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Nan Xiang
School of Management, University of Chinese Academy of Sciences, Beijing 100190, China

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Journal article
Published: 01 January 2015 in Environmental Engineering and Management Journal
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Recently, various environmental problems have been introduced with the rapid economic development and population growth in China. It is important to enforce optimal environmental policies to achieve economic development along with environmental improvements. In this study, we selected the city of Jiaxing for our research area due to its high water pollution and its fasteconomic growth, and we constructed a comprehensive environmental policy evaluation model to elucidate the optimal development proposals for local sustainable development. The optimization simulation model includes a water pollutant reduction model and a socioeconomic model; it can evaluate the feasibility and efficiency of the environmental policies based on the consideration of environmental preservation and economic development. Established using dynamic programming in LINGO, simulation results proved that a comprehensive environmental policy with biomass plant construction is the best choice to achieve the research targets. This study can provide information like specific policy initiatives to improve the trade-off between environment and economic in Jiaxing city, China.

ACS Style

Feng Xu; Nan Xiang; Yoshiro Higano. COMPREHENSIVE EVALUATION OF ENVIRONMENTAL POLICIES FOR SUSTAINABLE DEVELOPMENT IN JIAXING CITY, CHINA. Environmental Engineering and Management Journal 2015, 14, 1079 -1088.

AMA Style

Feng Xu, Nan Xiang, Yoshiro Higano. COMPREHENSIVE EVALUATION OF ENVIRONMENTAL POLICIES FOR SUSTAINABLE DEVELOPMENT IN JIAXING CITY, CHINA. Environmental Engineering and Management Journal. 2015; 14 (5):1079-1088.

Chicago/Turabian Style

Feng Xu; Nan Xiang; Yoshiro Higano. 2015. "COMPREHENSIVE EVALUATION OF ENVIRONMENTAL POLICIES FOR SUSTAINABLE DEVELOPMENT IN JIAXING CITY, CHINA." Environmental Engineering and Management Journal 14, no. 5: 1079-1088.

Journal article
Published: 18 November 2014 in Sustainability
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The stockbreeding industry is growing rapidly in rural regions of China, carrying a high risk to the water environment due to the emission of huge amounts of pollutants in terms of COD, T-N and T-P to rivers. On the other hand, as a typical biomass resource, stockbreeding waste can be used as a clean energy source by biomass utilization technologies. In this paper, we constructed a dynamic linear optimization model to simulate the synthetic water environment management policies which includes both the water environment system and social-economic situational changes over 10 years. Based on the simulation, the model can precisely estimate trends of water quality, production of stockbreeding biomass energy and economic development under certain restrictions of the water environment. We examined seven towns of Shunyi district of Beijing as the target area to analyse synthetic water environment management policies by computer simulation based on the effective utilization of stockbreeding biomass resources to improve water quality and realize sustainable development. The purpose of our research is to establish an effective utilization method of biomass resources incorporating water environment preservation, resource reutilization and economic development, and finally realize the sustainable development of the society.

ACS Style

Jingjing Yan; Jinghua Sha; Xiao Chu; Feng Xu; Nan Xiang. Dynamic Evaluation of Water Quality Improvement Based on Effective Utilization of Stockbreeding Biomass Resource. Sustainability 2014, 6, 8218 -8236.

AMA Style

Jingjing Yan, Jinghua Sha, Xiao Chu, Feng Xu, Nan Xiang. Dynamic Evaluation of Water Quality Improvement Based on Effective Utilization of Stockbreeding Biomass Resource. Sustainability. 2014; 6 (11):8218-8236.

Chicago/Turabian Style

Jingjing Yan; Jinghua Sha; Xiao Chu; Feng Xu; Nan Xiang. 2014. "Dynamic Evaluation of Water Quality Improvement Based on Effective Utilization of Stockbreeding Biomass Resource." Sustainability 6, no. 11: 8218-8236.

Journal article
Published: 21 October 2014 in Water Policy
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Tianjin City in China is a typical area that suffers from a serious water resource shortage and pollution problems, and this situation has spurred the use of reclaimed water as an additional source of water and an efficient method of improving water quality. This study aims to assess the reclaimed water utilisation amount available and its potential impacts on the water environment and economy, and proposes applicable approaches to establish the optimal development for Tianjin. A water resources-environment-economic management model was constructed, which was accomplished by dynamic linear optimisation. Through scenario analysis, Tianjin's optimal reclaimed water recycle rate can reach 56%, with 475 × 106 tons of reclaimed water amount available (supporting 22% of the water supply), while bringing sufficient environmental and economic benefits, such as reducing 20% of water pollutants and maintaining 6.3% annual economic growth by 2020. This research also suggests that an integrated water management approach is preferable, including a proper introduction of technologies suited to the region's needs, a support system for construction, and control of water pollutant emission sources, especially in agriculture. The originally formulated water management system can be easily applied and extended to solve water issues, especially for water recycling.

ACS Style

Nan Xiang; Feng Xu; Min-Jun Shi; Ding-Yang Zhou. Assessing the potential of using water reclamation to improve the water environment and economy: scenario analysis of Tianjin, China. Water Policy 2014, 17, 391 -408.

AMA Style

Nan Xiang, Feng Xu, Min-Jun Shi, Ding-Yang Zhou. Assessing the potential of using water reclamation to improve the water environment and economy: scenario analysis of Tianjin, China. Water Policy. 2014; 17 (3):391-408.

Chicago/Turabian Style

Nan Xiang; Feng Xu; Min-Jun Shi; Ding-Yang Zhou. 2014. "Assessing the potential of using water reclamation to improve the water environment and economy: scenario analysis of Tianjin, China." Water Policy 17, no. 3: 391-408.

Journal article
Published: 17 July 2014 in Letters in Spatial and Resource Sciences
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Along with the rapid economic development of China, carbon dioxide (CO \(_{2}\) ) emissions will inevitable rise in the future. This will happen even though the Chinese government has made a series of attempts to constrain the CO \(_{2}\) -emissions, and is committed to reduce its CO \(_{2}\) -emissions per unit of gross domestic product (GDP) by 40–45 % (1,045–1,140 tons/million dollars) by 2020 from 2005 levels. However, according to estimates the total amount of CO \(_{2}\) -emissions will grow to more than 13 billion tons, and the carbon intensity will be twice of the world average. In order to improve this situation, this research study will construct a comprehensive dynamic simulation model to forecast China’s CO \(_{2}\) -emissions and GDP development under different energy structure adjustment plans and carbon intensity constraints from 2008 to 2020. In addition, find out the trade-off between Chinese carbon intensity reduction and economic development. The comprehensive model we constructed includes a CO \(_{2}\) -emissions model, an energy balance model, and a socio-economic model. Through a dynamic simulation analysis established by LINGO programming, this study provides the proper carbon intensity that China can achieve under the current situation, lie 1,040 tons/million dollars in 2020 (a 45 % reduction compared with the situation in 2005), while the CO \(_{2}\) -emissions will be 12.51 billion tons, the proportion of non-fossil energy 15 %, and the average annual increase in GDP 9 %. This research provides an effective method to estimate the interaction between economic growth and CO \(_{2}\) -emissions reduction, with alternative energy utilization in the future.

ACS Style

Feng Xu; Nan Xiang; Jingjing Yan; Lujun Chen; Peter Nijkamp; Yoshiro Higano. Dynamic simulation of China’s carbon emission reduction potential by 2020. Letters in Spatial and Resource Sciences 2014, 8, 15 -27.

AMA Style

Feng Xu, Nan Xiang, Jingjing Yan, Lujun Chen, Peter Nijkamp, Yoshiro Higano. Dynamic simulation of China’s carbon emission reduction potential by 2020. Letters in Spatial and Resource Sciences. 2014; 8 (1):15-27.

Chicago/Turabian Style

Feng Xu; Nan Xiang; Jingjing Yan; Lujun Chen; Peter Nijkamp; Yoshiro Higano. 2014. "Dynamic simulation of China’s carbon emission reduction potential by 2020." Letters in Spatial and Resource Sciences 8, no. 1: 15-27.

Journal article
Published: 28 November 2013 in Sustainability
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To achieve a low-carbon economy, China has committed to reducing its carbon dioxide (CO2) emissions per unit of gross domestic product (GDP) by 40%–45% by 2020 from 2005 levels and increasing the share of non-fossil fuels in primary energy consumption to approximately 15%. It is necessary to investigate whether this plan is suitable and how this target may be reached. This paper verifies the feasibility of achieving the CO2 emission targets by energy and industrial structure adjustments, and proposes applicable measures for further sustainable development by 2020 through comprehensive simulation. The simulation model comprises three sub-models: an energy flow balance model, a CO2 emission model, and a socio-economic model. The model is constructed based on input-output table and three balances (material, value, and energy flow balance), and it is written in LINGO, a linear dynamic programming language. The simulation results suggest that China’s carbon intensity reduction promise can be realized and even surpassed to 50% and that economic development (annual 10% GDP growth rate) can be achieved if energy and industrial structure are adjusted properly by 2020. However, the total amount of CO2 emission will reach a relatively high level—13.68 billion tons—which calls for further sound approaches to realize a low carbon economy, such as energy utilization efficiency improvement, technology innovation, and non-fossil energy’s utilization.

ACS Style

Nan Xiang; Feng Xu; Jinghua Sha. Simulation Analysis of China’s Energy and Industrial Structure Adjustment Potential to Achieve a Low-carbon Economy by 2020. Sustainability 2013, 5, 5081 -5099.

AMA Style

Nan Xiang, Feng Xu, Jinghua Sha. Simulation Analysis of China’s Energy and Industrial Structure Adjustment Potential to Achieve a Low-carbon Economy by 2020. Sustainability. 2013; 5 (12):5081-5099.

Chicago/Turabian Style

Nan Xiang; Feng Xu; Jinghua Sha. 2013. "Simulation Analysis of China’s Energy and Industrial Structure Adjustment Potential to Achieve a Low-carbon Economy by 2020." Sustainability 5, no. 12: 5081-5099.

Journal article
Published: 01 January 2013 in Environmental Engineering and Management Journal
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ACS Style

Feng Xu; Nan Xiang; Peter Nijkamp; Yoshiro Higano. DYNAMIC SIMULATION OF CHINA'S CARBON INTENSITY AND ENERGY INTENSITY EVALUATION FOCUSING ON INDUSTRY AND ENERGY STRUCTURE ADJUSTMENTS BY 2020. Environmental Engineering and Management Journal 2013, 12, 1897 -1901.

AMA Style

Feng Xu, Nan Xiang, Peter Nijkamp, Yoshiro Higano. DYNAMIC SIMULATION OF CHINA'S CARBON INTENSITY AND ENERGY INTENSITY EVALUATION FOCUSING ON INDUSTRY AND ENERGY STRUCTURE ADJUSTMENTS BY 2020. Environmental Engineering and Management Journal. 2013; 12 (10):1897-1901.

Chicago/Turabian Style

Feng Xu; Nan Xiang; Peter Nijkamp; Yoshiro Higano. 2013. "DYNAMIC SIMULATION OF CHINA'S CARBON INTENSITY AND ENERGY INTENSITY EVALUATION FOCUSING ON INDUSTRY AND ENERGY STRUCTURE ADJUSTMENTS BY 2020." Environmental Engineering and Management Journal 12, no. 10: 1897-1901.

Journal article
Published: 01 May 2012 in Advanced Materials Research
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After 1970s, Japan has established relative laws and regulations to constraint industrial water, building water usage and forbidden unreasonable ground water exploitation which is caused by large amount of groundwater exploitation in 1960s. Such measures solved ground collapse problem on one hand indeed; on the other hand, along with the prevention of ground water exploitation, the groundwater level recovered to the normal level, and the floating power brought by groundwater rising threatened the architecture underground. The claim for groundwater utilization is rising. Also, groundwater has high value and good quality to supply water resource. Therefore, this research aims to construct a comprehensive groundwater exploitation model to clarify the sustainable groundwater utilization and economic, environmental impacts brought by groundwater usage. This new comprehensive model combined optimal groundwater exploitation model, water cycle model and socio-economic model together to practice optimal simulation. Through computer scenarios, we can clearly ensure groundwater utilization amount and method considering the sustainable development. Furthermore, the simulation model can be applied in other regions adjusting by specific characteristics.

ACS Style

Feng Xu; Nan Xiang; Ataru Nakamura; Takeshi Mizunoya; Susumu Uchida; Yoshiro Higano. Simulation Model Construction of Comprehensive Evaluation of Groundwater Reasonable and Effectively Utilization in Tokyo, Japan. Advanced Materials Research 2012, 518-523, 4241 -4246.

AMA Style

Feng Xu, Nan Xiang, Ataru Nakamura, Takeshi Mizunoya, Susumu Uchida, Yoshiro Higano. Simulation Model Construction of Comprehensive Evaluation of Groundwater Reasonable and Effectively Utilization in Tokyo, Japan. Advanced Materials Research. 2012; 518-523 ():4241-4246.

Chicago/Turabian Style

Feng Xu; Nan Xiang; Ataru Nakamura; Takeshi Mizunoya; Susumu Uchida; Yoshiro Higano. 2012. "Simulation Model Construction of Comprehensive Evaluation of Groundwater Reasonable and Effectively Utilization in Tokyo, Japan." Advanced Materials Research 518-523, no. : 4241-4246.

Journal article
Published: 01 May 2012 in Advanced Materials Research
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Water shortage and water pollution problems are becoming more and more serious nowadays; it gives rise to the use of reclaimed wastewater as an additional source of water supply and an efficient method of reducing and preventing water pollution. Tianjin is a rapidly growing city in both population and economy while water scarcity is intensifying and water pollution is deteriorating; also reclaimed water reuse in this city has just started. This study aims to find out the potential to realize sustainable development utilizing reclaimed water, and prove the feasibility of local government plan of Tianjin. This study mainly utilizes computer simulation to accomplish the comprehensive evaluation with LINGO programming. The simulation model will forecast the social and economic developing trend of Tianjin with the introduction of developed technology. According to scenarios, this research can give policy-making basis on implementing reclaimed water utilization to realize environment and economic development in Tianjin from 2010 to 2020. Furthermore, it can provide the specific developing plan to establish the sustainable development target, such as construction plan of new sewage plants, financial support, and reclaimed water distribution. Simulation results show that reclaimed water can be effective in saving water resource, reducing water pollutant and improving economic development in the catchment area.

ACS Style

Nan Xiang; Feng Xu; Jing Hua Sha; Helmut Yabar; Yoshiro Higano. Comprehensive Evaluation of Effectively Utilizing Reclaimed Water to Accomplish Sustainable Development in Tianjin, China. Advanced Materials Research 2012, 524-527, 3040 -3045.

AMA Style

Nan Xiang, Feng Xu, Jing Hua Sha, Helmut Yabar, Yoshiro Higano. Comprehensive Evaluation of Effectively Utilizing Reclaimed Water to Accomplish Sustainable Development in Tianjin, China. Advanced Materials Research. 2012; 524-527 ():3040-3045.

Chicago/Turabian Style

Nan Xiang; Feng Xu; Jing Hua Sha; Helmut Yabar; Yoshiro Higano. 2012. "Comprehensive Evaluation of Effectively Utilizing Reclaimed Water to Accomplish Sustainable Development in Tianjin, China." Advanced Materials Research 524-527, no. : 3040-3045.