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GS Paper: GS3-18.Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

  • Understanding the importance of vultures in our ecosystem

    Context

    India lost more than 95% of its vulture population through the 1990s and by the mid-2000s. Today, the country requires urgent conservation efforts to save vultures from becoming extinct.

    About vultures

    • Vultures belong to the Accipitridae family whose members include eagles, hawks and kites.
    • They are relatively social birds with an average lifespan of 10-30 years in the wild.
    • Vultures are slow breeders and so the survival of every individual is very crucial.
    • Generally, vultures rely on other carnivores to open carcasses.
    • Their powerful bills and long slender necks are designed to help them tear off the meat chunks from inside the carcass.
    • India has nine species of vultures. Many are critically endangered.
    • Vultures have a highly acidic stomach that helps them digest rotting carcass and kill disease-causing bacteria.

    Role played by vultures in ecosystem

    • Removing vultures from the ecosystem leads to inefficient clearing of carcasses and contaminates water systems.
    • If dead animals are left to rot for long durations, it may give rise to disease-causing pathogens.
    • The animals that consume such flesh become further carriers of disease.
    • Thus, they play a crucial role in maintaining the health of the ecosystem.

    Factors responsible for decline in future population

    • India has nine species of vultures. Many are critically endangered.
    • Use of diclofenac: The main reason for the decline in the vulture population is the use of the drug, diclofenac.
    • Diclofenac, which relieves cattle of pain, is toxic to vultures even in small doses and causes kidney failure and death.
    • Hunting: Myths about the medicinal healing powers of vultures’ body parts has led to the hunting of vultures.
    • Quarrying: Quarrying and blasting of stones where vultures nest have also caused their decline.

    Steps to increase numbers

    • India banned diclofenac for veterinary use in 2006.
    • Five States are to get vulture breeding centres under the Action Plan for Vulture Conservation for 2020-2025, approved in October 2020.
    • Vulture ‘restaurants’, which exist in some countries, are also a way of preserving the population.
    •  In these ‘restaurants’, diclofenac-free carcasses of cattle are dumped in designated areas where vultures gather to feed.

    Conclusion

    Awareness and action must go hand in hand. With International Vulture Awareness Day coming up on September 4, it is important for us to spread awareness about the importance of vultures in our ecosystem.

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  • Places in news: Sambhar Lake

    The world-famous Sambhar Salt Lake in Rajasthan is constantly shrinking with the degradation of soil and water quality and a decline in the population of migratory birds.

    Sambhar Lake

    • The lake, situated 80 km south-west of Jaipur, is the country’s largest inland saline water body which attracts thousands of migratory birds every year.
    • The death of more than 20,000 birds belonging to about 10 species which migrate annually to the lake had made international headlines in 2019.
    • The lake receives water from six rivers: Mantha, Rupangarh, Khari, Khandela, Medtha and Samod.
    • Sambhar has been designated as a Ramsar site because the wetland is a key wintering area for tens of thousands of pink flamingos and other birds that migrate from northern Asia and Siberia.

    Threats: Illegal mining

    • 30% of the Sambhar Lake’s area had been lost to mining and other activities, including the illegal salt pan encroachments.
    • It has also threatened the livelihoods of local people who have always lived in harmony with the lake and its ecology.

    Try answering this:

    Which one of the following is an artificial lake? (CSP 2014)

    (a) Kodaikanal (Tamil Nadu)

    (b) Kolleru (Andhra Pradesh)

    (c) Nainital (Uttarakhand)

    (d) Renuka (Himachal Pradesh)

    [wpdiscuz-feedback id=”vm4ti120of” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

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  • SUJALAM Campaign

    The Ministry of Jal Shakti began ‘SUJALAM’, a ‘100 days campaign’ to create more and more ODF Plus villages by undertaking wastewater management at the village level.

    SUJALAM Campaign

    The key activities that will be organized in the villages under this campaign include:

    • Organizing Community consultations, Khuli Baithaks and Gram Sabha meetings to analyze the current situation
    • Pass resolution to maintain ODF sustainability and achieve a needed number of soak pits to manage the greywater
    • Develop a 100 days’ plan to undertake sustainability and soak pit construction-related activities
    • Construct a requisite number of soak pits
    • Retrofit toilets where needed through IEC and community mobilization and
    • Ensure all newly emerging Households in the village have access to toilets

    Objectives of the campaign

    • The effort of the campaign would be directed towards achieving the ODF plus status for villages across the country in an accelerated manner in a short time.
    • The campaign will not only build desired infrastructure soak pit for management of greywater in villages but will also aid in sustainable management of water bodies.
    • The disposal of wastewater and clogging of water bodies in the villages or on the outskirts of the villages remain one of the major problems.
    • The Campaign would help in the management of the wastewater and in turn, would help to revive the water bodies.

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  • [pib] Transport Initiative for Asia (TIA) Project

    NITI Aayog and World Resources Institute (WRI), India, jointly launched the ‘Forum for Decarbonizing Transport’ in India as part of the NDC-Transport Initiative for Asia (NDC-TIA).

    Transport Initiative for Asia

    • The NDC Transport Initiative for Asia (TIA 2020-2023) is a joint programme that will engage China, India, and Vietnam in promoting a comprehensive approach to decarbonizing transport in their respective countries.
    • The project is part of the International Climate Initiative (IKI).
    • NITI Aayog is the implementing partner for the India component of the project.
    • The project aims at bringing down the peak level of GHG emissions (transport sector) in Asia (in line with a well below 2-degree pathway), resulting in problems like congestion and air pollution.

    Why need such initiative?

    • India has a massive and diverse transport sector, which is also the third most CO2 emitting sector.
    • Data suggests that within the transport sector, road transport contributes to more than 90% of the total CO2 emissions.
    • The NDC-TIA India component focuses on developing a coherent strategy of effective policies and the formation of a multi-stakeholder platform for decarbonizing transport in the country.

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  • Places in news: Corbett Tiger Reserve

    The Delhi High Court has asked the National Tiger Conservation Authority (NTCA) to consider as a representation a petition to stop the alleged illegal construction of bridges and walls within the tiger breeding habitat of the Corbett Tiger Reserve.

    Jim Corbett National Park

    • Jim Corbett NP is the oldest national park in India and was established in 1936 as Hailey National Park to protect the endangered Bengal tiger.
    • It is located in Nainital district and Pauri Garhwal district of Uttarakhand and was named after hunter and naturalist Jim Corbett.
    • The park was the first to come under the Project Tiger initiative.
    • It has sub-Himalayan belt geographical and ecological characteristics.
    • Dense moist deciduous forest mainly consists of sal, haldu, peepal, rohini and mango trees.
    • Forest covers almost 73% of the park, while 10% of the area consists of grasslands.

    Try answering this PYQ:

    Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat” ? (CSP 2020)

    (a) Corbett

    (b) Ranthambore

    (c) Nagarjunasagar- Srisailam

    (d) Sunderbans

     

    [wpdiscuz-feedback id=”j0d533r4jj” question=”Please leave a feedback on this” opened=”1″]Post your answers here:[/wpdiscuz-feedback]

    Back2Basics: National Tiger Conservation Authority

    • The NTCA was established in December 2005, following a recommendation of the Tiger Task Force, constituted by the Prime Minister of India.
    • The Wildlife Protection Act of 1972 was amended in 2006 to provide for constituting NTCA responsible for the implementation of the Project Tiger plan to protect endangered tigers.
    • It works for the reorganized management of Project Tiger and the many Tiger Reserves in India.
    • A program for protection called, ‘Tiger Protection Program’ (popularly known as Project Tiger) was started in 1973, by the GOI in co-operation with WWF.

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  • Delhi’s new Smog Tower

    Ahead of its infamous smog season, Delhi has got a ‘smog tower’, a technological aid to help combat air pollution.

    What are Smog Towers?

    • Smog towers are structures designed to work as large-scale air purifiers. They are fitted with multiple layers of air filters and fans at the base to suck the air.
    • After the polluted air enters the smog tower, it is purified by the multiple layers before being re-circulated into the atmosphere.

    Structure of the Delhi smog tower

    • The structure is 24 m high, about as much as an 8-storey building — an 18-metre concrete tower, topped by a 6-metre-high canopy. At its base are 40 fans, 10 on each side.
    • Each fan can discharge 25 cubic metres per second of air, adding up to 1,000 cubic metres per second for the tower as a whole. Inside the tower in two layers are 5,000 filters.
    • The filters and fans have been imported from the United States.

    How does it work?

    • The tower uses a ‘downdraft air cleaning system’ developed by the University of Minnesota.
    • Polluted air is sucked in at a height of 24 m, and filtered air is released at the bottom of the tower, at a height of about 10 m from the ground.
    • When the fans at the bottom of the tower operate, the negative pressure created sucks in air from the top.
    • The ‘macro’ layer in the filter traps particles of 10 microns and larger, while the ‘micro’ layer filters smaller particles of around 0.3 microns.
    • The downdraft method is different from the system used in China, where a tower uses an ‘updraft’ system — air is sucked in from near the ground, and is propelled upwards by heating and convection.
    • Filtered air is released at the top of the tower.

    Likely impact

    • Computational fluid dynamics modelling suggests the tower could have an impact on the air quality up to 1 km from the tower.
    • The actual impact will also determine how the tower functions under different weather conditions, and how levels of PM2.5 vary with the flow of air.

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  • Second-generation bioethanol: It is time to launch it headlong

    India has been promoting 2G bioethanol to achieve its E20 target.

    What is Bioethanol?

    • Biomass has always been a reliable source of energy.
    • Cultivated biomass has begun to be used to generate bioethanol.
    • They are categorised as first (1G), second (2G) and third-generation (3G), based on the source of raw material used for bioethanol production.

    Its types

    • 1G bioethanol: Raw materials required are corn seeds and sugarcane; both are food sources. There is not enough food for everyone; so the use of 1G is a major concern. However, some countries have enough raw materials to manufacture 1G.
    • 2G bioethanol: It can be produced using inedible farm waste left over after harvest. Corn cobs, rice husks, wheat straw and sugarcane bagasse can all be transformed into cellulose and fermented into ethanol that can then be mixed with conventional fuels.
    • 3G bioethanol: Algae grown in wastewater, sewage or saltwater can be used to produce bioethanol. Water used for human consumption is not required. The benefit of 3G is that it does not compete with food. Nevertheless, economic viability remains a critical issue.

    Ethanol blending in India

    • India currently blends approximately 8.5 per cent ethanol with petrol.
    • It is estimated that ethanol production in India will triple to approximately 10 billion litres per year by 2025.
    • The 2G plant will play a major role in making bioethanol available for blending.
    • In addition to reducing agricultural waste incineration, it can also help meet the goal of converting waste into energy.

    Moves for production

    • The first 2G ethanol biorefinery is being set up at Bathinda, Punjab.
    • Hindustan Petroleum Corporation Ltd (HPCL) plans to set up four 2G ethanol plants that will convert agricultural waste into biofuel, reducing toxic air pollution in northern India.
    • Additionally, HPCL has plans to build four plants to produce ethanol using grains, such as surplus maize, surplus rice and damaged grain.

    Innovations in this field

    • An Indian company has filed a patent for loop reactor technology.
    • It is a long, serpentine tubular reactor, in which fermentable sugars are converted to ethanol with the help of brewer’s yeast.
    • This sparked an idea to come up with reactive pipeline technology, wherein the pipeline connects the sugar factories where the ethanol is produced to the blending depot at the closest oil manufacturing companies.
    • Reactive pipeline technology is poised to be a game-changer for sugar factories and grain-based distilleries since uninterrupted raw material supply is a major challenge.

    Benefits offered by ethanol blending

    (1) Energy security

    • The Union government has emphasized that increased use of ethanol can help reduce the oil import bill.
    • India’s net import cost stands at $551 billion in 2020-21. It is estimated that the E20 program can save the country $4 billion (Rs 30,000 crore) per annum.

    (2) Emission reduction

    • Use of ethanol-blended petrol decreases emissions such as carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx), the expert committee noted.
    • Higher reductions in CO emissions were observed with E20 fuel — 50 per cent lower in two-wheelers and 30 per cent lower in four-wheelers.

    Some issues to be addressed

    (1) Fuel efficiency

    • There is an estimated loss of six-seven per cent fuel efficiency for four-wheelers and three-four per cent for two-wheelers when using E20, the committee report noted.
    • These vehicles are originally designed for E0 and calibrated for E10.

    (2) Recalibrating engines

    • The use of E20 will require new engine specifications and changes to the fuel lines, as well as some plastic and rubber parts due to the fuel’s corrosive nature.
    • The engines, moreover, will need to be recalibrated to achieve the required power, efficiency and emission-level balance due to the lower energy density of the fuel.

    Conclusion

    • The country’s target of 20 per cent ethanol blending in petrol (E20) by 2025 can play a key role in reducing crude oil imports and bolstering India’s energy independence.
    • But India may miss an earlier goal set by him in 2015 — of reducing crude oil import dependency 10 per cent by 2022.
    • The target is far from being met and the country’s import dependency is only increasing.
    • The country’s target of 20 per cent ethanol blending in petrol (E20) by 2025 can play a key role in reducing crude oil imports and bolstering India’s energy independence.

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    Back2Basics: EBP Programme

    • Ethanol Blended Petrol (EBP) programme was launched in January 2003 for the supply of 5% ethanol blended petrol.
    • The programme sought to promote the use of alternative and environment-friendly fuels and to reduce import dependency for energy requirements.
    • OMCs are advised to continue according to priority of ethanol from 1) sugarcane juice/sugar/sugar syrup, 2) B-heavy molasses 3) C-heavy molasses and 4) damaged food grains/other sources.

  • The message from the IPCC report

    Context

    The Intergovernmental Panel on Climate Change (IPCC) recently released the Working Group I contribution to the Sixth Assessment Report (AR6). It is the first of four that the Panel will issue over the next one and a half years.

    What does the report say?

    • Global surface temperature is now higher by 1.07oC since the pre-industrial era.
    • The impact of climate change on the atmosphere, oceans and land is unmistakably of human origin and this impact is picking up pace.
    • Carbon dioxide is the dominant source of warming.
    • Aerosols contribute to reducing the impact of warming by other greenhouse gases, by almost a third.
    • Methane reduction, while needed overall, is particularly significant only as part of the endgame as the drastic reduction of aerosols actually leads to an increase in warming.
    • The report expectedly projects an increase in climate extremes due to global warming, with heatwaves, extreme rainfall events and occurrence of extreme sea levels all expected to intensify and be more frequent.
    • A major finding of the report is that air pollution reduction and steep climate change mitigation are not complementary goals but require independent efforts over the short and medium-term
    • With the inclusion of the Indian Institute of Tropical Meteorology’s Earth System Model among the climate models used in AR6, India too has joined the climate modelling fraternity.

    About the net-zero emission targets

    •  The report’s clear message is that reaching net zero was not the determining factor for the world to limit itself to a 1.5oC , or 2oC, or indeed any specific temperature increase.
    • The report is clear that it is the cumulative emissions in reaching net zero that determine the temperature rise.
    • India’s Ministry for Environment, Forest and Climate Change was quick to note this point about net zero in a statement, adding that “historical cumulative emissions are the cause of the climate crisis that the world faces today”
    • The limitations of the remaining carbon budget for 1.5oC are so stringent — a mere 500 billion tonnes of carbon dioxide for an even chance of keeping to the limit — that they cannot be met by promises of net-zero 30 years from now.
    • Equally, the disconcerting finding is that the world is set to cross the 1.5oC limit within 10-15 years.

    Implications for India

    •  India has contributed less than 5% of global cumulative emissions to date, with per capita annual emissions a third of the global average.
    • India is also the only nation among the G20 with commitments under the Paris Agreement that are even 2oC warming-compatible.
    • India needs its development space urgently to cope with the future, one where global temperature increase may be closer to 2oC.
    • Even if India completely stops its emission which is 3 billion tonnes in carbon dioxide equivalent terms, for the next 30 years, with others’ emissions remaining the same, will buy the world less than two years of additional time for meeting the Paris Agreement temperature goals.

    Way forward

    • Equity: Focusing on definite cumulative emission targets keeping equity and historical responsibility in view,
    • Immediate reduction by developed countries: Immediate emission reductions by the developed countries with phase-out dates for all fossil fuels.
    • Investment: Massive investment in new technologies and their deployment,
    • Climate finance: a serious push to the mobilisation of adequate climate finance is the need of the hour.

    Conclusion

    This is the message that the IPCC report has sent to this year’s climate summit and the world. The message is a dire warning, all the stakeholders should heed the warning.

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  • Species in news: Slender Loris

    The Kadavur hills in central Tamil Nadu’s Karur district are home to the Kadavur Reserve Forest. These forests are home to the shy and reclusive slender loris, a species of primate.

    Slender Loris

    • Slender loris (Loris tardigradus) is secretive and has nocturnal habits. It usually travels from the canopy of one tree to another. But, at times, it also comes down to bushes at the ground level to feed.
    • It is also found in the adjoining forest areas on the eastern, southern and western slopes of the Kadavur hills.
    • It sleeps by day in the foliage or in a hole or crevice. It comes out at dusk in search of prey.
    • They are fond of lantana berries and also eat insects, lizards, small birds, tree frogs, tender leaves and buds.
    • They are usually solitary but sometimes found in pairs.

    Conservation

    • The slender loris has been listed as ‘Endangered’ by the International Union for the Conservation of Nature.
    • It has been brought under Schedule I of the Wild Life (Protection) Act, 1972 in order to provide the highest level of legal protection.

    Threats

    • As it is believed that these animals have some medicinal properties, they are captured and sold.
    • Since there is great demand for keeping these animals as pets, they are illegally smuggled.
    • Habitat loss, electrocution of live wires, and road accidents are other threats that have caused its populations to dwindle.

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  • What is Gati Shakti Master Plan?

    In his I-day speech, the PM has announced a ₹100 lakh crore “Gati Shakti” infrastructure plan.

    What is Gati Shakti Master Plan?

    • The PM has pegged the project as a source of employment opportunities for the youth in the future.
    • The plan will make a foundation for holistic infrastructure and give an integrated pathway to our economy.
    • More details and the launch date of the project are awaited.

    What are the focus areas of the project?

    • The Gati Shakti plan will help raise the global profile of local manufacturers and help them compete with their counterparts worldwide.
    • It also raises possibilities of new future economic zones.
    • The PM also said that India needs to increase both manufacturing and exports.

    Why need such a plan?

    • The push for infrastructure is in line with the government’s efforts to step up capital expenditure in infrastructure to promote economic growth.
    • Infrastructure development has the ability to create a multiplier effect with every rupee invested, yielding much higher returns.

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    Back2Basics:

    National Infrastructure Pipeline (NIP)