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Search Results: 1 - 10 of 268154 matches for " Yulin city<br> "
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The causes of land landscape changes in semi-arid area of Northwest China: a case study of Yulin city

GUO Liying,REN Zhiyuan,LIU Yansui,

地理学报 , 2006,
Abstract: Rapid land landscape change has taken place in many arid and semi-arid regions such as the vulnerable ecological area over the last decade. In this paper, we quantified land landscape change of Yulin in this area between 1985 and 2000 using remote sensing and GIS. It was found that fallow landscape decreased by 125,148 hm2 while grassland and woodland increased by 107,975 hm2 and 17,157 hm2, respectively. The major factors responsible for these changes are identified as the change in the government policy on preserving the environment, continued growth in mining, and urbanization. The efforts in restoring the deteriorated ecosystem have reaped certain benefits in reducing the spatial extent of sandy land through replacement by non-irrigated farmland, woodland and grassland. On the other hand, continued expansion of mining industry and urbanization has exerted adverse impacts on the land landscape. At present regional economic development conflicts directly with the protection of the natural environment. Such a conflict has caused the destruction to the land resources and fragmentation of the landscape accompanied by land desertification, the case is even serious in some localities.
The causes of land landscape changes in semi-arid area of Northwest China:a case study of Yulin city
中国西北半干旱区土地景观变化成因--以榆林市为例

GUO Liying,REN Zhiyuan,LIU Yansui,
郭丽英
,任志远,刘彦随

地理学报(英文版) , 2006,
Abstract: Rapid land landscape change has taken place in many arid and semi-arid regions such as the vulnerable ecological area over the last decade. In this paper, we quantified land landscape change of Yulin in this area between 1985 and 2000 using remote sensing and GIS. It was found that fallow landscape decreased by 125,148 hm2 while grassland and woodland increased by 107,975 hm2 and 17,157 hm2, respectively. The major factors responsible for these changes are identified as the change in the government policy on preserving the environment, continued growth in mining, and urbanization. The efforts in restoring the deteriorated ecosystem have reaped certain benefits in reducing the spatial extent of sandy land through replacement by non-irrigated farmland, woodland and grassland. On the other hand, continued expansion of mining industry and urbanization has exerted adverse impacts on the land landscape. At present regional economic development conflicts directly with the protection of the natural environment. Such a conflict has caused the destruction to the land resources and fragmentation of the landscape accompanied by land desertification, the case is even serious in some localities.
Countermeasures on Adjustment of Regional Industry Structures Under Climatic Drying Change——A Case Study of Yulin City
干旱化背景下区域产业发展适应对策——以陕北榆林市为例

LIU Xiaoqiong,LIU Yansui,
刘晓琼
,刘彦随

地理科学进展 , 2006,
Abstract: 陕北榆林市既是我国重要的能源重化工基地,又是生态环境极端脆弱的危急区。如何在气候干旱化背景下围绕事关区域经济可持续发展的先导因素——水资源,实现能源矿产资源可持续开发,保障基地的稳定发展是关系能源重化工基地生死存亡并危及国家能源安全的大事。本文通过分析研究区气候变化及区域产业发展面临的各类问题,提出应在科学发展观指导下,以保护性利用水资源为核心,因地制宜地选用发展农业对策,促进能源矿产资源合理开发。
Analysis of the land landscape changes and its driving mechanism in vulnerable ecological area: a case study of Yulin city
生态脆弱区土地利用格局变化及其驱动机制分析 ——以陕西榆林市为例

GUO Li-ying,LIU Yan-sui,GUO Li-ying,REN Zhi-yuan,
郭丽英
,刘彦随,郭丽英,任志远

资源科学 , 2005,
Abstract: In this study we quantified land landscape change in the vulnerable ecological area of Yulin city between 1985 and 2000 using remote sensing and GIS in conjunction with landscape modeling. It was found that fallow land decreased by 125,147 hm2 while grassland and woodland increased by 107,975 and 17,157 hm2, respectively. The three most prominent changes were from fallow land to grassland at 129,926 hm2, and degradation of grassland from a higher cover density to a lower one at 16,996 hm2 , and from grassland to woodland at 15,651 hm2. The major factors responsible for these changes are identified as the change in the government policy on preserving the environment, continued growth in mining, and urbanization. It is concluded that as arid Yulin city has a highly vulnerable landscape that is sensitive to fluctuations in the natural environment and to changes in government land use policy. The efforts in restoring the deteriorated ecosystem have reaped certain benefits in reducing the spatial extent of sandy land through replacement by non-irrigated farmland, woodland and grassland. On the other hand, continued growth in mining and urbanization has exerted adverse impacts on the land landscape. At present regional economic development is in direct conflict with the protection of the natural environment. Such a conflict has caused the destruction to the land resources and fragmentation of the landscape accompanied by land desertification, even seriously in some localities.
Harmonious Interactions between Economic Development and Ecological Environment Conservation in Resource-Rich and Economy-Poor Regions: A Case in Yulin City, Shaanxi Province
资源富集贫困地区经济发展与生态环境协调互动作用初探——以陕西省榆林市为例

LIU Gang,SHEN Lei,LIU Xiao-jie,YU Xiao-dong,LI Ang-d,ZHANG Fei-fei,ZHENG Hua-yu,
刘刚
,沈镭,刘晓洁,余小东,李昂达,张菲菲,郑华玉

资源科学 , 2007,
Abstract: Yulin city is one of the most important bases for energy and chemical industry in China.It's so famous for its rich natural resources,poor economy,and fragile ecology that it is called the typical region with rich natural resources and poor economy.This paper analyzed the relationship between GDP per capita and the "three wastes" of industry.It is found that there is a good EKC characteristic between GDP per capita and the amount of industrial waste water discharge,waste gas emission and solid waste disposal.An integrated indicator system for environment pollution assessment was set up to draw out the EKC between economic development and environment pollution based on the data processing and AHP analysis.This curve was similar to that in western area,undeveloped area and other mining cities.There would be no possibility to come forth an inflexion under current developing modes.And the relationship of integrated pollution level(Y) and GDP per capita can be shown in the formula: Y=2.2021x~3-3.0501x~2+1.6999x+0.0577(R~2=0.763).Generally speaking,there are some common factors between economic development and ecological environment conservation,such as industry structure,energy structure,technical level,environmental policy and so on.The complexity of interactions between them was determined by such two main characteristics as a booming city with rich natural resources and poor ecological buffer area.On the basis of analyzing harmonious interactions between economic development and ecological environment conservation,some measures and suggestions were put forward as follows: 1) eco-compensation policies such as Regional transfer payments,fiscal subsidies and population relocation policies should be introduced immediately;2) industrial structure should be Optimized,and infant and alternative industry such as tourism and logistics should be vigorously developed;3) policies in finance,taxation,environmental protection should be improved and investment for pollution prevention should be increased;4) regional cooperation should be strengthened and a new road map for industrialization should be developed for a earlier turning of EKC in Yulin.
The Land Use Change and Its Eco-environmental Effects in Transitional Agro-pastoral Region--A Case Study of Yulin City in Northern Shaanxi Province
北方农牧交错带土地利用变化及其生态环境效应--以陕北榆林市为例

YANG Shuhe,YAN Haili,GUO Liying,
杨述河
,闫海利,郭丽英

地理科学进展 , 2004,
Abstract: Based on the data of land use/land cover of Yulin in northern Shaanxi, the process of land use change and its eco-environmental effects were quantified and analyzed, the results indicate: the land use pattern had a large change in the last 15 years. Farmland decreased by 405.98 hm2, and forestland and grassland increased by 17 157.02 hm2 and 107 975.17 hm2. The transitional quantities of no use land to grassland are the largest, and the following is degradation of grassland. The general quality of regional eco-environment has improved in the last 15 years. However, the trends of both improvement and degradation in eco-environment were coexist, and displayed their spatial heterogeneity in county-level. The land use change in Yulin has obvious regional difference, and in north wind-sand area the change is more serious and the process of land use change is more active. The spatial rule of eco-environmental effect caused by land use change presents: wind-sand area in north has a better improvement in eco-environment than that of hilly-donga in south. The main factors causing eco-environment change of improvement and degradation are transition of forest and grassland, and tree planting and forestation have the most distribution to the improvement of eco-environment, with its distribution ratio 74.8%.
A GIS-based research on the distribution of rural settlements in Yulin of northern Shaanxi

ZHAO Mu-dan,TANG Guo-an,SHI Wen-zhong,LIU Yong-mei,

地理学报 , 2002,
Abstract: The development and distribution pattern of rural settlements was greatly limited by their natural and social environment. Taking Yulin prefecture in northern Shaanxi’s Loess Plateau area as an example, 1:250,000 map-scale national geographical database as a major information source, a GIS-based research was conducted to investigate the spatial distribution of the rural settlements. In this paper, many significant characteristics of the rural settlement distribution are reviewed by means of a series of GIS-based information processing methodology. The results obtained in this study should be helpful for the urban and rural settlements reconstruction planning in this area.
Landscape change detection in Yulin prefecture

ZHAN Jinyan,DENG Xiangzheng,YUE Tianxiang,

地理学报 , 2004,
Abstract: Landscape is a dynamic phenomenon that almost continuously changes. The overall change of a landscape is the result of complex and interacting natural and spontaneous processes and planned actions by man. However, numerous activities by a large number of individuals are not concerted and contribute to the autonomous evolution of the landscape in a similar way as natural processes do. There is a well-established need to detect land use and ecological change so that appropriate policies for the regional sustainable development can be developed. Landscape change detection is considered to be effectively repeated surveillance and needs especially strict protocols to identify landscape change. This paper developed a series of technical frameworks on landscape detection based on Landsat Thematic Mapper (TM) Data. Through human-machine interactive interpretation, the interpretation precision was 92.00% in 1986 and 89.73% in 2000. Based on the interpretation results of TM images and taking Yulin prefecture as a case study area, the area of main landscape types was summarized respectively in 1986 and 2000. The landscape pattern changes in Yulin could be divided into ten types.
Mechanism and regulation of land degradation in Yulin district

LIU Yansui,ZHANG Xiaoping,LI Xianwen,Jay Gao,

地理学报 , 2003,
Abstract: Yulin district is located in the transitional zone between Mu Us Desert and Loess Plateau of northern Shaanxi Province, thus it is particularly vulnerable to degradation due to its fragile ecosystem and intense human activities there. The purpose of this study is to explore the mechanism, process and driving force of land degradation in area with vulnerable eco-environment within the context of increasing population and intensifying human economic activities, and then find out the patterns and countermeasures of how to control them using the economic and technological ways. In detail, this study includes three main sections: the first section analyzes the mechanism, causes and characteristics of land degradation, which can be achieved by the typical field investigations and systematical analysis within the regional natural, social and economic context. Based on the technologies of remote sensing and GIS, and combined with the modeling methods, the second section reveals the change characteristics of land use and its driving force from 1990 to 2000; As to the third section, feasible countermeasures of how to prevent the degradation and rehabilitate the regional ecology are proposed, which are studied from the perspective of harmony between nature and economy, and the conception of regional sustainable development.
咸宁市低碳城市发展对策研究
Study on Countermeasures of Low-Carbon-City Development in Xianning City
 [PDF]

朱俊成, 李玲
Journal of Low Carbon Economy (JLCE) , 2013, DOI: 10.12677/JLCE.2013.23017
Abstract:
低碳城市是低碳经济的核心,也是培育与提升区域综合实力与软实力的重要因子,并成为影响和制约区域持续与健康发展的关键因素。基于国内外低碳城市建设实践经验与区域转型发展的技术路线,并根据低碳城市建设与发展的关键问题,从输入环节、中间环节、输出环节三个方面,构建了咸宁市低碳城市发展的政策机制、产业经济路径、生活消费模式、支撑体系等战略路径。
Low-carbon city is the core of low-carbon economy development, and is also the effective factor for cultivating and improving regional comprehensive competition power and soft power. It became the key factor of effecting and constraining regional sustained and sound development. Based on the technical road and practical experience of low-carbon city construction and regional development transformation at home and abroad, and according to the key problem of low carbon city construction and development, this paper put forward the road of low-carbon city development on the perspective of development policy, industry economic path, consumption patterns, support system strategic path of low-carbon city development for Xianning City.
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