Air pollution today is the most important aspect of environmental study as every progress by mankind has deteriorated the air quality. Artificial technologies have proved insufficient to address this problem. So a better and a natural way to combat the air pollution is plantation. However, all plants do not show the same response to a particular type of pollutant. Hence, all plants cannot remediate all kinds of air pollution. There are various parameters on which plant species are selected for plantation viz. APTI, API, dust accumulating potential, carbon sequestering potential etc.

North East India (NEI) has 17.2 M ha under forest cover, which is ~25% of India’s total forest area. Of the total forest cover, 1.5 M ha is currently managed by shifting cultivation in NEI. Shifting cultivation, an integral part of culture and tradition of tribes of NEI, is presently unsustainable because of the populationdriven reduction in the duration of the fallow cycle (3–5 years).

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Carbon farming describes a collection of eco-friendly techniques that have the ability to increase carbon sink into soil, i.e. carbon sequestration. Increasing C sink in the soil will help reduce the amount of CO2, CH4 and N2O emissions in the environment. Carbon farming that leads to reduction in greenhouse gas (GHG) emissions is referred to as abatement activities. It holds carbon in vegetation and soils, and reduces GHG emissions. (Correspondence)

Stoichiometric approaches have been applied to understand the relationship between soil organic matter dynamics and biological nutrient transformations. However, very few studies explicitly considered the effects of agricultural management practices on soil C : N : P ratio. The aim of this study was to assess how different input types and rates would affect the C : N : P molar ratios of bulk soil, organic matter and microbial biomass in cropped soils in the long-term.

Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types. The limited terrestrial nitrogen (N) pool in the tundra is augmented significantly by nesting seabirds, such as the planktivorous Little Auk (Alle alle). Therefore, N delivered by these birds may significantly influence the N cycling in the tundra locally and the carbon budget more globally.

Ghana’s Cocoa Eco-Project has a major outcome of increasing carbon sequestration by minimizing the emission of harmful gases on cocoa farms into the atmosphere.

Across the tropics, there is a growing financial investment in activities that aim to reduce emissions from deforestation and forest degradation, such as REDD+. However, most tropical countries lack on-the-ground capacity to conduct reliable and replicable assessments of forest carbon stocks, undermining their ability to secure long-term carbon finance for forest conservation programs. Clear guidance on how to reduce the monetary and time costs of field assessments of forest carbon can help tropical countries to overcome this capacity gap.

Physico-chemical properties of soil of two dominant forest types in Western Himalaya, viz. oak (Quercus leucotrichophora) and pine (Pinus roxburghii) across three soil depths, and winter and rainy seasons were analysed. In general, all the soil parameters, viz. soil moisture, water-holding capacity, organic carbon and total nitrogen decreased significantly with increasing soil depth in both the forests. However, pH did not show any trend with soil depth. All the soil physicochemical parameters were found significantly higher for oak forests compared to pine forests.

Tropical agroforestry has an enormous potential to sequester carbon while simultaneously producing agricultural yields and tree products. The amount of soil organic carbon (SOC) sequestered is however influenced by the type of the agroforestry system established, the soil and climatic conditions and management. In this regional scale study, we utilized a chronosequence approach to investigate how SOC stocks changed when the original forests are converted to agriculture, and then subsequently to four different agroforestry systems (AFSs): homegarden, coffee, coconut and mango.

This paper provides field experiment–based evidence on the potential additional forest carbon sequestration that cleaner and more fuel-efficient cookstoves might generate. The paper focuses on the Mirt (meaning “best”) cookstove, which is used to bake injera, the staple food in Ethiopia.

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