Healthy land ecosystems are essential to sustainable development, including food security and improved livelihoods. Yet, their key services have usually been taken for granted and their true value underrated, leading to land degradation becoming a critical global problem. This pattern of undervaluation of lands is about to change in view of the rapidly rising land prices, which is the result of increasing shortage of land and high output prices. Despite the urgent need for preventing and reversing land degradation, the problem has yet to be appropriately addressed. Policy actions for sustainable land management are lacking, and a policy framework for action is missing. Such a framework for policy action needs to be supported by evidence-based and action-oriented research. The Economics of Land Degradation (ELD) initiative seeks to develop such a science basis for policy actions to address land degradation.
Through this paper, the author builds an equilibrium search and matching model of an economy with an informal sector and rural-urban migration to analyze the effects of budget-neutral green tax policy (raising pollution taxes, while cutting payroll taxes) on the labour market.
The key results of the paper suggest that when general public spending varies endogenously in response to tax reform and higher energy taxes can reduce the income from self-employed work in the informal sector, green tax policy can produce a triple dividend: a cleaner environment, lower unemployment rate and high after-tax income of the private sector. This is due to the ability of the government, by employing public spending as an additional policy instrument, to reduce the overall tax burden when an increase in energy tax rates does not exceed somr threshold level. Thus governments should employ several instruments if they are concerned with labour market implications of green tax policies.
Cities concentrate a large part of the world economy today. Understanding how the urban economy and its decision making function as well as how they are connected to a larger world (regional, national, global) is fundamental to create governance mechanisms and the institutions to move the world towards a green economy. This paper analyses the city through its key economic processes of the transformation of space; circulation (transport); consumption and production and social, knowledge and ecosystem services. Transforming urban processes will only be achieved with better urban governance. As governance is embedded in institutions, it is the foundation for building the legitimate political and social mechanisms to green socio-ecological and economic systems. Yet the question of whether or not current governance systems in these processes are steering cities towards a greener economy, or if they are, how are they affecting people and ecosystems is yet to be addressed.
This empirical paper focuses on the relationship between changes in GDP and CO2 emissions as a country's economy moves through periods of growth and decline. Using a comprehensive panel, the author documents substantial heterogeneity in the relationship across countries. Specifically, countries can be classified into one of the following groups: Group D (for decline) includes countries where the emissions growth rate is more strongly associated with the GDP growth rate in periods of GDP decline than in periods of GDP growth. Group G (for growth) includes countries where the degree of association is stronger in perods of GDP growth. Finally in Group D (for symmetrical) it is not possible to reject the hypothesis that the relationship is the same for growth and decline. According to a simple count criterion, approximately a third of the countries in the sample fall into each group. Notably China and the US, currently the world's largest emitters by a substantial margin, are in group D. These results have potentially important consequences for long-term emissions projections.