Check https://www.ecoseeds.com/cool.html and since you are in India, and you have that massive THAR desert, by replanting the local native plants, could you then sell carbon credits from the carbon those plants put back into the soil, that could make India become a Carbon Neutral country immediately. And at the eastern margins of that desert where farmers try and have failed to dry farm that margin, or grazing is causing the desert to move eastward, pay those farmers and grazers to replant the local native plants instead. In the USA on unirrigated grasslands, our ranchers after expenses only take home $1 per hectare per cm of rainfall.
The additional benefit, is that the covering of the land with native vegetation would increase the annual rainfall, maybe to produce a total of 50 cm to one meter, which then would benefit the remaining farmers and ranchers in the area, and more quickly get the native cover established.
For these marginal areas for dry land farming and grazing, India will need to set aside as Ecological Restoration Preserves and recover with native plants, 10 hectares for every one hectare used for farming or grazing.
That is what my website at cool.html did when Saudi Arabia adopted it 12 years ago. The Saudis have set aside 200 million acres of Ecological Restoration Preserves, and have started this year planting 10 BILLION trees for their "Saudi Green Initiative" that you can read about at the attached PDF file at https://www.ecoseeds.com/saudi-note-final.pdf
Another benefit, would be the insulating effects of the native cover, to stop the bare soil from absorbing heat, that is then radiated into the air and trapped by the CO2 and methane. You can see a picture from my cool.html website, where I measured the insulating effect of a single native grass plant in our Mojave desert, cooling the surface, and going from 128 degrees F. to only 90 deg. F.
Along with lowering our production of CO2 and methane, using native plants to produce shade will actually cool the planet about 10X faster.
Another piece of the Ecological Restoration puzzle that you can discover, is what trees that grow in the sacred forests in the Western Ghats, produce rain clouds--and then plant some upstream of the summer monsoon flow to see how they produce rainclouds downstream. These are the Pseudomonas host plants, and nobody know which ones they are.
The value of studying the revegetation of India's barren lands with native plants to produce carbon offsets, is India wants to become Carbon Neutral immediately, and in order to do that, last year bought 2 million barrels of oil from Occidental Petroleum that was already Carbon Neutral buy buying Carbon Offsets--in that way, the carbon is already sequestered before it is burned.
Instead of Occidental investing in replanting another country's forests or deserts to produce those carbon offsets, why not invest in the Ecological Restoration of the country that is buying that oil, so there is a 5X benefit--the County is immediately carbon neutral, the lands get restored, and the farmers and ranchers get more money by replanting the natives than they could ever make utilizing that marginal land for any other purposes, and the climate is cooler and produces more annual rainfall, and India becomes the first Carbon Neutral country in the world?
You have chosen an interesting and future-oriented topic for your research. As part of your preferred subject matter, I propose the following research topic: Determinants of the increase in the importance of biological regeneration of civilization degraded areas in the context of the progressing process of global warming and the negative effects of this process. As part of this topic, one can also study the growing importance of the development of sustainable organic farming as an important factor of agricultural land use change and a significant factor in reducing greenhouse gas emissions, counteracting the progressing global warming process, producing food for people with a reduced scale of environmental pollution, producing agricultural crops without contributing to the reduction of the population of bees and other pollinating insects, solving the problem of hunger in many countries with low levels of economic development. As part of this topic, the use of new information technologies, ICT and Industry 4.0, can also be considered in order to improve the techniques and monitoring of biological regeneration processes carried out in civilization degraded areas.
Ecological restoration is a wide field and can be explored from many directions- technology, biodiversity, social, economic etc. Which one do you wish to focus on?
I suggest you look at This is My Earth (https://this-is-my-earth.org/). This is a relatively young environmental organization and can be an interesting subject under many of the above venues.
I am interested in the role of restoration after a wildland fire and it's impact on invertebrates. I think this is a very interesting area of investigation, and I have a good deal of research archived on this subject that you are welcome to look at.
Hey... Try with Bioremediation and biodegradation related works using bacteria and bacterial enzymes. Do check one of my book chapters regarding that which shall give you an idea regarding. You shall also try using multiple strains of bacteria to Bioremediate or biodegrade certain pollutants. You shall approach me for any further regardings.
"Restoration after forest fires and landslide avoidance." You may use satellite images before the fire and assess the original condition. Then, with satellite images, map the burnt area, and go ahead with landslide management and restoration.
Hey... safe, resilient and decentralized energy infrastructure powered entirely by renewables...
Although considerable progress has been made to advance the cost effectiveness and the performance of renewable energy technologies, many projects still perpetuate fossil fuel energy infrastructure due to cost or regulatory barriers. In order to truly realize the social, ecological and economic benefits of clean energy.
In addition to the many valuable suggestions already shared, I would also suggest that your specific research interests in the thematic areas chosen should serve as a guide. This is a diverse theme with so many shapes and shades. You could, for example, consider taking the 'Environmental Economics' route attempting to reconcile the 'conservation' ideals of ecological restoration against the demands of addressing economic objectives that rely on the exploitation of ecosystems. What are the teething challenges of addressing both objectives concurrently?
Taking into consideration that one of the intentions of “sustainable engineering” is to create structures that validate evolution without jeopardizing the natural environment’s quality, and coming generations’ capability to meet their own necessities, modern engineering tactics concentrate (among other options) on the system design/operation in a manner that allows sustainable usage of resources. Thus, decision-making processes must be enhanced by techniques and methods which allow decision-makers to use a broad variety of sustainable alternatives.