基于能值分析的新疆阜康市绿洲系统可持续性分析   总被引：1，自引：0，他引：1  

张雯  李秀彬  王秀红 《资源与生态学报(英文版)》2011,(3):241-249

绿洲是我国西北干旱区人类赖以生存和发展的栖息地,其生态环境脆弱。因此,对绿洲系统经济生态效益的定量评估与分析是我国西北地区生态建设和可持续发展急需解决的现实问题。本文以天山北麓的新疆维吾尔自治区阜康市为例,深入探讨了绿洲系统的生态经济效益及其年际变化;并利用线性规划模型建立了基于能值分析的阜康市绿洲种植业结构优化配置方案。研究发现,阜康绿洲系统的发展受土地、气候和水资源等限制,属于典型的高投入、低产出模式。1996-2006年间,绿洲系统处于弱可持续发展状态。另外,通过生态经济学的绿洲作物结构比较优势分析发现：不同的生态经济目标,其种植业结构也随之变化。当追求生态经济效益最大化时,种植业结构由能值密度决定;当追求水资源限制下生态经济效益最大化时,种植业结构由单位灌溉水量的能值产出决定。  相似文献   

许昌市地质环境恶化问题及防治对策     

腾孟卿  温同想 《河南国土资源》1995,(3)

本文利用近期地质环境监测资料，对许昌市地质环境恶化问题作了简述，并提出了防治措施。  相似文献   

The position and role of Wuhan City in the regional economic macro-strategies of China     

Liu Miaolong  Tu Jianhua 《中国地理科学(英文版)》1997,8(2):106-116

Taking the development of export-oriented economy (the strength and temporal sequence) as a main line, this paper discusses and analyses the position and role of Wuhan, which is the biggest metropolis in the central China and the middle section of the Changjiang (Yangtze) River basin, in the regional economic macro-strategy of China from a new visual sight. On the basis of the background of a large economic triangle constructed by Hongkong, Wuhan and Shanghai, the paper discusses the relations between Wuhan and Hongkong, Wuhan and Shanghai. The aim of the paper is to provide some new evidences for the development of great regional economy of China under the copropelling of the three great economic pivots. Supported by the National Natural Science Foundation of China.  相似文献   

宝鸡城市地质环境质量评价研究     

黄建军  李雪梅 《地球科学与环境学报》2001,23(1):50-53

系统论述了宝鸡城市地质环境状况以及目前城市建设中面临的斜坡稳定性、水土流失、地下水污染等主要环境地质问题，采用环境系统要素综合定量法对宝鸡城市地质环境质量进行了评价分析。  相似文献   

Sustainable development of the seriously polluted cities in China     

Cui Fengjun  Yang Xinjun 《中国地理科学(英文版)》1997,8(4):343-351

The environmental problems in the seriously polluted cities in China have been paid attention to by policy-makers and foreign and domestic scholars. However, it is very difficult to improve the environmental quality fundamentally due to its complexity, for example the formation of the seriously deteriorated environment. It is considered that the terminal harnessing is an important way, but the spread of high-level terminal treatment is restricted by the limit of funds and technological level. Therefore, the way for a sustainable development of the seriously polluted cities should be multiple-sided, which is to correlate the operation of environmental protection with the operation of city construction. To achieve an identity of these opposites, measures should be taken during economic development and environmental protection in every developing stage. In this paper, the authors take Benxi City as a case study.  相似文献   

钱塘江上游地质地貌背景与洪水的关系     

章人骏 《浙江国土资源》2002,18(1):48-52

作者首先叙述了钱塘江水系地理概况和洪水简史 ,认为 :季风气候条件和七里泷峡谷对洪水的阻挡是洪水形成的两种主要原因。本文提出下列见解 :(1)根据河床砂砾滩的分布探讨洪水时期河流的沉积、堆积作用 ;(2)支流河口砂砾滩对主河道的阻塞 ,以及 (3)河床砂砾滩对于内河航运业超前衰亡的严重影响  相似文献   

城市综合功能GIS框架结构研究     

龚强 《地理信息世界》2002,(1)

城市综合功能GIS是城市重要的基础设施 ,它是实现城市可持续发展的基本保证之一。城市综合功能GIS的基本框架结构分为基础层、专题基础层、专题层和综合层。其特点是功能强大、结构复杂、数据多样 ,服务广泛  相似文献   

新密大平—超化滑动构造特征分析     

李诗芳  刘淑红  姚巧芝  刘建周 《河南国土资源》2001,(2)

本文从边界构造、滑动形态特征与力学性质、滑动系统、下伏系统、运动方向等方面 ,系统地分析研究了新密大平—超化滑动构造的总体特征。新密大平—超化滑动构造南北以背斜为界 ,东西受断层切割 ;滑面具有穿层现象且次级滑面发育 ;其力学性质为压扭性 ,南翼还兼有张性 ;滑动系统总体表现为向斜构造 ;滑动方向晚期呈现出先南后北的特征。  相似文献   

Character and Causes of Population Distribution in Shenyang City, China   总被引：1，自引：0，他引：1  

DU Guoming ZHANG Shuwen ZHANG Youquan 《中国地理科学(英文版)》2006,16(3):217-222

1 Introduction Research on the character of urban population distribu- tion is one of the focuses of western urban geography. From the 1950s, the research has attracted the attention of many western researchers, and a series of classical theoretical models were put forward. For example, Clark (1951) found that with the increase of distance from the city center, the urban population density tends to de- crease in exponential. Through the statistical analysis of more than 20 cities, he put forw…  相似文献   

Analysis on the situation and countermeasures of water resources supply and demand in the cities of small and medium-sized river basins along southeast coast of China — taking Xiamen City as an example          下载免费PDF全文

Liu Chun-lei  Zheng Jian-hua  Li Zheng-hong  Li Ya-song  Hao Qi-chen  Li Jian-feng 《地下水科学与工程》2021,9(4):350-358

The small and medium-sized river basins along southeast coast of China hold comparatively abundant water resources. However, the rapid resources urbanization in recent years has produced a series of water problems such as deterioration of river water quality, water shortage and exacerbated floods, which have constrained urban economic development. By applying the principle of triple supply-demand equilibrium, this paper focuses on the estimation of levels of water supply and demand in 2030 at different guarantee probabilities, with a case study of Xiamen city. The results show that water shortage and inefficient utilization are main problems in the city, as the future water supply looks daunting, and a water shortage may hit nearly 2 × 10⁸ m³ in an extraordinarily dry year. Based on current water supply-demand gap and its trend, this paper proposes countermeasures and suggestions for developing and utilizing groundwater resources and improving the utilization rate of water resources, which can supply as a reference for other southeast middle-to-small-sized basin cities in terms of sustainable water resources and water environment protection.  相似文献