Using directional distance function and nonparametric data envelopment analys＆, th＆ paper estimates the environmental total factor productivity （ETFP） of energy-intensive industries in China from 1995 to 2010, and...Using directional distance function and nonparametric data envelopment analys＆, th＆ paper estimates the environmental total factor productivity （ETFP） of energy-intensive industries in China from 1995 to 2010, and performs an empirical analysis on factors affecting ETFP growth after studying the differences of energy-intensive industries ＇ ETFP by industries and provinces. The findings include the following： energy-intensive industries ＇ETFP growth is mainly driven by technical progress; China, at its current development stage, still has the potential to raise the productivity of its energy- intensive industries. By estimating the provincial data, we find that the ETFP growth of different provinces converge at different levels. Further market liberalization, increased FDl flows and reductions in energy intensity will help to improve each province＇s ETFP growth. In addition, increasing investment in energy saving and emissions reduction and improving corporate environmental management capacity can help to reduce a company＇s short-term cost of complying with environmental regulations.展开更多
We investigated the effects of climate change on the distribution of the Asiatic ibex(Capra sibirica)in eastern Tajikistan.No existing climate change studies have been conducted on the habitat of a wild goat species i...We investigated the effects of climate change on the distribution of the Asiatic ibex(Capra sibirica)in eastern Tajikistan.No existing climate change studies have been conducted on the habitat of a wild goat species in Asia.We conducted ecological niche modelling to compare potential present and future distributions of suitable environmental conditions for ibex.Projecting to 2070,18%(2689 km^2)of the current suitable areas would be lost,mostly located in the southeastern and northwestern regions of the study area.However,new suitable habitats could expand outside the current ibex range—about 30%(4595 km^2)expansion until 2070.We found that the elevation,terrain roughness,seasonal temperature,and precipitation of warmest quarter were the most important factors in the models and had strong correlations to ibex distribution.The losses in the southeastern portion overlapped most of the current locations of ibex in that region.These losses were observed in the much lower elevations of the study area(3500 m to 4000 m).When considering both loss and gain,the ibex could see a net expansion to new suitable habitats.About 30%(1379 km^2)of the average habitat gains for the Asiatic ibex in 2070 showed a shift to northern lower temperature habitats.Our results are beneficial in planning for the potential effects on biodiversity conservation in the eastern mountain region of Tajikistan under climate change scenarios.Special attention should be given to the ibex populations in the southeastern region,where habitats could become unsuitable for the species as a result of the climate-induced effects on the mountain ecosystem.展开更多
文摘Using directional distance function and nonparametric data envelopment analys＆, th＆ paper estimates the environmental total factor productivity （ETFP） of energy-intensive industries in China from 1995 to 2010, and performs an empirical analysis on factors affecting ETFP growth after studying the differences of energy-intensive industries ＇ ETFP by industries and provinces. The findings include the following： energy-intensive industries ＇ETFP growth is mainly driven by technical progress; China, at its current development stage, still has the potential to raise the productivity of its energy- intensive industries. By estimating the provincial data, we find that the ETFP growth of different provinces converge at different levels. Further market liberalization, increased FDl flows and reductions in energy intensity will help to improve each province＇s ETFP growth. In addition, increasing investment in energy saving and emissions reduction and improving corporate environmental management capacity can help to reduce a company＇s short-term cost of complying with environmental regulations.
基金The Safari Club International Foundation(SCIF)The Federal Government of Germany via Deutsche Gesellschaft für Internationale Zusammenarbeit Gmb H(3393)
文摘We investigated the effects of climate change on the distribution of the Asiatic ibex(Capra sibirica)in eastern Tajikistan.No existing climate change studies have been conducted on the habitat of a wild goat species in Asia.We conducted ecological niche modelling to compare potential present and future distributions of suitable environmental conditions for ibex.Projecting to 2070,18%(2689 km^2)of the current suitable areas would be lost,mostly located in the southeastern and northwestern regions of the study area.However,new suitable habitats could expand outside the current ibex range—about 30%(4595 km^2)expansion until 2070.We found that the elevation,terrain roughness,seasonal temperature,and precipitation of warmest quarter were the most important factors in the models and had strong correlations to ibex distribution.The losses in the southeastern portion overlapped most of the current locations of ibex in that region.These losses were observed in the much lower elevations of the study area(3500 m to 4000 m).When considering both loss and gain,the ibex could see a net expansion to new suitable habitats.About 30%(1379 km^2)of the average habitat gains for the Asiatic ibex in 2070 showed a shift to northern lower temperature habitats.Our results are beneficial in planning for the potential effects on biodiversity conservation in the eastern mountain region of Tajikistan under climate change scenarios.Special attention should be given to the ibex populations in the southeastern region,where habitats could become unsuitable for the species as a result of the climate-induced effects on the mountain ecosystem.
