Ayush Varun

Ayush Varun

*This is an algorithmically generated author record based on publicly available information.

Current Organizations / Institutes

The organizations/institutes from the scholar's latest article


Ayush Varun has a total of 25 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Fluvial morphodynamics and channel-floodplain interactions of the river Ganga

    by Netrananda Sahu, Ayush Varun, Suraj Kumar Mallick, Pritiranjan Das, Xiaojun Wang, Atul Saini, Ravi Kesharwani, Anil Kumar, Martand Mani Mishra, Arpita Panda, et al.

  • Open Access

    Empowering Urban Women Street Vendors Through the Impact of Digital Payments: An Empirical Investigation in the Megacity of Delhi

    by Gayatri Mallick, Sonia Singla, Suraj Kumar Mallick, Netrananda Sahu, Martand Mani Mishra, Ayush Varun

    This article investigates whether increasing economic status through adopting digital payment capabilities in Delhi fosters economic and financial inclusion among urban women street vendors in Mahila Haat. Digital freedom is a new step forward in technology for everyone. Still, a woman not only balances the social responsibilities of childbearing, caring for her children and family, and struggling with economic issues, health issues, and undernourishment, but can also balance the household job of street vending to increase self-esteem and financial independence. This research work conducted a sampling survey and applied the Kruskal–Wallis H-test with a p-value (0.05) significance level by evaluating 11 variables to investigate the relationship between the digital capabilities and economic independence of street vendors in Mahila Haat (a women’s market where the vendors are all women) in the Red Fort area of New Delhi. UPI systems were created using measurements based on a five-point Likert scale to analyze different levels of satisfaction in clusters of digital capabilities on digital platforms. Further, the ordinary least squares (OLS) method was used to estimate quality of life and social happiness in the context of digital empowerment. Digital payment systems positively influence women’s empowerment. Women vendors can adopt digital payment methods, making them economically independent. The positive relationship between women vendors and customer satisfaction before UPI use and after UPI use is also analyzed. This research will be helpful for both government and non-government organizations to provide financial assistance, informational awareness, skill development training, and advocacy for gender equality to increase women’s empowerment.


  • Climate change impacts on vegetation dynamics and transhumant pastoralism in the Western Himalayas

    by Netrananda Sahu, Ravi Kesharwani, Yogeshwar Singh Rathore, Anil Kumar, Ayush Varun, Martand Mani Mishra, Pritiranjan Das, Basanta K. Das, Suraj Kumar Mallick

    Mountain pastoral livelihoods in the Western Himalaya face compounded pressures from warming, shifting rainfall, and the spread of invasive alien plant species (IAPS), yet integrated evidence linking climate dynamics, vegetation change, and livelihood outcomes remains limited. This study examines how long-term climate trends, IAPS, and shifting livelihood conditions interact along the elevational migration routes of the Bakkarwal pastoralists (BPs) in Jammu and Kashmir, India. We integrate 42 years of gridded daily climate records (1980–2021) with focus group discussions (FGDs) and a structured questionnaire (n = 80) to assess climate variability, perceived vegetation change, and livelihood impacts. The results show that temperatures have risen (~ 0.85 °C daytime, ~ 0.70 °C nighttime) significantly in low and high-elevation districts, with stronger post-2000 signals and greater high-elevation sensitivity, while rainfall has redistributed seasonally rather than showing a uniform trend. Field and survey evidence point to the upslope spread of IAPS (Lantana camara, Parthenium hysterophorus, and Ageratum conyzoides) displacing the native fodder and increased overbrowsing pressure on remaining shrubs and trees. Exploratory factor analysis (EFA) of perception data identified latent dimensions of the vegetation and livelihood factors improving the interpretability of the observed dataset. These dimensions reveal how climate-induced vegetation dynamics interact with socio-economic changes such as youth’s preference for education and salaried jobs, policies that impact grazing access, and changes in herding and migration routines which are altering social relationships, reducing the intergenerational knowledge transfer, and gradually reshaping the cultural values that have long supported Bakkarwal pastoralism. The overall findings envisage that developing the resilience in their socio-ecological system will be subject to how they cope with the upcoming climatic risk, IAPS preservation, restoration of critical forage sites, and community-based social policies that support ease and conspicuous livelihood transitions for the BPs.

  • Spatiotemporal dynamics of rice cultivation in India

    by Netrananda Sahu, Ravi Kesharwani, Pritiranjan Das, Anil Kumar, Ayush Varun, Atul Saini, Suraj Kumar Mallick, Martand Mani Mishra


  • Open Access

    Impact of Changes in Rainfall and Temperature on Production of Darjeeling Tea in India

    by Netrananda Sahu, Rajiv Nayan, Arpita Panda, Ayush Varun, Ravi Kesharwani, Pritiranjan Das, Anil Kumar, Suraj Kumar Mallick, Martand Mani Mishra, Atul Saini, et al.

    Globally, there has been a lot of focus on climate variability, especially variability in annual precipitation and temperatures. Depending on the area, different climate variables have different degrees of variation. Therefore, analyzing the temporal and spatial changes or dynamics of meteorological or climatic variables in light of climate change is crucial to identifying the changes induced by climate and providing workable adaptation solutions. This study examined how climate variability affects tea production in Darjeeling, West Bengal, India. It also looked at trends in temperature and rainfall between 1991 and 2023. In order to identify significant trends in these climatic factors and their relationship to tea productivity, the study used a variety of statistical tests, including the Sen’s Slope Estimator test, the Mann–Kendall’s test, and regression tests. The study revealed a positive growth trend in rainfall (Sen’s slope = 0.25, p = 0.001, R2 = 0.032), maximum temperature (Sen’s slope = 1.02, p = 0.026, R2 = 0.095), and minimum temperature (Sen’s slope = 4.38, p = 0.006, R2 = 0.556). Even with the rise in rainfall, there has been a decline in tea productivity, as seen by the sharp decline in both the tea cultivated area and the production of tea. The results obtained from the regression analysis showed an inverse relationship between temperature anomalies and tea yield (R = −0.45, p = 0.02, R2 = 0.49), indicating that the growing temperatures were not favorable for the production of tea. Rainfall anomalies, on the other hand, positively correlated with tea yield (R = 0.56, p = 0.01, R2 = 0.68), demonstrating that fluctuations in rainfall have the potential to affect production but not enough to offset the detrimental effects of rising temperatures. These results underline how susceptible the tea sector in Darjeeling is to climate change adversities and the necessity of adopting adaptive methods to lessen these negative consequences. The results carry significance not only for regional stakeholders but also for the global tea industry, which encounters comparable obstacles in other areas.


  • Open Access

    Analysis of Tea Plantation Suitability Using Geostatistical and Machine Learning Techniques: A Case of Darjeeling Himalaya, India

    by Netrananda Sahu, Pritiranjan Das, Atul Saini, Ayush Varun, Suraj Kumar Mallick, Rajiv Nayan, S. P. Aggarwal, Balaram Pani, Ravi Kesharwani, Anil Kumar

    This study aimed to identify suitable sites for tea cultivation using both random forest and logistic regression models. The study utilized 2770 sample points to map the tea plantation suitability zones (TPSZs), considering 12 important conditioning factors, such as temperature, rainfall, elevation, slope, soil depth, soil drainability, soil electrical conductivity, base saturation, soil texture, soil pH, the normalized difference vegetation index (NDVI), and land use land cover (LULC). The data were normalized using ArcGIS 10.2 and the models were calibrated using 70% of the total data, while the remaining 30% of the data were used for validation. The final TPSZ map was classified into four different categories: highly suitable zones, moderately suitable zones, marginally suitable zones, and not-suitable zones. The study revealed that the random forest (RF) model was more precise than the logistic regression model, with areas under the curve (AUCs) of 85.2% and 83.3%, respectively. The results indicated that well-drained soil with a pH range between 5.6 and 6.0 is ideal for tea farming, highlighting the importance of climate and soil properties in tea cultivation. Furthermore, the study emphasized the need to balance economic and environmental considerations when considering tea plantation expansion. The findings of this study provide important insights into tea cultivation site selection and can aid tea farmers, policymakers, and other stakeholders in making informed decisions regarding tea plantation expansion.