food security. The aim of this study was to understand the current and potential distribution of E. crassipes and S. molesta under climate change in the tropical...
Article
While most legacy soil maps are available at coarse spatial detail with composite mapping units, high resolution and detailed soil maps are desired for various land resource applications. In time and resource constrained circumstances, the application of disaggregation methods and modelling approaches that capitalise on existing, less detailed soil...
Article
Topsoil (0–20 cm) soil organic carbon content (SOC, g kg⁻¹) was predicted and mapped at 30 m resolution on an intensively cultivated alluvial plain in the Sarlahi district of Nepal. It has been reported that SOC content in this region has decreased to alarmingly low levels; however, no documented work on the mapping of SOC at high spatial resolutio...
Article
Wetlands are important ecosystems that provide many critical services for ecology and human communities. In the Mekong Delta (MD), Vietnam, the combined effects of climate change and sea level rise (SLR) threaten coastal mangrove forest wetlands, while inland Melaleuca forest wetlands are affected by regional changes in climate. Hence, it is essent...
Article
Wetlands are important ecosystems that provide many critical services for ecology and human communities. In the Mekong Delta (MD), Vietnam, the combined effects of climate change and sea level rise (SLR) threaten coastal mangrove forest wetlands, while inland Melaleuca forest wetlands are affected by regional changes in climate. Hence, it is essent...
Article
Approximately 20–30% of plant and animal species are at risk of extinction by the end of the 21st century owing to climate change. Range shifts and range contractions in plant species will dramatically affect the distribution of animals relying on them for food and shelter. The negative impacts of climate change on forested landscapes of the northe...
Article
Full-text available
Escalation of human-elephant conflict (HEC) in India threatens its Asian elephant ( Elephas maximus ) population and victimizes local communities. India supports 60% of the total Asian elephant population in the world. Understanding HEC spatial patterns will ensure targeted mitigation efforts and efficient resource allocation to high-risk regions....
Article
Climate and environmental change are critical factors affecting water resources, irrigation and farming systems in Ethiopia as most of the population and the country’s economy depend on agriculture. The aim of this study was to investigate farmers’ perceptions of climate and environmental change and impacts of those changes on their farming systems...
Article
There have been few studies investigating the implications of the potential distribution of plant invasions on native biodiversity due to climate change. In this study, we used combined climatic suitability maps of 14 priority Invasive Alien Plant Species (IAPS) in Sri Lanka under the current climate and under Representative Concentration Pathway (...
Article
Full-text available
Salinization is an explicit global threat faced by coastal low lands. The increased seawater ingression into groundwater due to various climatic and anthropogenic factors a�ects functioning of ecosystems, biodiversity and the sustainability of coastal agriculture. This study was undertaken to investigate the changes in groundwater salinity in Ja�na...
Article
Understanding the interactive effects and relationships between biochemical elements of tea leaves and the related factors, particularly climatic, cultivar, and geographic, is key for high-quality Ceylon tea production. The objectives of this study were to (1) investigate the effects of season × cultivar × agro-ecological regions (AERs) on the four...
Article
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Even though climate change is having an increasing impact on tea plants, systematic reviews on the impact of climate change on the tea system are scarce. This review was undertaken to assess and synthesize the knowledge around the impacts of current and future climate on yield, quality, and climate suitability for tea; the historical roots and the...
Article
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Soil salinity is a serious threat to coastal agriculture and has resulted in a significant reduction in agricultural output in many regions. Jaffna Peninsula, a semi-arid region located in the northern-most part of Sri Lanka, is also a victim of the adverse effects of coastal salinity. This study investigated long-term soil salinity changes and the...
Article
Full-text available
Climate variability can influence the dynamics of aquatic invasive alien plants (AIAPs) that exert tremendous pressure on aquatic systems, leading to loss of biodiversity, agricultural wealth, and ecosystem services. However, the magnitude of these impacts remains poorly known. The current study aims to analyse the long-term changes in the spatio-t...
Article
Impacts of climatic and non-climatic risks are on the rise in the major maize-growing counties of western Kenya. We conducted a questionnaire survey of sampled maize farmers in Nandi, West Pokot, Uasin Gishu and Trans Nzoia counties, achieving 210 responses. We used a stepwise regression model to evaluate the factors influencing farmers’ perception...
Article
Full-text available
Climate change and variability are a major threat to the agricultural sector globally. It is widely accepted that the changes in temperature, rainfall patterns, sea water level and concentration of CO2 in the atmosphere will have the most devastating impacts on agricultural production. This paper examines the past and future crop production and foo...
Chapter
In a landslide prone area in mountainous northern Philippines, landslide susceptibility using binary logistic regression was investigated. Landslide data were randomly divided into training and validation sets using 80% and 20% proportions, respectively. A detailed logistic regression procedure was applied and presented herein. Nine landslide condi...
Article
Invasive alien plant species (IAPS) have had a significant impact on agriculture in many countries in the world. Climatic suitability maps can be used to assess the vulnerability of agricultural areas for potential plant invasions. We used climatic suitability heat maps of IAPS to examine how potential climatic suitability for multiple IAPS invasio...
Article
The Mekong Delta (MD), Vietnam is a large tropical wetland important for commodity provision, water balance regulation, and biodiversity conservation. However, the delta is under severe fire risk due to prolonged drought and rising temperatures largely emanating from climatic change. Our study applied MODIS Terra land surface reflectance (MOD09A1),...
Article
Full-text available
The Jaffna Peninsula in Sri Lanka has a generally flat topography with a median elevation of 2.72 m, and thus faces a high risk from sea-level rise that has the potential to have adverse impacts on the livelihoods of coastal communities. Understanding these risks and identifying the regions that could be adversely impacted is critical for planning...
Article
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This study examined the impact of land use/cover changes on soil erosion in western Kenya in the years 1995 and 2017. The study used the GIS-based Revised Universal Soil Loss Equation (RUSLE) modelling approach and remote sensing assessment. The results showed that the average soil loss through sheet, rill and inter-rill soil erosion processes was...
Article
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Rice paddy fields, considered as a human-made wetland ecosystems, play important roles in food production and ecosystem conservation. Nowadays, rice cultivation in the Mekong Delta, Vietnam, is under severe threat from climate changes, yet there is a shortage of documented information and research on rice production under future climate. Hence, the...
Article
Agriculture is responsive to weather and climate variability. In addition to the climatic stressors, coastal agriculture is influenced by non-climatic factors. Therefore, understanding farmers' perception of the causes of their changes in farm management plays a key role in motivating them to adopt agricultural adaptations. The aim of this study wa...
Article
Full-text available
Soil salinity is a major threat to land productivity, water resources and agriculture in coastal areas and arid and semi-arid regions of the world. This has a significantly negative effect on the land and causes desertification. Monitoring salt accumulation in the soil is crucial for the prevention of land degradation in such environments. This stu...
Article
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The threat of accelerating climate change on species distribution now and in the future is a topic of increasing research interest. However, little work has been undertaken to assess how shifting climates will affect the suitability of tea cultivation. Therefore, we used MaxEnt modelling to project the impact of current and future climatic scenario...
Article
Full-text available
Watershed morphometric assessment is about measurements and calculations of land surface forms for the purpose of understanding hydro-geomorphological character and patterns. Important natural environment geo-information and summary of the spatial characteristics of Tana River Basin (TRB) in Kenya have been obtained through hydro-geomorphometric an...
Article
Understanding the hydrological processes of a watershed in response to climate change is vital to the establishment of sustainable environmental management strategies. This study aimed to evaluate the variability of potential evapotranspiration (PET) and water availability in the Awash River Basin (ARB) under different climate change scenarios and...
Article
Invasive weed species (IWS) threaten ecosystems, the distribution of specific plant species, as well as agricultural productivity. Predicting the impact of climate change on the current and future distributions of these unwanted species forms an important category of ecological research. Our study investigated 32 globally important IWS to assess wh...
Article
Full-text available
Coastal farmers are the first group of people who feel climate-related calamities most severely, such as sea-level rise, salinity intrusion, coastal flooding, tidal surges and tropical cyclones. They are operating agricultural activities under these climatic conditions that affect farm productivity. This study explores farmer perceptions of changes...
Article
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Changes in the urban landscape resulting from rapid urbanisation and climate change have the potential to increase land surface temperature (LST) and the incidence of the urban heat island (UHI). An increase in urban heat directly affects urban livelihoods and systems. This study investigated the spatiotemporal variation of the UHI in the Kurunegal...
Article
Understanding the dynamics of land-use and land-cover change at a basin scale, including its driving causes, is vital for the development and planning of appropriate environmental management policies and strategies. The aim of this research was to analyse and understand the long-term dynamics of land-use/land-cover changes and population growth in...
Article
Sea-level rise (SLR) is anticipated to be one of the most crucial factors putting pressure on the livelihood of human life in the 21st century. The Jaffna Peninsula, located at the northern tip of Sri Lanka, is no exception. This area lies entirely within 10 km of the coast and has an almost flat topography with a maximum elevation of 15 m above me...
Conference Paper
Full-text available
Soil erosion is a severe environmental problem, and Land Use Land Cover Changes (LUCC) have significant impact on it. Being a hilly country with undulating topography accompanied with heavy rainfall, Nepal is predisposed to natural hazards including soil erosion. We studied the LUCC in Sarada, Rapti and Thuli Bheri river basins of Nepal during 1995...
Article
Full-text available
Being a country in the Himalayas, Bhutan is highly prone to the vagaries of weather events that affect agricultural production and the subsequent livelihood of the people. To identify the main issues that affect crop production and the decisions of farmers, a survey was conducted in three different agro-ecosystems in Bhutan. Our key findings indica...
Article
The current research investigated the present and future projected distribution of rice ( Oryza sativa L.) based on climatic suitability under three representative concentration pathways (RCPs) of the Intergovernmental Panel on Climate Change using maximum entropy (MaxEnt) modelling. The MaxEnt models predict that rice distribution in Bhutan will u...
Article
Full-text available
Soil erosion is a global environmental threat, and Land Use Land Cover Changes (LUCC) have significant impacts on it. Nepal, being a mountainous country, has significant soil erosion issues. To examine the effects of LUCC on water erosion, we studied the LUCC in Sar-ada, Rapti and Thuli Bheri river basins of Nepal during the 1995-2015 period using...
Data
Rainfall data from 53 rainfall stations (1990–2016)
Article
Full-text available
There is substantial global concern over the potential impacts of plant invasions on native biodiversity in protected areas (PAs). Protected areas in tropical island countries that host rich biodiversity face an imminent risk from the potential spread of invasive alien plant species. Thus, the aim of this study was to gain a general understanding o...
Article
Full-text available
How the current distribution of tea cultivation is influenced by specific environmental conditions in Sri Lanka is yet to be explored. Therefore, this study aims to assess the differences between tea and non-tea growing areas with respect to climatic and topographic covariates, and to determine the major covariates that control tea distributions. C...
Article
Agro-ecological landscape changes along the Punatsang Chhu (River) Basin of Bhutan was assessed using Geographic Information System (GIS) and Remote Sensing techniques. The study used satellite data (Landsat imageries) of three periods (1996, 2010 and 2017). The result showed a 51% reduction in the snow and glacial area over the last 20 years. Furt...
Article
Climate change is real and is considered to be impacting agricultural development in Bhutan. To authenticate this claim, a survey was conducted in six districts of Bhutan, representing low- , mid- and high-altitude regions of the country from March to May, 2019. Based on the current research, we present farmers’ perceptions of climate change and it...
Article
Full-text available
Salinization is an explicit global threat faced by coastal low lands. The increased seawater ingression into groundwater due to various climatic and anthropogenic factors affects functioning of ecosystems, biodiversity and the sustainability of coastal agriculture. This study was undertaken to investigate the changes in groundwater salinity in Jaff...
Chapter
Pacific island countries (PICs) are highly susceptible to sea-level rise and extreme events due to their size, location, and isolated nature. Populations in PICs are generally concentrated along the coast due to transportation ease, reliance on tourism for income, and livelihoods tied to marine resources. A majority of PICs are low-lying islands an...
Chapter
Oceanic islands have a history of being misunderstood by outsiders, commonly marginalized in global synthesis and planning, their considerable diversity often understated. To capture and explain the diversity of islands in the Pacific, a classification is developing using elevation and lithology (rock type) as the highest level criteria. For each o...
Chapter
Assessment of Pacific island vulnerability to changing climate and ocean conditions was undertaken at two scales, demonstrating a technique for vulnerability downscaling and establishing the suitability of coastal landform information to application at country or island scale. The approach acknowledges the transition of physical characteristics inf...
Chapter
This chapter discusses the potential impacts of climate change on coastal infrastructure in the Pacific. It also analyses the location of built infrastructure in 12 Pacific island countries with a view to determining the percentages in close proximity to the coast and so highly vulnerable to climate-related impacts. Data relating to the geographic...
Chapter
Climate change has been recognized as one of the most critical and controversial issues facing the world in the twenty-first century. It is predicted to lead to adverse and irreversible impacts on the earth and ecosystems as a whole. This chapter discusses the causes of climate change and current and potential impacts that will affect the people no...
Chapter
The Pacific Islands region is a sensitive indicator of projected climate change in the twenty-first century. This chapter provides comprehensive information on climate change and how it impacts on biodiversity in the Pacific Island countries as it is ironically one of the most vulnerable regions in this regard. The islands of the Pacific region hol...
Chapter
This chapter details an objective method of developing an index of island susceptibility to climate change. Three separate indices are developed to estimate the potential of an island to physical change in response to likely climatic changes. These are indicative susceptibility, exposure index and geomorphic susceptibility. To develop the indicativ...
Article
Full-text available
Conventional tillage practices have been regarded as the major reason for the loss of fertile topsoil in the sloping agricultural lands of the middle hills of Nepal. Reports on the effects of no-till and mulch on soil and corn yield in these regions are scarce, although these farming practices have been recommended to reduce soil erosion and increa...
Data
Table S1: ANOVA for soil data, Table S2: ANOVA for crop data, Figure S1: Effect of tillage (−T or +T), mulch (−M or +M), and corn (presence or absence [BF]) on cumulative soil loss at six sampling seasons (early monsoon, monsoon and late monsoon in 2017 and 2018), Figure S2: Effect of tillage (−T or +T), mulch (−M or +M), and corn (presence or abse...