Regional water safety systems are affected by social, economic, ecological, hydrological and other factors, and their effects are complicated and variable. Studying water safety systems is crucial to promoting the coordinated development of regional water safety systems and anthropogenic processes. Thus, a similarity cloud model is developed to simulate the evolution mechanisms of fuzzy and complex regional systems of water security and overcome the uncertainty that is associated with the indices that are used in water safety index systems. This cloud generator is used to reciprocally transform a qualitative cloud image with a quantitative cloud characteristic value, and the stochastic weight assignment method is used to determine the weight of the evaluation indices. The results of case studies show that Jiansanjiang's water safety systems were in a safe state in 2002–2011, but the water safety systems in the arid area of Yinchuan City were in a dangerous state in 2006–2007 because of climate factors and a lack of effective water and soil resource protection. The experimental results are consistent with the research subjects' actual situations, and the proposed model provides a tool for decision makers to better understand the security issues that are associated with regional water safety systems.
New York Times: Can Dirt Save the Earth?
“To prevent carbon from causing misery and destruction, perhaps we just need to change its location. Perhaps we can find a way to pull it from the air and restore it to the earth,” writes the New York Times in a new article that features the research of SOIL’s longtime collaborator, Dr. Rebecca Ryals. The article documents recent groundbreaking studies into how improving the health of soil through compost amendments may be one of the most promising tools we may have at our disposal to combat...
A small slurry plant in Italy – ecologically useful and profitable - Case Study
Location: Casaletto Ceredano, Lombardei/ItalyCapacity: 249 kWelInput Materials: Pig slurry, maize mealFeatures: The power is fed into the public grid. The heat generated is used for heating the fermenter.The biogas plant in Casaletto Ceredano (Italy)A cutting-edge plant powered only by slurry The plant owned by the management company Pozzali Società Agricola s.r.l. is the second of EnviTec’s plants in Italy. It became operational in October 2010. The plant, which uses cutting-edge technology,...
Agro-ecological compensation of watershed based on emergy
The paper aims at providing a framework to calculate the agro-eco-compensation standard based on the systems agro-ecological concept of embodied energy as emergy. We have proposed a calculation system of eco-compensation standard for sustainable agricultural development based on the convertibility between emergy and price. According to our calculation, the total energy of agricultural production in Yongding River Basin was 3.45 E + 16 Sej/ha (the unit emergy value, expressed in solar emergy joules per unit) in...
`Standards are desperately needed for plastic and pesticide contamination in soil´
In addition to plastic in the oceans, plastic contamination in arable land throughout Europe and other parts of the world is a growing problem. No standards exist for these types of soil pollutants, nor for pesticide residues or their degradation products. For this reason, Professor Violette Geissen is calling for standards to be implemented. On 15 June, Geissen will deliver her inaugural address as professor holding a personal chair at Wageningen University & Research. Plastic covers are used in agriculture...
Climate and Economic Benefits of Agroforestry Systems
Introduction Agriculture is well known as a significant contributor to global greenhouse gas emissions, but emerging practices in land management have the potential to curtail these emissions and reverse much of the ecological and climate harm caused by overly intensive systems. One such practice, cultivation and conservation of trees in agricultural practices, or agroforestry, is an important climate-smart solution with many important co-benefits. There are a range of practices, that can be used for...