城市土地价格波动对房地产业的影响——1999～2005年中国20城市的实证分析

本文利用1999～2005年间的数据对我国地价与房价的关系进行了实证研究.研究结果表明房价对地价有显著影响,地价对房价的影响度较小.在对地价与房价互动传导机制进行研究时,提出了3个传导路径,这些路径上的各个变量大都相互影响.通过分析我们还发现金融支持和土地政策在地价与房价变动中扮演着重要角色,抑制房价不能只控制土地价格,还应从金融支持、投资等方面着手,制定更严格的信贷制度,增加房地产交易税和提高居民可支配收入.本文的研究对于政府制定正确的货币政策和房地产业政策具有积极的参考意义.     

国土资源系统人才现状分析与对策

通过统计报表分析与典型调查相结合的方式，对31个省(区)直辖市的公务员人才状况、16个部直属事业单位人才状况、19个省市县三级单位的人才状况进行了统计分析，同时对5个省级国土资源厅(局)、6个地市县、5个直属事业单位进行了调查分析。在此基础上，我们对国土资源部系统人才现状、存在问题及对策提出建议。     

保障我国农民土地收益的制度分析

近年来，由于制度安排的缺陷，我国农地大量转非，农民利益受到损害，导致大量失地农民出现，危及粮食安全和社会稳定。当前，尽管中央对土地进行了严格管理，但是只是临时政策性的措施。要从根本上解决这些问题，必须从制度创新上寻求可行的途径。为此，本文通过对农民土地利益损失的制度原因分析，并对农地制度固化和创新的风险以及几种可供选择的制度创新方案比较后，认为渐进式的制度改革是符合我国的现实选择。     

推进循环经济发展促进土地可持续利用

循环经济是一种新型的生态经济。发展循环经济对于土地的可持续利用的意义也很重大。本文通过对循环经济的概念和发展情况的阐述．分析了目前我国发展循环经济所面临的问题，提出了发展我国循环经济的对策和措施。     

Buyer-Type Effects in Conservation and Preservation Property Values

Properties can be bought by government agencies, land trusts, or private entities for conservation and preservation purposes, such as farmland preservation, wildlife refuges, other conservation, and cultural and historical preservation. There is variation in the dollars paid per acre across properties and across buyer type. An option value model based on future potential land uses is used to explain much of this variation. The data used in our analysis is sales transactions data for conservation and preservation purposes from throughout the United States. We find that much of the value of conservation properties is derived from future potential land uses, including housing, timber, recreation, and conservation. We confirm that public versus private buyers value options differently, which makes sense from a public good point of view, if markets are thin.     

南贵昆经济区产业分工与合作研究

南贵昆经济区是西部大开发总体规划的重点区域之一。通过产业的分工与合作,建立具有全国地域分工意义的特色产业体系是南贵昆经济区开发的重要内容。本文在对优势产业选择基准、产业比较优势、产业竞争优势分析的基础上,从实证角度研究南贵昆经济区产业分工与合作存在的问题及实现机理。     

Addressing the social landscape dimensions: The need for reconciling cross scale assessments for capturing Cultural Ecosystem Services (CES)

This special issue integrates eleven papers focussing on indicators able to convey the multiple expectations that society has concerning agricultural land. As scale issues have been so far overlooked within this research topic, a particular focus of this themed issue is to highlight the need for reconciling assessments across scales. The shared purpose of the contributions is to examine how the multiple societal expectations concerning agrarian landscapes might be incorporated into land use policy at different governance levels.A core set of these papers were presented in the symposium “Linking social indicators across scales”, to the European Congress of the International Association of Landscape Ecology (IALE) in September 2013 in Manchester, UK. This symposium was organized to create the time and space for a discussion on the issues of scale when capturing societal preferences concerning agrarian landscapes. While the landscape scale was specifically addressed by four papers, seven papers examined broader geographic units in addition to up-scaling and downscaling issues.     

Co-ordination of land exploitation,exploitable farmland reserves and national planning in China

Land exploitation, as an important strategy to mitigate farmland loss and stabilize grain production, has been adopted to compensate farmland loss due to rapid urbanization in China. Bounded by the limited capacity and obvious spatial variations of national farmland reserves, it is essential to arrange land exploitation activities timely and reasonably. In this study, we propose an indicator for the status of regional land exploitation, the Exploitation Degree, to facilitate an overview of land exploitation programs in China at both provincial and prefectural levels based on project data from 2006 to 2012. To further our understanding of the regional features of land exploitation activities, we employ the Lasso model to identify and quantitatively assess influencing factors on land exploitation. Our study shows that: (1) contemporary land exploitation practices in China are significantly inconsistent across exploitable farmland reserves. Some areas are greatly over-exploited and such irrational land exploitation has been persistent; (2) related national land plans designed to guide land exploitation efforts centered on resource-rich regions and critical areas do not function as intended. Therefore, we suggest that China⿿s land exploitation policy shall be improved by reconsidering the orientation of land exploitation policy, coordinating land exploitation activities with productivity improvements and eco-system protection, and enhancing the power and scope of the plans in controlling and guiding land resource management.     

Quantitative micro-scale flood risk assessment in a section of the Trotuș River,Romania

This paper focuses on the estimation of direct damages caused by three flood scenarios with different return periods in the section Făgetul de Sus – Ghimeş – Palanca Pass of Trotuș River, with the aim of highlighting the need of improved land use plans. The damage for three land use classes (residential building, infrastructure and agriculture) were estimated using the damage curves developed by the European Joint Research Centre (JRC) as well as site specific maximum damage values. The data were processed with the help of the ArcMap 10.2 software and FloodRisk tool from QGIS software. Furthermore, the flood risk was assessed using the damage – probability curves, which associates the damage with the corresponding frequency of occurrence. This method was identified and adapted to the characteristics of the study area in order to develop a methodology of flood risk assessment that is answering the question: does the lack of land use plans increase the vulnerability and the flood damage? The results showed that the greatest damages are registered for the residential building land use class for a flood probability of 0.001. In this case the damages reach up to 60% on the scale range of deterioration factor, the total damage value being 2 million euros. For the same hazard probability the total registered damage value for roads is 7500 euro, for railways is around 12,000 euro, while for agriculture is around 84,000 euro. These results highlight the need of protection measures and land use plans development and implementation. Regarding the protection measures we consider that the egalitarianism would be the concept that should be applied in the study area and also an improved cooperation between government, specialized agencies and local authorities at local level would lead to a more efficient flood risk management process. The proposed methodology can be applied for micro-scale analysis, providing quantitative results regarding the flood damage and flood risk assessment. It includes a detailed vulnerability analysis of the elements-at-risk with the aim of developing a more comprehensive approach of flood risk assessment.     

The composite iteration algorithm for finding efficient and financially fair risk-sharing rules

We consider the problem of finding an efficient and fair ex-ante rule for division of an uncertain monetary outcome among a finite number of von Neumann–Morgenstern agents. Efficiency is understood here, as usual, in the sense of Pareto efficiency subject to the feasibility constraint. Fairness is defined as financial fairness with respect to a predetermined pricing functional. We show that efficient and financially fair allocation rules are in one-to-one correspondence with positive eigenvectors of a nonlinear homogeneous and monotone mapping associated to the risk sharing problem. We establish relevant properties of this mapping. On the basis of this, we obtain a proof of existence and uniqueness of solutions via nonlinear Perron–Frobenius theory, as well as a proof of global convergence of the natural iterative algorithm. We argue that this algorithm is computationally attractive, and discuss its rate of convergence.