Search

Your search keyword '"Kumar NKRK"' showing total 2 results
Start Over "Kumar NKRK"
2 results on '"Kumar NKRK"'

1. Quantitative assessment of sediment delivery and retention in four watersheds in the Godavari River Basin, India, using InVEST model - an aquatic ecosystem services perspective.

Author

Kantharajan G, Govindakrishnan PM, Singh RK, Natalia EC, Jones SK, Singh A, Mohindra V, Kumar NKRK, Rana JC, Jena JK, and Lal KK

Subjects
Rivers, Soil, India, Conservation of Natural Resources methods, Ecosystem, Environmental Monitoring methods
Abstract

Sediment export and retention are important ecosystem processes in any landscape causing soil erosion and sediment loading in waterways consequently affecting the health of aquatic habitats downstream. The present study quantifies sediment export and retention in four watersheds, viz., Hivra, Satrapur, Konta, and Jagdalpur in the Godavari River Basin, India, using Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) ecosystem service modelling tool. The  results revealed that the sediment export yields ranged from 0.75 (Hivra) to 2.77 t/ha/year (Jagdalpur). The mean deviation between modelled values and observed sediment export yield was - 11.11%, which indicated good prediction by the model. The sediment retention ranged from 16.04 (Hivra) to 101.52 t/ha/year (Konta). Most sediment export and retention occurred on cropland or shrubland land use land cover types in all four watersheds. For decision making on soil conservation, soil loss tolerance limits have been established for these watersheds. For aquatic habitats, sediment concentration is considered more important than the total annual sediment export, since water turbidity is an important determinant of water quality, and the aquatic lives therein. Therefore, the temporal distribution of rainfall and corresponding sediment export becomes important, since these two factors determine the sediment concentration as well as turbidity in the waterbody. In current study, "Precipitation Concentration Index adjusted Sediment Export Yield Index" was developed to account for the effects of the temporal rainfall distribution and its impact on sediment export. The index for four watersheds was quantified (Hivra > Satrapur > Konta > Jagdalpur), which is concordant to the turbidity values reported by respective gauge stations. Thus, the proposed index can efficiently capture the impact of temporal rainfall distribution on sediment export, and consequently its effect on water turbidity. The study revealed the potential of InVEST model to quantify the sediment export and retention in the watersheds studied. Together with the proposed index, it would help the policy makers in making informed decisions for planning conservation strategies for aquatic biodiversity., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Published
2023
Full Text
View/download PDF

2. Ecological Impacts of Stone Mining : Assessment and Restoration of Soil, Water, Air and Flora

Author

Gulshan Kumar Sharma, I. Rashmi, Shakir Ali, S. Kala, Ashok Kumar, M. Madhu, Gulshan Kumar Sharma, I. Rashmi, Shakir Ali, S. Kala, Ashok Kumar, and M. Madhu

Subjects
Rocks, Mines and mineral resources, Mineral industries--Environmental aspects
Abstract

This edited book covers the impact of stone mining activities on soil, water, air, agriculture, vegetation, and policy aspects. It provides information on rehabilitation and restoration measures for stone mine spoil areas and other associated adverse impacts on human health caused by mining activities. Additionally, the book covers information related to the impact of stone mining on the socio-economic conditions of mining area inhabitants and appropriate government policies and support to meet the United Nations Sustainable Development Goals-15.3 (SDG-15.3) for degraded stone mine spoil sites toward Land Degradation Neutrality (LDN). The dumping of stone mine waste has many negative implications for the environment, soil, and natural resources. Although stone mining is the main source of livelihood for millions of people around the world and plays a crucial role in the economic development of many countries, it was estimated that nearly 4 million people die every year, especially in developing countries, due to environmental pollution from quarrying, sandblasting, and the emission of toxic gases. Mining leads to land degradation by the stacking of mine waste, loss of fertile topsoil and vegetation covers, abstraction and deterioration of the natural drainage system, deforestation, groundwater depletion, loss of plant and aquatic biodiversity, and public health issues. The book covers information about all aspects of dimensional stone mining activity and is a useful read for researchers, planners, capacity builders, scientists, and policymakers for achieving SDG 15.3. It would also be helpful for undergraduate and graduate students of agriculture, forestry, ecology, soil science, and environmental science disciplines.

Published
2024

Catalog

Books, media, physical & digital resources
See catalog results