**1. Introduction**

The ever-increasing population growth of the world has resulted in putting more and more pressure on a piece of arable land demanding higher and higher production. The world statistics shows reduction of per capita arable land from 0.23 ha in 2000 to 0.19 ha in 2015. While the per capita arable land in North America is still 0.55 ha, the numbers for South Asia and East Asia- Pacific are 0.12 ha and 0.11 ha respectively (5–6 times lower than that of North America) [1]. The shrinkage of arable land compels the farmers to go for over dose of fertiliser application which is a main source of many kind of pollutions and emission. Food sector contributes to around quarters (26%) of the global greenhouse gas (GHG) emission out of which solely crop production practices cause **27% emission share of food sector.** The fields associated with food sector in Asian countries are also under threat as the current situation of vulnerability and their less reliance to changes are affecting their ecosystem function and services.


**Table 1.**

*Sectoral vulnerability in food, land and biodegradation in sub-continents of Asia.*

The food, biodiversity and land degradation condition in every sub-section of Asia are moderately to highly vulnerable and less resilient [2] which has a gradual effect on climate change. Before we get caught in catastrophic climate change impact, required management practices are to be adopted (**Table 1**).
