Hukum Singh

Hukum Singh
Forest Research Institute · Plant Physiology Discipline

M. Sc. (Botany) M.Sc. (Environmental Science) M. A. (Economics) M. Sc (pursuing in Sustainability Science), Ph. D. (Plant Physiology)
Working on pheno-physiological response of trees against abiotic stress i.e.rising CO2, temperature, air pollution etc.

About

103
Publications
40,535
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Introduction
Working as Scientist of Tree Physiology at Plant Physiology Discipline of Forest Research Institute, Dehradun, India, aims to understand the response of forestry tree species, including medicinal plants, under abiotic stresses such as elevated CO2, temperature, water, nutrient etc. using automated Open Top Chamber (OTCs) and other approaches. I am also unraveling the hidden climate-driven effects on the forest ecosystem's physiological and phenological adaptation through long-term monitoring.
Additional affiliations
July 2007 - June 2010
G. B. Pant University of Agriculture and Technology, Pantnagar
Position
  • PhD Student

Publications

Publications (103)
Article
The plants follow various strategies for adapting and mitigating climatic and environmental stresses. This offers an opportunity to comprehend adaptation and mitigation mechanisms under changing climate and environment emerging from vehicular emissions. We deployed an approach, i.e., physiological (Phy) and biophysical (Bioph) functional traits (FT...
Article
Full-text available
The study aims to assess various carbon regulating services of a limestone mine site, reclaimed 30 years back, compared to its adjoining natural forest. The natural forest is dominated by broad leaf species (Quercus leucotricophora) whereas, the reclaimed sites have Cupressus torulosa as the dominant species. Though there was no significant diff...
Article
Full-text available
Wetlands are emitters of greenhouse gases. However, many of the wetlands remain understudied (like temperate, boreal, and high-altitude wetlands), which constrains the global budgets. Himalayan foothill is one such data-deficient area. The present study reported (for the first time) the greenhouse gas fluxes (CO2, CH4, N2O, and H2O vapor) from the...
Article
Full-text available
Understanding the response of medicinal plants to elevated CO2 concentrations is crucial to evaluate the climate change impacts on medicinal plant’s productivity together with the accumulation of biochemical constituents counting nutrients wealth. The present study investigated the effect of elevated CO2 concentrations (ambient—~400±4, 600±12, and...
Chapter
Climate change is affecting global natural resources, including forests. It has also affected the Indian Himalayan forests by influencing ecosystem services derived from it. The majority of the Indian population depends directly or indirectly on these services, ultimately affecting Himalayan communities. The climate change impacts may alter the str...
Article
Phenological studies involve capturing information on dates of recurrent and seasonal biological events in plants and animals. In plants, phenological events of leaf flushing, full bloom, autumn discolouration, leaf fall etc. can be used to distinguish vegetation into separate classes. We refer here such phenological distinction as Phenological Fun...
Chapter
Biofuel production has gained much attention because of the many direct and indirect benefits against many global and national concerns and challenges. Besides its carbon-mitigating potential and reducing GHG emissions that help to minimize climate change, it has a massive role in India’s energy security. India is known to import 83% of its domesti...
Article
Full-text available
Hydraulic properties of soil in terms of near saturated hydraulic conductivity (Kh ) –2 drive water distribution and availability in soil. There is limited knowledge of how plant functional traits (PFTs) can influence soil hydraulic properties. We quantified the path in which the plant and its functional characteristics affect Kh directly or indire...
Article
Socio-environmental vulnerability assessment in mountain landscapes depends upon multiple human-induced factors such as GHGs emissions from industry, transport, agriculture, and other vital economic sectors. However, there is a knowledge gap on choosing suitable indicators to assess socio-environmental vulnerability that addresses altitudinal varia...
Chapter
With the increasing concern about climate change and its impact, there is an urgent need to understand the carbon sequestration mechanism of forested landscapes. As the role of forests in regulating climate is well established, the assessment of underlying processes is essential. It is necessary to develop understanding on the exchange of energy an...
Article
Terminalia arjuna is native to India and occurs naturally along the banks of streams and rivers. The species is characterized to dry deciduous forests. The present study was carried out for the growth and physiological changes of T. arjuna in different elevated CO2 levels. Open top chambers were used to expose plants to ambient and elevated CO2 con...
Article
The land use and land cover (LULC) maps are often required by planners and policymakers for effective planning and management interventions at the local, national, regional and global levels. Various attempts have been made to develop LULC maps using field-based surveys and by processing remotely sensed images. These maps can be developed using dif...
Article
Full-text available
Elevated CO Enhanced Growth 2 and Physiological Process of Populus deltoides Bartr. ex Marsh Accumulation of CO in the atmosphere considerably affect plants and 2 trees of the terrestrial ecosystem. Under elevated CO , plants may alter 2 growth and physiology for adaptation to survive. The aim of this study was to investigate the physiological and...
Article
Assessment of soil organic carbon (SOC) pool is an essential pace for understanding the carbon sequestration potential (CSP) of the soil system as a mitigation strategy and also investigate that they act as a source or sink for the atmospheric CO2 subject to the level of saturation. Improved CSP has been recognized as one of the possible solutions...
Article
Full-text available
Aim We estimated how seasonality in conjunction with key climatic variables affects morphological and physiological plant functional traits (PFTs) and soil essential (micro and macro) nutrients in oak, pine, and mixed forests. Method The different PFTs were tested using several laboratory methods and using the portable photosynthesis system Li-COR...
Article
Full-text available
Key message An integrated approach of physiological- and biophysical-based indicators was used to assess the tolerance of roadside plantations of Alstonia scholaris towards urban roadside air pollution caused due to heavy traffic movements. It was inferred that A. scholaris is a tolerant species to vehicular emissions and can be used to develop roa...
Article
Full-text available
Increasing atmospheric temperature is the consequence of global warming, which is expected to influence crop growth and development, resulting in declining productivity in the tropical agriculture system. The selection of temperature tolerant crop cultivars with higher productivity to meet the future demand of the world expanding human population r...
Article
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The composition of species can play an essential role in reducing atmospheric carbon dioxide. Forest trees are an important part of the functioning of the terrestrial ecosystem, predominantly in the cycling of carbon. However, tree physiology is much less studied than crop physiology for several reasons: a large number of species, difficulty in mea...
Article
Full-text available
Seasonal variations affect the rate of biomass accumulation in plants which is internally governed by biochemical metabolites. Studying the impact of atmospheric seasonal changes on biochemical parameters can improve our understanding of various plant species' physiological plasticity. Bamboos are a fast-growing group of woody grass species, widely...
Article
Full-text available
Agroforestry has great potential for carbon (C) sequestration among different land uses of the Himalayan region, India. However, our knowledge of C sequestration, in particular, agroforestry system around the world is poor. Therefore, we conducted a study to understand biomass accumulation and carbon allocation in different components of the agrofo...
Preprint
Full-text available
Human-induced CO 2 emissions since the preindustrial era have accumulated CO 2 in the atmosphere which has influenced the plant structure and function including bio-chemical constituents of the plant system. The Himalayan vegetation has been predicted to be more vulnerable and sensitive to climate change. However, it is still not well documented th...
Preprint
The plants follow various strategies for adapting and mitigating climatic and environmental stresses. This offers an opportunity to comprehend adaptation and mitigation mechanisms under changing climate and environment emerging from vehicular emissions. We deployed an approach, i.e., physiological (Phy) and biophysical (Bioph) functional traits (FT...
Article
Brassinosteroids (BRs), class of steroidal phytohormones have a crucial role in various physiological mechanisms and involved in plant defense against different biotic and abiotic stresses. Understanding BRs action mechanism is very critical to promote plant development and boosting agricultural productivity. The mechanism of BRs action and signall...
Article
Full-text available
Understanding the vulnerability of forests and its associated factors is crucial for the sustainable management of forested landscapes. The assessment of vulnerability of forests in the Indian Western Himalayan (IWH) region comprising the states of Jammu & Kashmir (J&K), Himachal Pradesh (HP) and Uttarakhand (UK) was done using six indicators of vu...
Preprint
Full-text available
Aim: We estimated that how seasonality in conjunction with key climatic variables affects morphological and physiological plant functional traits (PFTs) and soil essential (micro and macro) nutrients in oak, pine, and mixed forests. Method: The different PFTs were tested using several laboratory methods and also using the portable photosynthesis sy...
Chapter
Full-text available
Degradation of land resulting in reduced ecosystem services is one of the prominent issues that need to be addressed. Land management practices that are not environment friendly have emerged as a threat to various levels of land degradation and ultimately affect the livelihood of people. Overexploitation, deforestation, and several levels of degrad...
Article
Full-text available
Assessment of soil organic carbon (SOC) pool is an essential pace for understanding the carbon sequestration potential (CSP) of the soil system as a mitigation strategy and also investigate that they act as a source or sink for the atmospheric CO2 subject to the level of saturation. Improved CSP has been recognized as one of the possible solutions...
Article
Full-text available
Heat stress is a major constraint to crop production and food security. The incidence of heat stress in crops has increased due to rapid changes in the global climate. Heat stress has a tremendous impact on crop growth and productivity due to its direct and indirect effects on water. Therefore, it is important to understand the morphological, physi...
Article
A massive increase in air emissions resulted from the growing population and the increasing use of automobiles. This air pollution adversely affects living beings including humans, plants as well as a physical property of the surrounding environment. In this way, tree species standing along with the roadside and in their proximity act as defense gu...
Article
Full-text available
Climate change is the severest environmental threat of the 21 st century. The main factor responsible for the current pace of climate change is attributed to anthropogenic emission of greenhouse gases (GHGs), mainly carbon-dioxide (CO 2). So, the aim of reducing carbon sources and increasing the carbon sink can be achieved by protecting the carbon...
Article
Full-text available
Trees, especially fast-growing multipurpose species, are becoming an integral part of intensive commercial agroforestry models introduced in recent times. Yet, the major hindrance for their productivity and survival is weed infestation with its toxic effects. They eventually decline the biodiversity by smothering native plants and disturbing their...
Article
Full-text available
In this study, the soil CO2 efflux was measured by closed dynamic system method along with soil and meteorological parameters at 1600, 1700 and 1800 m elevations along different directional-aspects over a period of one year. The annual CO2 efflux rate (Fc) varied from 1.02 to 22.57 μmol m-2 sec-1 , which was highest in the rainy season. The annual...
Chapter
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The communities living in the areas that are devoid of irrigation facilities usually categorized as “rainfed areas” cannot meet their subsistence need through conventional agriculture. People in these areas are often forced to adopt alternate livelihood option including extraction of resources from the nearby forests. Extraction in the form of food...
Chapter
Antioxidants are chemical substances that prevent cell damage during different stress. Antioxidants are found in all the form of foods, including fruits and vegetables. Although oxidation reactions are crucial, this might cause damage to life. Antioxidants (glutathione, vitamin E, C, etc.) and various other enzymes (superoxide dismutase, catalase,...
Article
Full-text available
Climate change is expected to alter the structure and functions of an ecosystem including species composition and its geographical distribution. There is limited understanding on how the habitat of the Himalayan range-restricted species would be affected under the influence of climate change. In the present study, we model the climate change impact...
Article
Full-text available
Soil organic matter is major terrestrial pool for soil organic carbon (C) and nitrogen (N), and their decomposition is sensitive to vegetation and climate change. Integrated nutrient management (INM) deals with the combined application of chemical fertilizers and organic manures for nutritional requirement of crops and avoid the adverse effect of l...
Article
Full-text available
This study was carried out in degraded and non-degraded community forests (CF) in the Terai region of Kanchanpur district, Nepal. A total of 63 concentric sample plots each of 500 m 2 was laid in the inventory for estimating above and below-ground biomass of forests by using systematic random sampling with a sampling intensity of 0.5%. Mallotus phi...
Article
Full-text available
Knowledge of carbon (C) pools in soils is helpful in devising practices for efficient carbon management in intensive cropping systems. Carbon fractions of soil organic carbon is used as an indicator for land-use induced change in soil quality. The present study evaluated carbon pools under Terminalia chebula (chebulic myrobalan) based agroforestry...
Chapter
Full-text available
Healthy soil ecosystem is a prerequisite for better agricultural productivity, which is governed by various local abiotic and biotic factors. Agricultural system at higher altitudes has unique characteristics and is entirely distinct from that at the lower altitude. The abiotic and biotic factors are the drivers of the soil ecosystem processes and...
Article
Full-text available
Forest ecosystems are one of the complex systems that provide essential goods and services to support human survival. Various processes of a forest ecosystem are interlinked to each other to make the system complex and unique. Researchers have been striving to understand the interlinked processes to manage the forests in a sustainable manner. The g...
Article
Full-text available
The ever-increasing vehicle counts have resulted in a significant increase in air pollution impacting human and natural ecosystems including trees, and physical properties. Roadside plantations often act as a first defense line against the vehicular emissions to mitigate the impacts of pollutants. However, they are themselves vulnerable to these po...
Article
Full-text available
Biological invasion is probably one of the most serious threats to biodiversity after climate change. Landscape distinguished by the heterogeneity of structure, forms, human interferences, and environmental settings plays an important role in the establishment and spread of invasive species. We investigated the effect of the spatial heterogeneity f...
Chapter
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The array of satellite sensors deployed for Earth observation has diversified and increased rapidly in recent decades. Satellite-based remote sensing enables the synoptic, multi-temporal and systematic repeated observation at an economical cost. Remote sensing data and products for various Earth observation are now freely available from multiple so...
Article
Full-text available
Rising atmospheric carbon dioxide (CO2) and temperature alter gene-expression arrays commensurate with physio-morphological changes, resulting in issues of adaptation, growth patterns, and productivity of terrestrial vegetation. An experiment was conducted to investigate the adaptive response of Populus deltoides clone G48 to the combined effect of...
Article
Presence of tree canopy is known to strongly influence ambient temperature and other micro-climatic conditions underneath. Therefore, planting trees with close or dense crown can be used as effective measure to provide thermal cover to species of flora and fauna adapted to shady and cooler environment. The cooling produced by a tree is exclusively...
Article
Full-text available
The Himalayan ecosystem is one of the sensitive and fragile ecosystems with rich biodiversity that provides major ecosystem services. The study was conducted to measure the extent of vulnerability across forested grids of Uttarakhand—one of the States of Indian Western Himalayan (IWH) region. The forests of the state are exposed to various anthropo...
Article
Full-text available
Forests are one of the major sources of livelihood that need to be conserved. In India, there have been continuous efforts to evolve a scientific basis for sustainable management of forests. In recent century, this has primarily been addressed through “forest management plans,” also known as “working plans.” To make the plans uniform for each of th...
Article
Full-text available
The PhenoPine is a Growing Degree Day (GDD) simulation model that can be used to trace the phenology of pine (Pinus roxburghii) under changing regimes of ambient temperature rise. The PhenoPine was developed using field-based observations for pine-a dominant tree species under the "Chir Pine forests" of Indian Western Hi-malayan region. Phenologica...
Article
Full-text available
Rice cultivation is practiced in various agro-climatic zones ranging from tropical to temperate. Anthesis is a critical stage for deciding productivity which is controlled by numerous biotic and abiotic stresses. Elevated temperature is one of the key abiotic stresses that adversely modulate the pollen formation and structure, i.e., infertility, re...
Article
Climate change is a very well-known threat in today's world. The few scientific communities at worldwide stated that the future climate change scenario could influence the chemical composition, quality, and quantity of nutraceuticals derived from medicinal plants or crops. However, it is largely unclear about climate change effects on secondary che...
Article
Full-text available
The study was conducted on Endangered Pinus gerardiana (Chilgoza Pine) which has restricted distribution in India. It has been observed that the natural regeneration of the species is extremely poor or entirely lacking since the species has erratic and infrequent seed years and dormancy related problems. Therefore, different treatments viz. Mechani...
Article
Full-text available
Climate change is a very well-known threat in today's world. The few scientific communities t worldwide stated that the future climate change scenario could influence the chemical composition, quality, and quantity of nutraceuticals derived from medicinal plants or crops. However, it is largely unclear about climate change effects on secondary chem...
Conference Paper
Full-text available
Climate change impacts have become highly visible affecting different aspects of ecosystem and human society. The main factor responsible for the current pace of climate change is attributed to emission of greenhouse gases mainly CO 2 by human activities. It is believed that the aim of reducing carbon sources and increasing the carbon sink can be a...
Article
Full-text available
Trees create microclimate under their crowns in comparison to the outside ambient atmosphere, which is a result of physical as well as physiological functions of the tree. The cooling produced by trees varies with species due to variation in several anatomical, structural and physiological attributes of the species. Transpiration is one of the most...
Thesis
There is a strong association between birds and their habitats which has been established by many previous researches. This study was conducted to investigate the changes in bird community structure and composition in natural and managed forest type of Forest Research Institute’s (FRI) campus forest after 10 years of previous bird-habitat study by...
Thesis
There is a strong association between birds and their habitats which has been established by many previous researches. This study was conducted to investigate the changes in bird community structure and composition in natural and managed forest type of Forest Research Institute’s (FRI) campus forest after 10 years of previous bird-habitat study by...
Article
Full-text available
Winter cherry or Ashwagandha (Withania somnifera) is an important medicinal plant used in traditional and herbal medicine system. Yet, there is no information available on response of this plant to changing climatic conditions particularly elevated atmospheric CO2 concentrations. Therefore, we conducted an experiment to examine the effect of elevat...