The existing research findings of our environmental history fail to attach due importance to the environmental history of ancient China. The studies of China's environmental history should extend the time scope fu...The existing research findings of our environmental history fail to attach due importance to the environmental history of ancient China. The studies of China's environmental history should extend the time scope further to more ancient times and raise interdisciplinary research awareness. Such studies can help us trace our sources of culture and ecology, and better understand the current world and humanity itself. Studies on the environmental history of ancient China also need to be equipped with corresponding research concepts, orientation and approaches.展开更多
Water leisure tourism is an emerging theme in urban planning, and its planning mode and operation level directly influence the eco-cycle degree of urban development. Tourism activities inevitably impact environmental ...Water leisure tourism is an emerging theme in urban planning, and its planning mode and operation level directly influence the eco-cycle degree of urban development. Tourism activities inevitably impact environmental quality of urban water spaces, and the research on the environmental carrying capacity of such spaces has also become an important prerequisite of tourism planning. Taking the Yangzhou Ancient Canal Scenic Area for an example, the paper constructed the estimated indicators of water leisure tourism environmental carrying capacity on the basis of analyzing scenic geographical resources and tourism economic conditions, and calculated the scenic area's water leisure tourism environmental integrated carrying capacity by the method of barrel extrapolation, providing a reasonable foundation for evaluating the planning conditions in the eco-cycle urban water leisure tourism planning.展开更多
By taking the design of water system and water environment of ancient residences in Huizhou as the research objects and applying relevant theories,the paper has deeply discussed and analyzed components of the water en...By taking the design of water system and water environment of ancient residences in Huizhou as the research objects and applying relevant theories,the paper has deeply discussed and analyzed components of the water environment of Huizhou ancient residences from the perspective of the design of environmental art.It considers that the water environment of Huizhou ancient villages is composed of linear factors,spot factors and surface factors,and each factor is related with each other.By combining with comparative researches on water environmental spaces in Huizhou ancient residences,it aims to explore some reference for characteristic,ecological and sustainable development of the design of modern residential water environmental space.展开更多
Buildings and spatial environment left by history record evolution traces of cities and significant events related to the cities, and as a particular carrier of culture, they are witnesses of city development, and sho...Buildings and spatial environment left by history record evolution traces of cities and significant events related to the cities, and as a particular carrier of culture, they are witnesses of city development, and show the later generations memories of the city history. In urban planning, historical images must be respected, the relation between ancient cultural relics and urban planning handled properly, city brand established, and city image improved. The author, on the basis of exploring signifi cance of urban ancient cultural relics, used practical cases to fi gure out approaches of preserving urban ancient cultural relics in urban planning.展开更多
Located in the central Asia, ancient Loullan Town was a place of strategic importance to the ancient SilkRoad. According to the historical records, it was flourishing during the period from the second century B. C. to...Located in the central Asia, ancient Loullan Town was a place of strategic importance to the ancient SilkRoad. According to the historical records, it was flourishing during the period from the second century B. C. to the thirdcentury A. D. However, it was disrecorded suddenly 1400 years ago. Until 1900 it was discovered by a Swedish exploration party. The ruins of Loulan is situated on the west bank of Lop Nur Lake and the delta of the Tarim River (40°29’55’’N, 89°55’22"E), and occupies an area of 108 240 m2. Two main tributaries of the Tarim River passed by its northernand southern sides respectively and converged into Lop Nur Lake about 100 km eastward. Human civilization of the Loulan Town had been developed in the Stone Age, which was revealed by a lot of stone implements found in the ration, andthe discovery of the corpse of "Loulan Beauty" proved the continuity of economic development. During several centuriesaround the Christian era, Loulan had become a place of strategic importance on the Silk Road because its superior geographical position and natural conditions. The decline of ancient Loulan Town was caused by natural change of the rivercourses and rapid environmental deterioration.展开更多
Lying on the northwest of Nihewan Basin, Houjiayao Site was discovered 40 years ago. But there is still a controversy about the existence age and the living environment of Houjiayao ancient human. Based on the geologi...Lying on the northwest of Nihewan Basin, Houjiayao Site was discovered 40 years ago. But there is still a controversy about the existence age and the living environment of Houjiayao ancient human. Based on the geological investigations, electrical resistivity sounding and altitude measuring, authors of this paper attempt to do a research on stratigraphic structure and the development of the ancient river in Houjiayao Site, and to interpret the above problems. The results are as follows:(1) An ancient river, which came from Xionger Mountain in the north of the Site, developed in Houjiayao Site, and its width was more than 1 km. The ancient river formed before 240 ka B.P., and disappeared in the early stage of the late Pleistocene, and its developing history ran through the entire living stage of Houjiayao ancient human.(2) The Site cultural relics were not buried in the lacustrine facies, but in the oxbow lake sediments of the ancient river and clay layer which laid on the oxbow lake sediments unconformably during the period of 224-161 ka B.P., and it indicated that the Houjiayao ancient people lived here for as long as 60 ka years.(3) The Site looked like a wide armchair faced southeast, and it provided a relatively mild and comfortable environment for the ancient. The ancient river provided the ancient human with water, and the superior eco-environment also provided plentiful food for the ancient human. Xionger Mountain was not only the source of the ancient river, but also the producing area for high quality stone materials. The old river carried stone materials to the Site, making it easier to make stone implements. Hence, the ancient human, who lived in cold weather, were more likely to choose better habitats such as the Houjiayao Site near the ancient river.(4) The old river embedded in the lacustrine facies, so the content of silt was high, and it was feculent. And the water of the oxbow lake near Houjiayao Site was clear and slow. What's more, with plentiful plants, the oxbow lake was a preferred place for all kinds of animals to get food and water. But the geomorphologic features of this oxbow lake made it hard for animals to escape when faced with dangerous situations. So ancient human had a better chance to get food from hunting near the oxbow lake than in other areas.展开更多
滑坡易发性评价是滑坡灾害防治的重要手段之一,而不合理的滑坡负样本会影响滑坡易发性评价,从而影响到滑坡灾害的防治,因此提供一种合理的负样本选取方法变得尤为关键。以西藏米林市的古滑坡为例,选择高程、坡度、坡向、坡位、距道路距...滑坡易发性评价是滑坡灾害防治的重要手段之一,而不合理的滑坡负样本会影响滑坡易发性评价,从而影响到滑坡灾害的防治,因此提供一种合理的负样本选取方法变得尤为关键。以西藏米林市的古滑坡为例,选择高程、坡度、坡向、坡位、距道路距离、距断层距离、距水系距离、地形起伏度、地层岩性、土地利用类型10类环境因子,使用Relief算法计算环境因子的贡献值并依据贡献值优化选择环境因子;基于环境因子优化的目标空间外向化采样法(target space exteriorization sampling,简称TSES)选择负样本,作为性能优异的随机森林模型的输入变量;之后结合优化的环境因子和正或负样本预测米林市的滑坡易发性,并用混淆矩阵和ROC曲线评价构建模型的性能。为检验环境因子优化的TSES法的有效性和先进性,采用耦合信息量法和TSES法选择滑坡负样本并构建随机森林模型,与环境因子优化的TSES法构建的随机森林模型进行对比研究。结果表明,环境因子优化的TSES法构建的随机森林模型的评价效果较好,其ACC为93.7%、AUC为0.987,均高于耦合信息量、TSES法构成的模型。环境因子优化的TSES法能够提高模型的精度,解决多因子作为约束条件取样中因子选取的问题,为滑坡易发性评价采集负样本提供了新的思路。展开更多
基金a staged research result of "Studies on Energy Crisis in Ancient North China and Corresponding Socio-ecological Change"(14CZS035)a youth program founded by National Social Sciences Fund and"Multi-volume History of Chinese Ecological Environment"(13&ZD080)a major program supported by National Social Sciences Fund
文摘The existing research findings of our environmental history fail to attach due importance to the environmental history of ancient China. The studies of China's environmental history should extend the time scope further to more ancient times and raise interdisciplinary research awareness. Such studies can help us trace our sources of culture and ecology, and better understand the current world and humanity itself. Studies on the environmental history of ancient China also need to be equipped with corresponding research concepts, orientation and approaches.
基金Supported by 2011 Jiangsu Provincial Doctor Candidate Scientific Research Renovation Program: Studies on Urban Water Leisure Tourism Planning Based on Eco-cycle Theory (CXZZ11_0543)
文摘Water leisure tourism is an emerging theme in urban planning, and its planning mode and operation level directly influence the eco-cycle degree of urban development. Tourism activities inevitably impact environmental quality of urban water spaces, and the research on the environmental carrying capacity of such spaces has also become an important prerequisite of tourism planning. Taking the Yangzhou Ancient Canal Scenic Area for an example, the paper constructed the estimated indicators of water leisure tourism environmental carrying capacity on the basis of analyzing scenic geographical resources and tourism economic conditions, and calculated the scenic area's water leisure tourism environmental integrated carrying capacity by the method of barrel extrapolation, providing a reasonable foundation for evaluating the planning conditions in the eco-cycle urban water leisure tourism planning.
文摘By taking the design of water system and water environment of ancient residences in Huizhou as the research objects and applying relevant theories,the paper has deeply discussed and analyzed components of the water environment of Huizhou ancient residences from the perspective of the design of environmental art.It considers that the water environment of Huizhou ancient villages is composed of linear factors,spot factors and surface factors,and each factor is related with each other.By combining with comparative researches on water environmental spaces in Huizhou ancient residences,it aims to explore some reference for characteristic,ecological and sustainable development of the design of modern residential water environmental space.
基金Sponsored by Program of Guangxi Humanities and Social Science Development Center(KF2010025)
文摘Buildings and spatial environment left by history record evolution traces of cities and significant events related to the cities, and as a particular carrier of culture, they are witnesses of city development, and show the later generations memories of the city history. In urban planning, historical images must be respected, the relation between ancient cultural relics and urban planning handled properly, city brand established, and city image improved. The author, on the basis of exploring signifi cance of urban ancient cultural relics, used practical cases to fi gure out approaches of preserving urban ancient cultural relics in urban planning.
文摘Located in the central Asia, ancient Loullan Town was a place of strategic importance to the ancient SilkRoad. According to the historical records, it was flourishing during the period from the second century B. C. to the thirdcentury A. D. However, it was disrecorded suddenly 1400 years ago. Until 1900 it was discovered by a Swedish exploration party. The ruins of Loulan is situated on the west bank of Lop Nur Lake and the delta of the Tarim River (40°29’55’’N, 89°55’22"E), and occupies an area of 108 240 m2. Two main tributaries of the Tarim River passed by its northernand southern sides respectively and converged into Lop Nur Lake about 100 km eastward. Human civilization of the Loulan Town had been developed in the Stone Age, which was revealed by a lot of stone implements found in the ration, andthe discovery of the corpse of "Loulan Beauty" proved the continuity of economic development. During several centuriesaround the Christian era, Loulan had become a place of strategic importance on the Silk Road because its superior geographical position and natural conditions. The decline of ancient Loulan Town was caused by natural change of the rivercourses and rapid environmental deterioration.
基金Sponsored by Science and Technology Support Program of Hebei Province(13277611D)
文摘Lying on the northwest of Nihewan Basin, Houjiayao Site was discovered 40 years ago. But there is still a controversy about the existence age and the living environment of Houjiayao ancient human. Based on the geological investigations, electrical resistivity sounding and altitude measuring, authors of this paper attempt to do a research on stratigraphic structure and the development of the ancient river in Houjiayao Site, and to interpret the above problems. The results are as follows:(1) An ancient river, which came from Xionger Mountain in the north of the Site, developed in Houjiayao Site, and its width was more than 1 km. The ancient river formed before 240 ka B.P., and disappeared in the early stage of the late Pleistocene, and its developing history ran through the entire living stage of Houjiayao ancient human.(2) The Site cultural relics were not buried in the lacustrine facies, but in the oxbow lake sediments of the ancient river and clay layer which laid on the oxbow lake sediments unconformably during the period of 224-161 ka B.P., and it indicated that the Houjiayao ancient people lived here for as long as 60 ka years.(3) The Site looked like a wide armchair faced southeast, and it provided a relatively mild and comfortable environment for the ancient. The ancient river provided the ancient human with water, and the superior eco-environment also provided plentiful food for the ancient human. Xionger Mountain was not only the source of the ancient river, but also the producing area for high quality stone materials. The old river carried stone materials to the Site, making it easier to make stone implements. Hence, the ancient human, who lived in cold weather, were more likely to choose better habitats such as the Houjiayao Site near the ancient river.(4) The old river embedded in the lacustrine facies, so the content of silt was high, and it was feculent. And the water of the oxbow lake near Houjiayao Site was clear and slow. What's more, with plentiful plants, the oxbow lake was a preferred place for all kinds of animals to get food and water. But the geomorphologic features of this oxbow lake made it hard for animals to escape when faced with dangerous situations. So ancient human had a better chance to get food from hunting near the oxbow lake than in other areas.
文摘滑坡易发性评价是滑坡灾害防治的重要手段之一,而不合理的滑坡负样本会影响滑坡易发性评价,从而影响到滑坡灾害的防治,因此提供一种合理的负样本选取方法变得尤为关键。以西藏米林市的古滑坡为例,选择高程、坡度、坡向、坡位、距道路距离、距断层距离、距水系距离、地形起伏度、地层岩性、土地利用类型10类环境因子,使用Relief算法计算环境因子的贡献值并依据贡献值优化选择环境因子;基于环境因子优化的目标空间外向化采样法(target space exteriorization sampling,简称TSES)选择负样本,作为性能优异的随机森林模型的输入变量;之后结合优化的环境因子和正或负样本预测米林市的滑坡易发性,并用混淆矩阵和ROC曲线评价构建模型的性能。为检验环境因子优化的TSES法的有效性和先进性,采用耦合信息量法和TSES法选择滑坡负样本并构建随机森林模型,与环境因子优化的TSES法构建的随机森林模型进行对比研究。结果表明,环境因子优化的TSES法构建的随机森林模型的评价效果较好,其ACC为93.7%、AUC为0.987,均高于耦合信息量、TSES法构成的模型。环境因子优化的TSES法能够提高模型的精度,解决多因子作为约束条件取样中因子选取的问题,为滑坡易发性评价采集负样本提供了新的思路。
