Based on the status and characteristics of Clean Development Mechanism （CDM） renewable energy project and the mode of cyclic economy, aimed at achieving the maximum capacity of carbon sinks in the system, Lvjin Jiay...Based on the status and characteristics of Clean Development Mechanism （CDM） renewable energy project and the mode of cyclic economy, aimed at achieving the maximum capacity of carbon sinks in the system, Lvjin Jiayuan—New Countryside Distripark CDM project in Wuchuan County was taken as an example for developing an interval linear programming （ILP） model to optimize the crops planting scheme and cows breeding scheme by using interval optimal method. The case showed that the optimized crops planting scheme and cows breeding scheme obtained from the optimal model was reasonable with relatively preferable overall performance. In the context of meeting economic benefits and fertilizer, electricity demand, [231 287.8, 273 312.7] t of CO2 could be absorbed and fixed, which had increased by [12.94, 33.46]% compared with the feasibility scheme of case project and provided technical support for making the decision in CDM project.展开更多
The recent accelerated growth rates or efforts to emulate countries that have achieved a rapid pace of economic growth are widely acclaimed as means to uplift millions from poverty. In so doing, however, this rapid ec...The recent accelerated growth rates or efforts to emulate countries that have achieved a rapid pace of economic growth are widely acclaimed as means to uplift millions from poverty. In so doing, however, this rapid economic growth is most likely to coincide with unsustainable levels of consumption, place excessive pressure on life support systems and terrestrial sinks and foreshorten options for the future. Rather than pursuing the "Environmental Kuznets Curve"(EKC) hypothesis that higher income will bring with it the means to reduce the impacts of greater consumption, ecological economists assert that buying our way out of future scarcity with fast growth is indeed contradictory with sustainabil- ity. To better understand these contradictions and explore potential institutional innovations that may enable developing nations to better confront them (in effect,"tunneling under"the EKC), this article refers to recent experience in the BRICS countries (Brazil, Russia, India, China and South Africa). Beginning with a brief comparative summary of major development and environmental indicators, pressures on resources and society in each of the BRICS are discussed, followed by identification of institutional and policy frameworks each country has evolved to confront the challenges of growth and sustainability. The article closes with general conclusions for further research and information sharing among developing nations.展开更多
Brazil is one of the countries with the greatest biodiversity, being covered by diverse ecosystems. Native trees commercially planted generate numerous benefits for communities, providing cultural, recreational, touri...Brazil is one of the countries with the greatest biodiversity, being covered by diverse ecosystems. Native trees commercially planted generate numerous benefits for communities, providing cultural, recreational, tourism riches, as well as ecological benefits, such as nutrient regulation and carbon sequestration. Thus, this work aimed to generate potential distribution modeling for the Brazilian forest species, to provide information that will serve as a strategy for conservation, restoration and commercial plantation of them, that is, encouraging the use of legal native species in the forest sector. Eleven tree species and 19 bioclimatic variables were selected. The software Maxent 3.3.3 was applied in the generation of the distribution models and the area under the curve of receiver operating characteristic （AUC） was used to analyze the model. The Jackknife test contributed to identify which bioclimatic variables are most important or influential in the model. The models showed AUC values ranged from 0.857 to 0.983. The species with higher AUC values were Araucaria angustifolia, Mimosa scabrella and Euterpe edulis, respectively. The maximum temperature of warmest month showed the highest influence for the most species, followed by the mean diurnal range and annual precipitation. It was observed that for some species, there were restricted areas of environmental suitability, such as Araucaria angustifolia, Ilex paraguariensis and Mimosa scabrella. The models used could trace the potential distribution areas using the environmental variables, and these models contribute significantly to sustainable forest management.展开更多
Complex international and domestic economic scenarios and the short cyclical nature of macroeconomic policies characterizes the beginning year of the 12th Five- Year Plan period, it reflects the difficult policy choic...Complex international and domestic economic scenarios and the short cyclical nature of macroeconomic policies characterizes the beginning year of the 12th Five- Year Plan period, it reflects the difficult policy choices that arise among three major regulatory targets ,for growth, structure, and prices. In the transitional period of intertwined challenges, a spirit of commitment and dedication to real industries will allow China to occupy vantage points in world manufacturing and become an industrial power in the real sense. To a certain extent the beginning year of the 12th Five-Year Plan period （2011-2015）, while.fraught with challenges and pain, marks a departure from cutthroat competition to quality growth for Chinese enterprises and entrepreneurs. From 2012, China＇s industrial and market economic systems will both head towards more sophisticated stages of development. China ＂s industries will develop along environmentally sustainable, delicate, high-end, IT-based and service-oriented paths, while expediting the country＇s economic restructuring, industrial upgrade capabilities and its pursuit of innovative industrialization, and it will do so with strides more remarkable than ever before in its history.展开更多
文摘Based on the status and characteristics of Clean Development Mechanism （CDM） renewable energy project and the mode of cyclic economy, aimed at achieving the maximum capacity of carbon sinks in the system, Lvjin Jiayuan—New Countryside Distripark CDM project in Wuchuan County was taken as an example for developing an interval linear programming （ILP） model to optimize the crops planting scheme and cows breeding scheme by using interval optimal method. The case showed that the optimized crops planting scheme and cows breeding scheme obtained from the optimal model was reasonable with relatively preferable overall performance. In the context of meeting economic benefits and fertilizer, electricity demand, [231 287.8, 273 312.7] t of CO2 could be absorbed and fixed, which had increased by [12.94, 33.46]% compared with the feasibility scheme of case project and provided technical support for making the decision in CDM project.
文摘The recent accelerated growth rates or efforts to emulate countries that have achieved a rapid pace of economic growth are widely acclaimed as means to uplift millions from poverty. In so doing, however, this rapid economic growth is most likely to coincide with unsustainable levels of consumption, place excessive pressure on life support systems and terrestrial sinks and foreshorten options for the future. Rather than pursuing the "Environmental Kuznets Curve"(EKC) hypothesis that higher income will bring with it the means to reduce the impacts of greater consumption, ecological economists assert that buying our way out of future scarcity with fast growth is indeed contradictory with sustainabil- ity. To better understand these contradictions and explore potential institutional innovations that may enable developing nations to better confront them (in effect,"tunneling under"the EKC), this article refers to recent experience in the BRICS countries (Brazil, Russia, India, China and South Africa). Beginning with a brief comparative summary of major development and environmental indicators, pressures on resources and society in each of the BRICS are discussed, followed by identification of institutional and policy frameworks each country has evolved to confront the challenges of growth and sustainability. The article closes with general conclusions for further research and information sharing among developing nations.
文摘Brazil is one of the countries with the greatest biodiversity, being covered by diverse ecosystems. Native trees commercially planted generate numerous benefits for communities, providing cultural, recreational, tourism riches, as well as ecological benefits, such as nutrient regulation and carbon sequestration. Thus, this work aimed to generate potential distribution modeling for the Brazilian forest species, to provide information that will serve as a strategy for conservation, restoration and commercial plantation of them, that is, encouraging the use of legal native species in the forest sector. Eleven tree species and 19 bioclimatic variables were selected. The software Maxent 3.3.3 was applied in the generation of the distribution models and the area under the curve of receiver operating characteristic （AUC） was used to analyze the model. The Jackknife test contributed to identify which bioclimatic variables are most important or influential in the model. The models showed AUC values ranged from 0.857 to 0.983. The species with higher AUC values were Araucaria angustifolia, Mimosa scabrella and Euterpe edulis, respectively. The maximum temperature of warmest month showed the highest influence for the most species, followed by the mean diurnal range and annual precipitation. It was observed that for some species, there were restricted areas of environmental suitability, such as Araucaria angustifolia, Ilex paraguariensis and Mimosa scabrella. The models used could trace the potential distribution areas using the environmental variables, and these models contribute significantly to sustainable forest management.
文摘Complex international and domestic economic scenarios and the short cyclical nature of macroeconomic policies characterizes the beginning year of the 12th Five- Year Plan period, it reflects the difficult policy choices that arise among three major regulatory targets ,for growth, structure, and prices. In the transitional period of intertwined challenges, a spirit of commitment and dedication to real industries will allow China to occupy vantage points in world manufacturing and become an industrial power in the real sense. To a certain extent the beginning year of the 12th Five-Year Plan period （2011-2015）, while.fraught with challenges and pain, marks a departure from cutthroat competition to quality growth for Chinese enterprises and entrepreneurs. From 2012, China＇s industrial and market economic systems will both head towards more sophisticated stages of development. China ＂s industries will develop along environmentally sustainable, delicate, high-end, IT-based and service-oriented paths, while expediting the country＇s economic restructuring, industrial upgrade capabilities and its pursuit of innovative industrialization, and it will do so with strides more remarkable than ever before in its history.
基金the State Basic Science and Technology Key Project of China (No. 2007FY110300)the National Natural Science Foundation of China(No. 40671062)+3 种基金the Project of the Chinese Academy of Science Action-plan for West development(the Second Phase)the China Meteorological Administration Research Project on Climate Changethe Innovation Project of the Institute of Geographic SciencesNatural Resources Research,Chinese Academy of Sciences
