This paper discusses the constraining factors to sustainable utilization ofwater resources in China, and the countermeasures to realize sustainable water utilization. Theresult of comprehensive analysis shows that con...This paper discusses the constraining factors to sustainable utilization ofwater resources in China, and the countermeasures to realize sustainable water utilization. Theresult of comprehensive analysis shows that constraining factors to sustainable utilization of waterresources in China are complicated, including physical geographical factors and socio-economicfactors, such as uneven distribution of water resources at temporal and spatial scales,inappropriate institutional arrangement and non-water-saving and non-wter-conservation productionand life mode. The countermeasures against constraining factors to water resources sustainabledevelopment are put forward as follows: 1) using wetlands and forests, and through spatialconversion to realize temporally sustainable supply of water resources; 2) transferring waterbetween basins and areas and developing various water resources in water shortage area; 3)establishing water-saving society; 4) strengthening water pollution control and water resourcesprotection; and 5) establishing unified water resources management mechanism.展开更多
By using the data of 1949 – 2001 (53 years) of Tropical Cyclone (TC) Yearbooks, statistical analyses are performed to study the climatic features of TCs making landfall and then passing through lakes (hereafter refer...By using the data of 1949 – 2001 (53 years) of Tropical Cyclone (TC) Yearbooks, statistical analyses are performed to study the climatic features of TCs making landfall and then passing through lakes (hereafter referred to as "L-TCs") in China. Results show that L-TCs can sustain a long time over land and the intensity is very strong during the course of landfall. Lakes can noticeably slow down the reduction of TC intensity, with the minimum pressure mostly maintained or decreased and the maximum velocity increased. The middle reach of the Yangtze River has the biggest TC dissipating rate as compared with the other areas where the TC is active.展开更多
In this paper,the authors have empirically analyzed the convergence in per capita GDP gap and the convergence in the variation of energy intensity with respect to the change of per capita GDP between China and eight d...In this paper,the authors have empirically analyzed the convergence in per capita GDP gap and the convergence in the variation of energy intensity with respect to the change of per capita GDP between China and eight developed countries.Then,the authors run a regression on the impact of decisive factors of economic growth on energy intensity and its change,so as to find out the economic mechanism of energy intensity gap changing with respect to the variation of economic growth.This study concludes that:First,there is a convergence in per capita GDP gap between China and the eight developed countries.With the convergence in per capita GDP gap,the energy intensity gap between China and eight different countries also converge,and the convergence rate of the latter is faster than that of the former,i.e.if the per capita GDP gap between China and the eight developed countries decreases by 1%,the energy intensity gap between them will correspondingly decrease by 1.552%.Second,the energy intensity decreases with the improvement of industrial structure,the rising of energy prices,the advances of technology,and the expansion of investment in fixed assets,and it slightly increases with the increase of FDI.Third,the energy intensity gap between China and eight developed countries narrows with the lessening of the difference in fixed assets investment,energy prices,and technological progress between China and eight developed countries,yet increases with the narrowing of the difference in FDI,and has no significant correlation with the difference in industrial structure.Fourth,the narrowing of difference in per capita GDP between China and the eight developed countries can result in the lessening of energy intensity gap,whose economic mechanism is that the decisive factors,such as difference in investment,technology,and the competition mechanism of prices,which can determine the difference in economic growth,can significantly affect the energy intensity gap.展开更多
The focal mechanisms of 62 moderate-small earthquakes since 1980 in the " Huoshan seismic window" region are calculated with the method developed recently by Snoke, combining the use of the first motion of P, SV and...The focal mechanisms of 62 moderate-small earthquakes since 1980 in the " Huoshan seismic window" region are calculated with the method developed recently by Snoke, combining the use of the first motion of P, SV and SH waves with their amplitude ratios. Based on these abundant focal mechanisms, the mean tectonic stress field in the "Huoshan seismic window" region is inverted with the average stress tensor method, and the result shows that the "Huoshan seismic window" region is horizontally compressed in the near EW direction and horizontally dilated in the near NS direction, which is in accord with statistical results of focal mechanism parameters. We estimate the difference (also referred to as consistency parameter 0) between the force axis direction of the focal mechanism solution and the mean stress tensor, then further analyze the variation characteristics of 0 versus time, and the relationship with moderately strong earthquakes in the east China region. The result indicates that 0 in the " Huoshan seismic window" region is in good correspondence with moderately strong earthquakes in the East China region. When 0 is lower than the mean value, corresponding moderately strong earthquakes may occur in the East China region.展开更多
During the past decades, the transformation of the labor market has significantly impacted on workers' wage structures and their employment in China. Along with the widening wage gaps and the growing income inequalit...During the past decades, the transformation of the labor market has significantly impacted on workers' wage structures and their employment in China. Along with the widening wage gaps and the growing income inequalities, the size of non-standard jobs expanded rapidly in China's urban labor market. As a result of this, the concept of working poor has become increasingly applicable to social and labor market realities in China, Based on the household survey data and by using quantitative analysis, this paper attempts to examine the interaction between the compulsory minimum wage standards and the working poor in the period of China's economic transition. The results show that for those whose monthly wages higher than the compulsory minimum wage standards were less likely to work poor and that workers with wages lower than the minimum wage floor were vulnerable to working poor, which supported the expectation that the implementation of compulsory minimum wages would help to reduce the risk of being a member among the working poor in China's urban labor market.展开更多
An earthquake measuring 5.1 on the Richter scale struck Wen'an county,Hebei Province on July 4,2006. No casualties have been reported,with only slight damage. The disaster level of this event is the slightest on t...An earthquake measuring 5.1 on the Richter scale struck Wen'an county,Hebei Province on July 4,2006. No casualties have been reported,with only slight damage. The disaster level of this event is the slightest on the M4.9~5.1 events record tally since the CCDSN (China Center of Digital Seismic Network) was built in 1999. The epicenter intensity of this earthquake was low,while in areas like Beijing,which is 100km far away,abnormal high intensity zones appeared. This article discusses the reasons behind this abnormal phenomenon,with the diagrams of intensity isolines drawn by the intense seismic stations and networks in the capital circle area as references,as well as the seismogenic mechanism in the source,the seismic histories,the geological structures and the ray pathways of seismic waves in areas within 150km around the epicenter. It was concluded that the special dynamic and geological situations were the main causes for the lower intensity degree and slight damage in the epicenter area,but higher intensity in the surrounding areas.展开更多
We analyze the mechanism of natural resource regulation on regional economic growth and estimate the model based on panel data for 31 Chinese provinces from 2000 to 2009. Our findings suggest that a fixed effect model...We analyze the mechanism of natural resource regulation on regional economic growth and estimate the model based on panel data for 31 Chinese provinces from 2000 to 2009. Our findings suggest that a fixed effect model is more appropriate than a mixed cross section or random effect model. A fixed effect model between natural resource regulation and regional economic growth quantity and quality was constructed to check the validity of natural resource regulation on regional economic growth. We found that natural resource regulation is effective at regulating regional economic growth; and natural resource regulation restrains regional economic speed to some extent. The per unit growth of natural resource regulation intensity will cut 24.6 billion CNY in gross domestic product; however, natural resource regulation can improve the quality of regional economic growth. Growth in the per unit natural resource regulation intensity will increase the index of regional economic growth quality by 0.022 units. In summary, these data support the proposal for using natural resources to regulate regional economic growth and transformation.展开更多
文摘This paper discusses the constraining factors to sustainable utilization ofwater resources in China, and the countermeasures to realize sustainable water utilization. Theresult of comprehensive analysis shows that constraining factors to sustainable utilization of waterresources in China are complicated, including physical geographical factors and socio-economicfactors, such as uneven distribution of water resources at temporal and spatial scales,inappropriate institutional arrangement and non-water-saving and non-wter-conservation productionand life mode. The countermeasures against constraining factors to water resources sustainabledevelopment are put forward as follows: 1) using wetlands and forests, and through spatialconversion to realize temporally sustainable supply of water resources; 2) transferring waterbetween basins and areas and developing various water resources in water shortage area; 3)establishing water-saving society; 4) strengthening water pollution control and water resourcesprotection; and 5) establishing unified water resources management mechanism.
基金Open Foundation for Wuhan Institute of Heavy Rain, CMA (IHR2006G09)a Natural Science Foundation of China project (40575029)
文摘By using the data of 1949 – 2001 (53 years) of Tropical Cyclone (TC) Yearbooks, statistical analyses are performed to study the climatic features of TCs making landfall and then passing through lakes (hereafter referred to as "L-TCs") in China. Results show that L-TCs can sustain a long time over land and the intensity is very strong during the course of landfall. Lakes can noticeably slow down the reduction of TC intensity, with the minimum pressure mostly maintained or decreased and the maximum velocity increased. The middle reach of the Yangtze River has the biggest TC dissipating rate as compared with the other areas where the TC is active.
文摘In this paper,the authors have empirically analyzed the convergence in per capita GDP gap and the convergence in the variation of energy intensity with respect to the change of per capita GDP between China and eight developed countries.Then,the authors run a regression on the impact of decisive factors of economic growth on energy intensity and its change,so as to find out the economic mechanism of energy intensity gap changing with respect to the variation of economic growth.This study concludes that:First,there is a convergence in per capita GDP gap between China and the eight developed countries.With the convergence in per capita GDP gap,the energy intensity gap between China and eight different countries also converge,and the convergence rate of the latter is faster than that of the former,i.e.if the per capita GDP gap between China and the eight developed countries decreases by 1%,the energy intensity gap between them will correspondingly decrease by 1.552%.Second,the energy intensity decreases with the improvement of industrial structure,the rising of energy prices,the advances of technology,and the expansion of investment in fixed assets,and it slightly increases with the increase of FDI.Third,the energy intensity gap between China and eight developed countries narrows with the lessening of the difference in fixed assets investment,energy prices,and technological progress between China and eight developed countries,yet increases with the narrowing of the difference in FDI,and has no significant correlation with the difference in industrial structure.Fourth,the narrowing of difference in per capita GDP between China and the eight developed countries can result in the lessening of energy intensity gap,whose economic mechanism is that the decisive factors,such as difference in investment,technology,and the competition mechanism of prices,which can determine the difference in economic growth,can significantly affect the energy intensity gap.
基金funded by the Youth Program of Earthquake Scientific Research Fund of Anhui Province(20120704)Contract Subject of Earthquake Administration of Anhui Province(201210)
文摘The focal mechanisms of 62 moderate-small earthquakes since 1980 in the " Huoshan seismic window" region are calculated with the method developed recently by Snoke, combining the use of the first motion of P, SV and SH waves with their amplitude ratios. Based on these abundant focal mechanisms, the mean tectonic stress field in the "Huoshan seismic window" region is inverted with the average stress tensor method, and the result shows that the "Huoshan seismic window" region is horizontally compressed in the near EW direction and horizontally dilated in the near NS direction, which is in accord with statistical results of focal mechanism parameters. We estimate the difference (also referred to as consistency parameter 0) between the force axis direction of the focal mechanism solution and the mean stress tensor, then further analyze the variation characteristics of 0 versus time, and the relationship with moderately strong earthquakes in the east China region. The result indicates that 0 in the " Huoshan seismic window" region is in good correspondence with moderately strong earthquakes in the East China region. When 0 is lower than the mean value, corresponding moderately strong earthquakes may occur in the East China region.
文摘During the past decades, the transformation of the labor market has significantly impacted on workers' wage structures and their employment in China. Along with the widening wage gaps and the growing income inequalities, the size of non-standard jobs expanded rapidly in China's urban labor market. As a result of this, the concept of working poor has become increasingly applicable to social and labor market realities in China, Based on the household survey data and by using quantitative analysis, this paper attempts to examine the interaction between the compulsory minimum wage standards and the working poor in the period of China's economic transition. The results show that for those whose monthly wages higher than the compulsory minimum wage standards were less likely to work poor and that workers with wages lower than the minimum wage floor were vulnerable to working poor, which supported the expectation that the implementation of compulsory minimum wages would help to reduce the risk of being a member among the working poor in China's urban labor market.
基金funded by the project "Demonstration of typical changes of vulne rability of disasters in urban-rural fringe:a case study of seismic disaster in the Beijing-Tianjin-Tangshan region" of National Natural Science Foundation (Grant No.40771011)
文摘An earthquake measuring 5.1 on the Richter scale struck Wen'an county,Hebei Province on July 4,2006. No casualties have been reported,with only slight damage. The disaster level of this event is the slightest on the M4.9~5.1 events record tally since the CCDSN (China Center of Digital Seismic Network) was built in 1999. The epicenter intensity of this earthquake was low,while in areas like Beijing,which is 100km far away,abnormal high intensity zones appeared. This article discusses the reasons behind this abnormal phenomenon,with the diagrams of intensity isolines drawn by the intense seismic stations and networks in the capital circle area as references,as well as the seismogenic mechanism in the source,the seismic histories,the geological structures and the ray pathways of seismic waves in areas within 150km around the epicenter. It was concluded that the special dynamic and geological situations were the main causes for the lower intensity degree and slight damage in the epicenter area,but higher intensity in the surrounding areas.
基金National Natural Science Foundation of China (70873119 40871253)National Philosophy and Social Science Foundation of China (11CJY050)
文摘We analyze the mechanism of natural resource regulation on regional economic growth and estimate the model based on panel data for 31 Chinese provinces from 2000 to 2009. Our findings suggest that a fixed effect model is more appropriate than a mixed cross section or random effect model. A fixed effect model between natural resource regulation and regional economic growth quantity and quality was constructed to check the validity of natural resource regulation on regional economic growth. We found that natural resource regulation is effective at regulating regional economic growth; and natural resource regulation restrains regional economic speed to some extent. The per unit growth of natural resource regulation intensity will cut 24.6 billion CNY in gross domestic product; however, natural resource regulation can improve the quality of regional economic growth. Growth in the per unit natural resource regulation intensity will increase the index of regional economic growth quality by 0.022 units. In summary, these data support the proposal for using natural resources to regulate regional economic growth and transformation.