Deltas around the globe are facing a multitude of intensifying environmental change and development-linked pressures. One key concern is the reduction in the quantity of suspended sediment reaching and building floodplains. Sediment deposition provides multiple services to deltaic social-ecological systems, in particular, countering the subsidence of the delta-body, and providing plentiful nutrients. Experiencing particularly rapid change is the Vietnamese Mekong Delta (VMD).

River health assessment (RHA) protocols are the tools used globally that emphasize upon factors which contribute for ecological fitness of the river such as catchment health, floodplain health, channel health, flow health, quality health and biotic health indicators. Human intervention by constructions of dams, excess water abstraction, channel diversion and several other factors contribute to the depletion of diverse flora and fauna of a river.

Corporations and other multinational institutions are increasingly looking to evaluate their innovation and procurement decisions over a range of environmental criteria, including impacts on ecosystem services according to the spatial configuration of activities on the landscape. We have developed a spatially explicit approach and modeled a hypothetical corporate supply chain decision representing contrasting patterns of land-use change in four regions of the globe.

To promote sustainable sand extraction, these guidelines released by the Union ministry of environment and forests lays emphasis on monitoring of the mined out material, which is key to the success of environment management plan. It has suggested tapping “alternative sources of sand and gravel”.

Glacial erosion is fundamental to our understanding of the role of Cenozoic-era climate change in the development of topography worldwide, yet the factors that control the rate of erosion by ice remain poorly understood. In many tectonically active mountain ranges, glaciers have been inferred to be highly erosive, and conditions of glaciation are used to explain both the marked relief typical of alpine settings and the limit on mountain heights above the snowline, that is, the glacial buzzsaw.

This guideline provides criteria for sustainable sand mining both in-stream and off-channel extraction of sand, the theory of sediment transport in rivers, an important factors determining sand replenishment rate together with a discussion of the impacts of river sand mining.

Measurements of sediments eroded by the Mackenzie River reveal the widespread export of permafrost-derived biospheric carbon that is several thousand years old, and demonstrate its burial in the Arctic Ocean, suggesting that high-latitude rivers can act as important carbon dioxide sinks.

The Ganges–Brahmaputra river delta, with 170 million people and a vast, low-lying coastal plain, is perceived to be at great risk of increased flooding and submergence from sea-level rise. However, human alteration of the landscape can create similar risks to sea-level rise. Here, we report that islands in southwest Bangladesh, enclosed by embankments in the 1960s, have lost 1.0–1.5 m of elevation, whereas the neighbouring Sundarban mangrove forest has remained comparatively stable.

Majuli, one of the largest inhabited river islands in the world, is under serious threat due to large-scale bank erosion by the Brahmaputra River. There is urgent need to preserve this socio-culturally rich island of over 0.2 million people. Erosions have been shrinking its landmass significantly and thereby causing enormous pressure on its ecosystem. Through this study, an attempt has been made to assess the effect of flood and erosion on the island, its nature, habitats and eco-system. Survey maps and satellite data are considered as major inputs to this study.

Question raised in Rajya Sabha on review of Sethusamudram Shipping Canal Project 01/12/2014.