Responses Of Soil Parameters In The Terrestrial Ecosystem Due To Nitrogen (N) Enrichment: A Mini Review

Abstract

In the existing age, Human-induced reactive Nitrogen (Nr) deposition is the major source of N in the
terrestrial ecosystem. Reactive N plays an important role in global climate change through altered ecosystem
processes, including acidification, mineralization, leaching of base cations, metal toxicity, microbial
properties, altered species composition and diversity. These modifications impose a great threat to plants,
microbes, human health and other living organisms. Current understanding on Nr deposition and its impact
on natural ecosystem processes and properties basically depends on the simulated and observational N
deposition studies. However, our understanding of the mechanisms, which regulate the response of soil
parameters under N enrichment are still limited. Interaction among various parameters could play significant
role in regulation of ecosystem properties and processes under N deposition. However, most of the studies
have focused on the separate responses of soil pH, mineral-N availability and base cations under Nenrichment, which do not provide mechanistic understanding regarding change in soil parameters. Till date
very few studies have been performed the simultaneous responses of soil pH, mineral-N availability and base
cations under N-enrichment. In this review we have summarized the effect of N-input on soil pH, mineral-N
and base cations, with other interactive parameters. The study also emphasizes on interactive study of soil
parameters under N-input for better apprehension of mechanism responsible for the change in soil properties
and processes.