No abstract

Climate change is widely acknowledged as a serious threat to global development, and Bangladesh is no exception; without a doubt, global warming has placed Bangladesh among the most vulnerable countries. The motivation behind this paper is to examine the effects of climate change by taking into account the changes in temperature and precipitation over time. This paper first evaluates the climate change impact on crop production by using a crop modeling framework and then constructs a dynamic computable general equilibrium (CGE) model. The result of this study finds that average gross domestic product (GDP) decreases by −6.17% and investment declines by −7.76% due to the climate change impact. The impacts of climate change on rice sectors were felt more intensely, increasing prices by 5.82 and 8.11%, reducing output by −3.08 and −3.7% collectively in 2030 and 2050. The agricultural sectors’ output declined more compared to the manufacturing, mining and gas, construction, service and transportation sectors, which indicates declines in agricultural labor and household income. In conclusion, climate change impact by analyzing the computable general equilibrium model in Bangladesh had paid little attention in the past and this paper tried to fill the gaps and provide policy-makers with crucial information and guide government policies.

The primary goal of Chinese agricultural development is to guarantee national food security and the supply of major agricultural products. Hence, the improvement of agricultural technology plays a vital role in China for economic development. Technological change in agricultural sector results in higher future economic growth as well as food security, both in food consumption and availability. By constructing China’s agriculture general equilibrium model (CGE), this paper explains the impact of agricultural technology change. This paper constructs a dynamic CGE model based on CHINAGEM model for analyzing the technology increase in China Agricultural sector and then describes the construction of database and policy scenario. Model such as Computable General Equilibrium (CGE) model is used to conduct analysis of the economy-wide impacts of new agricultural technologies in China. In the general equilibrium model, some external variables are established; any part of structural changes caused by its exogenous variables can affect the entire system, resulting in general changes of goods, prices and quantity of factor. Simulation result of this paper indicates the agriculture sector output increases respectively; employment decreases; production cost decreases; and investment increases. Finally this paper describes the effects of the policy of technology changes by comparing policy scenario to baseline scenario and explains the impact of technology changes in China economy using CHINAGEM model.