Low-carbon tourism is an irresistible development trend of world tourism industry, domestic and international theoretical researches and practices have remained in the exploration stage, especially function and role o...Low-carbon tourism is an irresistible development trend of world tourism industry, domestic and international theoretical researches and practices have remained in the exploration stage, especially function and role of humanistic tourism resources in low-carbon tourism have not been fully recognized. In this study, facility environment is regarded as the fundamental requirement of low-carbon tourism development, and humanistic elements as the connotative support. Therefore, based on exploring low-carbon utilization features and functions of humanistic tourism resources, the low-carbon techniques and models of using humanistic tourism resources were proposed, for example, designing low-carbon humanistic tourism products characterized by "inheritance + innovation"; establishing the coordinated development system for low-carbon utilization and connotative preservation of humanistic tourism resources; realizing the utilization model with low energy consumption, low emission and pollution under the premise of maintaining integrality, diversity and sustainability of humanistic tourism system, so as to enrich connotations of low-carbon tourism and bring sustainable vitality of low-carbon tourism.展开更多
China is one of the countries where there is abundant glacial water rears and glaciers exist in a vast area of mountainous regions. In this paper, a prehensive discusion is made for the characteristics of glacial wat...China is one of the countries where there is abundant glacial water rears and glaciers exist in a vast area of mountainous regions. In this paper, a prehensive discusion is made for the characteristics of glacial water resource, the chewical properties of matwater and the prospects of future utilization in China. It has found that the gladal water resource is a water resource system based on the effect of a solid water reservoir. Its degree of mineralization is low and it almost does not have any pollution. In particular glacial water is high quality fresh water resource in the inland arid region. It is necesary to reconfirm the value of this water and conduct further studies on the fundamentals of its application in order to ratiedly exploit, utilze and preserve the glacial water resource.展开更多
China is very rich in germplasm resources of Actinidia Lindl.There are 66 actinidia species in the world,and 62 species are found in China.A.deliciosa,A.chinensis Planch.,A.eriantha Benth.and A.arguta(Sieb.&Zucc)P...China is very rich in germplasm resources of Actinidia Lindl.There are 66 actinidia species in the world,and 62 species are found in China.A.deliciosa,A.chinensis Planch.,A.eriantha Benth.and A.arguta(Sieb.&Zucc)Planch.ex Miq.unique to China all have high economic value and are widely cultivated.In this paper,the origin and cultivation history,nutritional value,preservation and rational use of Actinidia germplasm resources were reviewed,and the development and utilization of Actinidia germplasm resources in China was discussed,aiming to facilitate the sustainable utilization and variety improvement of kiwifruit germplasm resources.展开更多
Use of water-borne wood preservatives began in approximately the 1950s. Residential and commercial uses rapidly developed for products such as decking, fences, and other outdoor structures. Nearly all such products we...Use of water-borne wood preservatives began in approximately the 1950s. Residential and commercial uses rapidly developed for products such as decking, fences, and other outdoor structures. Nearly all such products were treated by preservatives using arsenic as a major ingredient. The most common preservative was chromated copper arsenate (CCA). A smaller volume used ammoniacal copper zinc arsenate (ACZA). Preservative label changes made in 2003 limited uses of these arsenical treatments to industrial or agricultural type uses, such as poles, piles, ties, bridges, and fencing. Use volumes of preservative-treated wood continued to grow after the label change, but the types of preservatives used changed greatly. The amounts of water-borne treated wood reaching end-of-life and being disposed also continued to grow, reflecting the increasing inventory of volume in service. However, the volume of arsenical-treated wood being disposed peaked in approximately 2008 and is now only approximately one-quarter of that volume. Most of the arsenical-treated wood now being disposed consists of large, easily identified and separated pieces, such as round poles, piles, and fence posts and timbers, which can be easily managed separated from other wood construction and demolition (C & D) waste. Thus, managing C & D waste to limit arsenic contamination of potential products, such as mulch, will be much more practical than some have feared.展开更多
基金Supported by Humanities and Social Sciences Youth Foundation of Tongji University
文摘Low-carbon tourism is an irresistible development trend of world tourism industry, domestic and international theoretical researches and practices have remained in the exploration stage, especially function and role of humanistic tourism resources in low-carbon tourism have not been fully recognized. In this study, facility environment is regarded as the fundamental requirement of low-carbon tourism development, and humanistic elements as the connotative support. Therefore, based on exploring low-carbon utilization features and functions of humanistic tourism resources, the low-carbon techniques and models of using humanistic tourism resources were proposed, for example, designing low-carbon humanistic tourism products characterized by "inheritance + innovation"; establishing the coordinated development system for low-carbon utilization and connotative preservation of humanistic tourism resources; realizing the utilization model with low energy consumption, low emission and pollution under the premise of maintaining integrality, diversity and sustainability of humanistic tourism system, so as to enrich connotations of low-carbon tourism and bring sustainable vitality of low-carbon tourism.
文摘China is one of the countries where there is abundant glacial water rears and glaciers exist in a vast area of mountainous regions. In this paper, a prehensive discusion is made for the characteristics of glacial water resource, the chewical properties of matwater and the prospects of future utilization in China. It has found that the gladal water resource is a water resource system based on the effect of a solid water reservoir. Its degree of mineralization is low and it almost does not have any pollution. In particular glacial water is high quality fresh water resource in the inland arid region. It is necesary to reconfirm the value of this water and conduct further studies on the fundamentals of its application in order to ratiedly exploit, utilze and preserve the glacial water resource.
基金Supported by Dalian Science and Technology Innovation Fund(2019J13SN120)。
文摘China is very rich in germplasm resources of Actinidia Lindl.There are 66 actinidia species in the world,and 62 species are found in China.A.deliciosa,A.chinensis Planch.,A.eriantha Benth.and A.arguta(Sieb.&Zucc)Planch.ex Miq.unique to China all have high economic value and are widely cultivated.In this paper,the origin and cultivation history,nutritional value,preservation and rational use of Actinidia germplasm resources were reviewed,and the development and utilization of Actinidia germplasm resources in China was discussed,aiming to facilitate the sustainable utilization and variety improvement of kiwifruit germplasm resources.
文摘Use of water-borne wood preservatives began in approximately the 1950s. Residential and commercial uses rapidly developed for products such as decking, fences, and other outdoor structures. Nearly all such products were treated by preservatives using arsenic as a major ingredient. The most common preservative was chromated copper arsenate (CCA). A smaller volume used ammoniacal copper zinc arsenate (ACZA). Preservative label changes made in 2003 limited uses of these arsenical treatments to industrial or agricultural type uses, such as poles, piles, ties, bridges, and fencing. Use volumes of preservative-treated wood continued to grow after the label change, but the types of preservatives used changed greatly. The amounts of water-borne treated wood reaching end-of-life and being disposed also continued to grow, reflecting the increasing inventory of volume in service. However, the volume of arsenical-treated wood being disposed peaked in approximately 2008 and is now only approximately one-quarter of that volume. Most of the arsenical-treated wood now being disposed consists of large, easily identified and separated pieces, such as round poles, piles, and fence posts and timbers, which can be easily managed separated from other wood construction and demolition (C & D) waste. Thus, managing C & D waste to limit arsenic contamination of potential products, such as mulch, will be much more practical than some have feared.
