A sustainability assessment of a high-yield agroecosystem in Huantai County,China

Sustainable agricultural development is a perennial issue for agricultural researchers, government managers, and policy makers worldwide, but especially in developing countries. In China, farms in Shandong Province epitomize modern agriculture and play a vital role in providing food for the burgeoning population. However, Chinese agriculture is being challenged by declining resources and environmental deterioration resulting from modern farming practices. China must establish an efficient agricultural sustainability index (ASI) to evaluate agricultural conditions and offer recommendations for sustainable development. Here, we use Huantai County, Shandong Province to test a regionalscale ASI from social, economic and ecological factors that includes 11 sustainability indicators. To further evaluate the complex agroecosystem, we employed the analytic hierarchy process (AHP) and AMOEBA methods to assess agricultural sustainability from 1982 to 2003. The results show that environmental problems, especially groundwater depletion, are limiting regional sustainable development.     

Strategic Environmental Assessment and the World Bank Group

Strategic environmental assessment (SEA) is mandated by an increasing number of countries and agencies. SEA has become a reliable and useful tool in reducing environmental and social impacts of plans, policies and programmes. The main elements of SEA are outlined with examples. The status of SEA in the World Bank is discussed. The case is presented that the World Bank should apply SEA to country lending strategies, programme lending, technical assistance, and to its budget.     

Population dynamics,rural livelihoods and forest protection projects in Sub-Saharan Africa: experiences from Santa,Cameroon

The study examines mainstream efforts to rehabilitate and conserve forests in Cameroon, and concludes that technocratic blueprints will always flounder when they come face-to-face with the real world of complex human relations in poverty-stricken societies. These result from the failure to integrate concerns relating to rights, needs and priorities of rural communities, who are the local natural resource users. The paper argues that when rural livelihoods are affected negatively, the adjacent forest communities often respond in ways involving conflict, illegal exploitation of resources and apathy, which makes the realisation of conservation goals very remote. There is, therefore, need for a broader perspective that links environmental protection with human welfare. Consequently, the study advocates that Social Impact Assessment (SIA) be an integral part of such conservation projects if success is to be achieved.     

Beijing environmental sustainable development from 1983 to 2003

Ever since the Earth Summit was launched at Rio de Janeiro, research has been done on the problems of developing indices for the health of the environment and for its sustainable development. However, this research has concentrated more on national and regional levels than on local levels, more on spatial comparisons than on time series analysis, more on short-term than on long-time analysis, more on qualitative than on quantitative analysis. In contrast, therefore, this paper presents an indicator system procedure for measuring Beijing (the capital of China) environmental sustainability based on the Pressure-State-Response (PSR) philosophy, evaluates the trend of Beijing environmental sustainability index (BESI) quantitatively for 21 years, from 1983 to 2003, and suggests three great opportunities in the near future that are expected to provide some dependable information to policy makers. The results suggest that Beijing is still far from environmental sustainable development. The total trend was better in the 1980s than in the 1990s, and has improved slightly since 2000.     

Environmental and economic analysis of aluminium recycling through life cycle assessment

Aluminium is the most-used metal in the world after steel, with a wide range of applications in the industrial field owing to its physical and mechanical properties. The aim of this study was environmental and economic analysis of secondary aluminium. In particular, this study demonstrated that aluminium recycling offers many advantages to both consumers and industry:

• Increased energy savings compared to primary aluminium production;

• Recovery and reuse of raw materials for future production avoids consumption of non-renewable resources;

• Reduction in landfill waste and consequent environmental damage;

• Reduction in bauxite mining which, in turn, will reduce the socio-economic impact on populations of those countries, mainly underdeveloped, that contain mines;

• Economic advantages for Italy, the first European producer of secondary aluminium, which lacks bauxite mines and has high energy costs.

This study used the Life Cycle Assessment (LCA) method, the modified Eco-indicator 99 method for damage calculation, and the SimaPro calculation code. The study examined secondary aluminium production by ICMET, based in Reggio Emilia, Italy. The economic and environmental evaluation utilised environmental information supplied by the company.     

Eco-Environmental benefit assessment of the western route in China's South-North Water Transfer Project

Assessing the benefits of China's South-North Water Transfer project (SNWT) requires successful integration of an analysis of economic and eco-environmental benefits (EEB). To attain such integration, it is necessary to assess the EEB in detail, after the economic benefits have also been thoroughly assessed. The shadow engineering and market value methods are the major EEB assessment methods used in this study. We have assessed the EEB of the forest and grassland ecosystems in the recipient regions of the Western Route Project (WRP) for 2020, 2030 and 2050. Finally, some proposals are also made for efficient and sustainable management of the WRP.     

Life cycle assessment of the winter wheat-summer maize production system on the North China Plain

A life cycle assessment (LCA) method was used to examine the environmental impact of the winter wheat-summer maize production system on the North China Plain. The LCA considered the entire system required to produce 1 ton each of winter wheat and summer maize. The analysis included raw material extraction and transportation, agrochemical production and transportation, and arable farming in the field. First, all emissions and resource consumption connected to the different processes were listed in a life cycle inventory (LCI) and related to a common unit (1 ton of grain). Subsequently, a life cycle impact assessment (LCIA) was conducted, in which the inventory data were aggregated into indicators for environmental effects, including energy depletion, climate change, acidification, aquatic eutrophication, human toxicity, aquatic and terrestrial ecotoxicity. For winter wheat systems, energy depletion and acidification were the most relevant environmental impacts, and energy depletion and aquatic eutrophication were the primary concerns for summer maize systems. The results revealed that the most important source of environmental impact in the winter wheat-summer maize production system in Huantai County was the production and application of nitrogen fertilisers. The environmental impacts of winter wheat were much stronger than those of summer maize due to higher inputs and lower use efficiency of agrochemicals.