[Objective] This study aimed to find out effective measures to solve land- scape water eutrophication. [Method] Based on an overview of the urban landscape water characteristics and pollution control situation, taking...[Objective] This study aimed to find out effective measures to solve land- scape water eutrophication. [Method] Based on an overview of the urban landscape water characteristics and pollution control situation, taking an example of the artificial lakes in a campus in Xi＇an, we comparatively analyzed the present pollution situation of Xiuyuan Lake and Mingyuan Lake, and provided controlling measures against eutrophication pollution, as well as restoration measures. [Result] All the indicators （TN, TP, Chl-a, NH3-N, CODMn） of the landscape water quality in both Xiuyuan Lake and Mingyuan Lake went severely beyond the Grade IV standards, presenting a state of heavy eutrophication. Nitrogen, phosphorus and other nutrient salts carried by atmospheric precipitation and its runoff, as well as domestic garbage generated by human activities were primary exogenous pollutants of the artificial lakes. And the release of sediment pollutants was endogenous substances causing deterioration of water quality. [Conclusion] This paper presents some measures to control the pollution of artificial lakes, and provides scientific references for the construction, operation and management of artificial lakes, as well as maintenance of aquatic environment.展开更多
The spatial pattern of urbanization in the Shanghai metropolitan area is quantified with GIS-based land use data set and gradient analysis of landscape metrics. A number of landscape metrics were computed along a 64 I...The spatial pattern of urbanization in the Shanghai metropolitan area is quantified with GIS-based land use data set and gradient analysis of landscape metrics. A number of landscape metrics were computed along a 64 Ion long and 6 km wide west-east transect and another 66 km long and 6 km wide south-north transect. The results of transect analysis with class-level metrics showed that the spatial pattern of urbanization could be reliably quantified using landscape metrics with a gradient analysis approach, and the location of the urbanization center could be identified precisely and consistently with multiple indices of the landscape metrics used in this study. Different land use types exhibited distinctive, but not necessarily unique, spatial signatures that were dependent on specific landscape metrics. These results seemed to characterize the urban core of the Shanghai metropolitan area rather accurately and precisely.. Agriculture patches were abundant and less fragmented; the urban land use types were extensive, having many small patches and highly fragmented.展开更多
Rapid urbanization has led to an increase o f urban artificial landscapes and the transformation of die earths surface, which has caused the dty to lose its functions of flood control and water purificatioiL There ...Rapid urbanization has led to an increase o f urban artificial landscapes and the transformation of die earths surface, which has caused the dty to lose its functions of flood control and water purificatioiL There are frequent urban flooding and waterlogging, deterioration of water quality in rivets and lakes, and increasing water and environmental problems. In response to these situations, the state proposed the construction of a sponge dty. In this paper, the background and rcsearch significance of the sponge city were expounded, the domestic and foreign related reseatch was summarized, and further thinking about the sponge dty in Chim was put forward, in order to clarify the research context of the sponge dty and provide the basis for tiie later research.展开更多
As intensive urban organization form, urban complex emerged with the fast urbanization of our country. Based on the Patch-Corridor-Matrix model, the author analyzed urban complex landscape structure from the macro, me...As intensive urban organization form, urban complex emerged with the fast urbanization of our country. Based on the Patch-Corridor-Matrix model, the author analyzed urban complex landscape structure from the macro, meso and micro level, and also analyzed the relationship between urban complex and urban systems, the interact between functional patches, the landscape process and requirement of people from the three levels, proposed the main points of the planning and design of the environment landscape of urban complex, expect the study above can benefit urban complex＇s practice projects.展开更多
As the revitalization of city culture and the city cultural confidence has been increasingly valued, the ancients' perception and interpretation of mountains, rivers and cultural landscapes, as well as their wisdo...As the revitalization of city culture and the city cultural confidence has been increasingly valued, the ancients' perception and interpretation of mountains, rivers and cultural landscapes, as well as their wisdom in the construction of traditional cities deserve more attention and further exploration. Taking ancient Yiyang City for example, this paper on the basis of local chronicles and literature analyzed the construction history of the city, famous mountains and rivers, and top eight views, and attempted to interpret the construction system of "mountain, river and city" landscape of traditional Chinese cities, in order to provide historical basis and cultural background for revitalizing local cultures and shaping urban landscape patterns, and offer spatial strategies for the city protection and renewal.展开更多
The paper situates itself within a Ph.D. research investigating the relationship between food cultural habits and the built environment, aiming to understand how thinking on sustainable food production and distributio...The paper situates itself within a Ph.D. research investigating the relationship between food cultural habits and the built environment, aiming to understand how thinking on sustainable food production and distribution can help deal in a new way with urban sustainability by considering the cultural principles connected to the Slow Food philosophy. The paper investigates the activities of a small group of Italian wine producers and farmers within the agricultural landscape around Piacenza, and the way they influence the transformation of local urban and rural environments through either the application of the principles promoted by the Slow Food organization, or the creation of alternative “unofficial” strategies. Through the analysis of documents relating to the past and present history of the agricultural territory around Piacenza and its material culture, the presented study aims to understand how historically consolidated contexts are physically transformed through food culture. Considering historical and economic works on the Italian agricultural landscape, the paper stresses the dichotomy between consolidated cultural practices acting on a historically traditional landscape, and the innovation coming from the subversion of those practices, by visualizing them through a qualitative-quantitative gastronomic map of the local territory.展开更多
Detailed and precise urban land-cover maps are crucial for urban-related studies. However, there are limited ways of mapping high-resolution urban land cover over large areas. In this paper, we propose an operational ...Detailed and precise urban land-cover maps are crucial for urban-related studies. However, there are limited ways of mapping high-resolution urban land cover over large areas. In this paper, we propose an operational framework to map urban land cover on the basis of Ziyuan-3 satellite images. Based on this framework, we produced the first high-resolution(2 m) urban land-cover map(Hi-ULCM) covering the 42 major cities of China. The overall accuracy of the Hi-ULCM dataset is 88.55%, of which 14 cities have an overall accuracy of over 90%. Most of the producer’s accuracies and user’s accuracies of the land-cover classes exceed 85%. We further conducted a landscape pattern analysis in the 42 cities based on Hi-ULCM. In terms of the comparison between the 42 cities in China, we found that the difference in the land-cover composition of urban areas is related to the climatic characteristics and urbanization levels, e.g., cities with warm climates generally have higher proportions of green spaces. It is also interesting to find that cities with higher urbanization levels are more habitable, in general. From the landscape viewpoint, the geometric complexity of the landscape increases with the urbanization level.Compared with the existing medium-resolution land-cover/use datasets(at a 30-m resolution), HiULCM represents a significant advance in accurately depicting the detailed land-cover footprint within the urban areas of China, and will be of great use for studies of urban ecosystems.展开更多
As a dominant elernent to urban forest of Shenzhen, the ecological landscaping forest are establishedwith the area of 54 072.5 hectasas （ha） in the 25 years, among which the soil and water conservation forest accoun...As a dominant elernent to urban forest of Shenzhen, the ecological landscaping forest are establishedwith the area of 54 072.5 hectasas （ha） in the 25 years, among which the soil and water conservation forest accounts for 40 879.8 ha, the shelter forest along coastal side and road is 7 245,3 ha and the forest of special utilities is 5 947.4 ha. This project lasts about 30 years, About 25.78% of the task is finished and the budget for it is about 0.213 billion RMB yuan（Renrninbi yuan or yuan） to beautify the human living environment in small ,scale before 2005, The other 74.22% is finisbed between 2006 and 2011. for which the budget is about 0.4 billion yuan in order to improve the ecological environment of Shenzben in large scale. Then the structure and function of the forest system is advanced as a long object befure 2030.展开更多
基金Supported by National Science Fund for Distinguished Young Scholars of China(41102107)Basic Research Program for Technology Innovation,Chang'an University(CHD2012JC080)~~
文摘[Objective] This study aimed to find out effective measures to solve land- scape water eutrophication. [Method] Based on an overview of the urban landscape water characteristics and pollution control situation, taking an example of the artificial lakes in a campus in Xi＇an, we comparatively analyzed the present pollution situation of Xiuyuan Lake and Mingyuan Lake, and provided controlling measures against eutrophication pollution, as well as restoration measures. [Result] All the indicators （TN, TP, Chl-a, NH3-N, CODMn） of the landscape water quality in both Xiuyuan Lake and Mingyuan Lake went severely beyond the Grade IV standards, presenting a state of heavy eutrophication. Nitrogen, phosphorus and other nutrient salts carried by atmospheric precipitation and its runoff, as well as domestic garbage generated by human activities were primary exogenous pollutants of the artificial lakes. And the release of sediment pollutants was endogenous substances causing deterioration of water quality. [Conclusion] This paper presents some measures to control the pollution of artificial lakes, and provides scientific references for the construction, operation and management of artificial lakes, as well as maintenance of aquatic environment.
基金This work was supported by foundation of National Key Fundamental Research and Development Program (2002CB412406)
文摘The spatial pattern of urbanization in the Shanghai metropolitan area is quantified with GIS-based land use data set and gradient analysis of landscape metrics. A number of landscape metrics were computed along a 64 Ion long and 6 km wide west-east transect and another 66 km long and 6 km wide south-north transect. The results of transect analysis with class-level metrics showed that the spatial pattern of urbanization could be reliably quantified using landscape metrics with a gradient analysis approach, and the location of the urbanization center could be identified precisely and consistently with multiple indices of the landscape metrics used in this study. Different land use types exhibited distinctive, but not necessarily unique, spatial signatures that were dependent on specific landscape metrics. These results seemed to characterize the urban core of the Shanghai metropolitan area rather accurately and precisely.. Agriculture patches were abundant and less fragmented; the urban land use types were extensive, having many small patches and highly fragmented.
基金Sponsored by Natural Science Project of Sichuan Provincial Department of Education(15ZA0123)Doctoral Fund of Southwest University of Science and Technology(14zx7136)
文摘Rapid urbanization has led to an increase o f urban artificial landscapes and the transformation of die earths surface, which has caused the dty to lose its functions of flood control and water purificatioiL There are frequent urban flooding and waterlogging, deterioration of water quality in rivets and lakes, and increasing water and environmental problems. In response to these situations, the state proposed the construction of a sponge dty. In this paper, the background and rcsearch significance of the sponge city were expounded, the domestic and foreign related reseatch was summarized, and further thinking about the sponge dty in Chim was put forward, in order to clarify the research context of the sponge dty and provide the basis for tiie later research.
文摘As intensive urban organization form, urban complex emerged with the fast urbanization of our country. Based on the Patch-Corridor-Matrix model, the author analyzed urban complex landscape structure from the macro, meso and micro level, and also analyzed the relationship between urban complex and urban systems, the interact between functional patches, the landscape process and requirement of people from the three levels, proposed the main points of the planning and design of the environment landscape of urban complex, expect the study above can benefit urban complex＇s practice projects.
基金Sponsored by National Natural Science Foundation of China(51608007)Young Top-notch Talent Cultivation Project of North China University of Technology
文摘As the revitalization of city culture and the city cultural confidence has been increasingly valued, the ancients' perception and interpretation of mountains, rivers and cultural landscapes, as well as their wisdom in the construction of traditional cities deserve more attention and further exploration. Taking ancient Yiyang City for example, this paper on the basis of local chronicles and literature analyzed the construction history of the city, famous mountains and rivers, and top eight views, and attempted to interpret the construction system of "mountain, river and city" landscape of traditional Chinese cities, in order to provide historical basis and cultural background for revitalizing local cultures and shaping urban landscape patterns, and offer spatial strategies for the city protection and renewal.
文摘The paper situates itself within a Ph.D. research investigating the relationship between food cultural habits and the built environment, aiming to understand how thinking on sustainable food production and distribution can help deal in a new way with urban sustainability by considering the cultural principles connected to the Slow Food philosophy. The paper investigates the activities of a small group of Italian wine producers and farmers within the agricultural landscape around Piacenza, and the way they influence the transformation of local urban and rural environments through either the application of the principles promoted by the Slow Food organization, or the creation of alternative “unofficial” strategies. Through the analysis of documents relating to the past and present history of the agricultural territory around Piacenza and its material culture, the presented study aims to understand how historically consolidated contexts are physically transformed through food culture. Considering historical and economic works on the Italian agricultural landscape, the paper stresses the dichotomy between consolidated cultural practices acting on a historically traditional landscape, and the innovation coming from the subversion of those practices, by visualizing them through a qualitative-quantitative gastronomic map of the local territory.
基金supported by the National Natural Science Foundation of China (41771360 and 41971295)the National Program for Support of Top-notch Young Professionals, the Hubei Provincial Natural Science Foundation of China (2017CFA029)the National Key Resarch & Development Program of China (2016YFB0501403)。
文摘Detailed and precise urban land-cover maps are crucial for urban-related studies. However, there are limited ways of mapping high-resolution urban land cover over large areas. In this paper, we propose an operational framework to map urban land cover on the basis of Ziyuan-3 satellite images. Based on this framework, we produced the first high-resolution(2 m) urban land-cover map(Hi-ULCM) covering the 42 major cities of China. The overall accuracy of the Hi-ULCM dataset is 88.55%, of which 14 cities have an overall accuracy of over 90%. Most of the producer’s accuracies and user’s accuracies of the land-cover classes exceed 85%. We further conducted a landscape pattern analysis in the 42 cities based on Hi-ULCM. In terms of the comparison between the 42 cities in China, we found that the difference in the land-cover composition of urban areas is related to the climatic characteristics and urbanization levels, e.g., cities with warm climates generally have higher proportions of green spaces. It is also interesting to find that cities with higher urbanization levels are more habitable, in general. From the landscape viewpoint, the geometric complexity of the landscape increases with the urbanization level.Compared with the existing medium-resolution land-cover/use datasets(at a 30-m resolution), HiULCM represents a significant advance in accurately depicting the detailed land-cover footprint within the urban areas of China, and will be of great use for studies of urban ecosystems.
文摘As a dominant elernent to urban forest of Shenzhen, the ecological landscaping forest are establishedwith the area of 54 072.5 hectasas （ha） in the 25 years, among which the soil and water conservation forest accounts for 40 879.8 ha, the shelter forest along coastal side and road is 7 245,3 ha and the forest of special utilities is 5 947.4 ha. This project lasts about 30 years, About 25.78% of the task is finished and the budget for it is about 0.213 billion RMB yuan（Renrninbi yuan or yuan） to beautify the human living environment in small ,scale before 2005, The other 74.22% is finisbed between 2006 and 2011. for which the budget is about 0.4 billion yuan in order to improve the ecological environment of Shenzben in large scale. Then the structure and function of the forest system is advanced as a long object befure 2030.
