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1.
本文根据近几年土地利用统计资料,应用土地经济学原理,对山西省土地利用开发程度和效益进行了分析.结果证明:山西省土地开发利用程度较高,但效益低下。对此用模糊聚类方法,对土地利用进行了综合区划与规划。通过区划与规划对比,指出我省土地利用中存在的问题及以后调整利用方向。  相似文献   

2.
论土地生态规划设计   总被引:18,自引:0,他引:18  
土地生态规划设计是土地生态学研究的核心内容,其理论、方法及应用亟待深入探索和研究.辨析了土地生态规划、土地利用规划和生态规划 3个基本概念,讨论了土地生态规划的本质特征、研究内容和基本原则,介绍了国外土地生态规划设计的主要方法(模型或模式),提出了我国近期内土地生态规划设计研究的主要方向.对促进土地生态规划设计领域的深入探索和研究、推进土地生态学的发展和建设是很有意义的.    相似文献   

3.
以绵阳市城市发展规划区为例,用景观生态学原理方法在探讨城镇规划发展区土地利用生态景观的空间结构基础上,提出城镇土地可持续利用的生态景观途径:编制科学适用的土地利用总体规划;建立土地用途管制体系;开展土地整理,实施综合开发;建立复合稳定的城郊土地生态系统;优化城乡土地配置,建立城镇地价体系;运用现代技术,建立土地资源动态监测管理系统;加强可持续的资源环境观念教育,完善土地法制建设。  相似文献   

4.
丰县大沙河流域农户参与土地整理规划的探索   总被引:1,自引:0,他引:1  
在参与式规划的思想指导下,对江苏省丰县大沙河流域上段荒滩地土地整理规划的农户参与、技术设计、评价反馈、实施管理等方面进行了深入探索.并在此基础上进行了土地整理规划的可行性论证。结果表明:采用参与式方法进行土地整理规划设计,可以充分反映出农户的意愿,符合当地实际,有助于土地整理项目的实施。  相似文献   

5.
区域可持续发展的瓶颈问题和研究方法探讨   总被引:1,自引:0,他引:1  
我国的可持续发展战略最终要通过区域可持续发展规划和发展措施来实现,区域可持续发展规划的拟定和发展措施的确定要考虑到方方面面,尤其土地资源生产潜力、土地资源承载力、环境状况(尤其是水土流失)等瓶颈问题的研究是确定区域可持续发展规划和措施的关键,从理论探讨了区域可持续发展中存在的瓶颈问题,指出了目前研究中存在的问题,并提出了参考的研究方法。  相似文献   

6.
本文在分析了土地利用规划环境影响的机理、评价方法,建立了土地利用规划环境影响评价的方法,并且以衡阳市的土地利用规划为例,验证了本文的评价方法。  相似文献   

7.
用时变线性规划模型制订中长期规划,既能保持线性规划的一般特点,又考虑到目标函数、约束条件的时变性,可把预报与规划结合起来,把发展战略、环境与规划结果统一在一个模型内,方法易于运用普及,能在截机上施行。  相似文献   

8.
将节约集约利用土地资源这一理念全面融入到土地利用规划管理工作当中,制订节约集约型的土地利用规划,是新形势下编制新一轮土地规划的必然趋势,是全面落实科学发展观,提高土地集约利用程度的根本保障。本文从土地利用规划与节约集约利用关系、规划修编方法、规划修编内容以及规划的实施与管理对节约集约型土地利用规划修编进行了论述。  相似文献   

9.
浅谈县级土地利用规划与城镇规划的协调   总被引:2,自引:0,他引:2  
阐述了县级土地利用总体规划与城镇规划间存在的问题,并提出了协高方法。  相似文献   

10.
本文采用定性分析与定量分析相结合,以定量分析为主的方法,对河南省光山县土地资源在农业方面的适宜性进行了评价,目的在于为制定光山县2生产发展规划提供科学今年。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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