Using Irrigation Insurance to Improve Water Usage of the Rio Mayo Irrigation System in Northwestern Mexico

In many regions of the world, the timing between rainfall and the cropping season does not coincide creating the necessity for managing water resources. Although reservoirs and irrigation systems can usually guarantee needed water supplies for peak cropping periods within a single crop year, their risk-reducing effectiveness over a period of years can be diminished by annual rainfall and climate variables. The authors investigate a financial instrument based on river flow accumulations—irrigation insurance—to address drought-induced income shocks and water allocation problems. A stochastic simulation based on economic and hydrological characteristics of the Rio Mayo irrigation system in northwestern Mexico is used to study the concept.     

美国以创新性区划促进可支付住宅发展的经验和启示

为满足中低收入家庭的居住需求,美国旨在推动可支付住宅建设的创新性区划得到了快速发展.创新性区划包括弹性区划、奖励性区划和包容性区划等多种形式,创新性区划的实施使美国地方政府在不扩大地方财政支出的前提下,有效增加面向中低收入家庭的可支付住宅的供给,缓解社会中存在的居住隔离状况.本文介绍了创新性区划的发展历程和实践情况,并分析了其所具有的积极作用以及面临的挑战.     

Approach to the Zoning and Management for the Function of Light Environment

Light sources and lighting have brought human beings light culture. Lighting can satisfy not only production and security but also tourism, commerce, and culture. However, light pol- lution caused by the misuse of light source or by poor light distributio…     

我国宏观经济运行的分级分区调控研究述评

本文着重对我国宏观经济运行分级调控和分级分区调控的空间间组织类型与区域单元的研究进行了全面的评述,指明了这一研究的实际进展,阐释了有关宏观经济运行分级调控问题争论的原因以及因操作性强和体制的束而采用的现行分级分区调控模式－“中央一省区”调控模式所造成的弊端。作者指出,该模式实施具有物壹的历史规定性,按照我国经济体制改革的目标,宏观经济运行分级分区调控逐步过渡到符合市场是规律和区域经济发展规律的、按     

How adjustments in land use patterns contribute to drought risk adaptation in a changing climate—A case study in China

In the context of climate change, adaptation to climatic extremes, such as drought, has attracted worldwide attention, yet many practical adaptation strategies need to be examined at the local level. Based on a case study of the village of Beidian, located in a drought-prone region in northern China, this study demonstrates that when faced with multiple pressures of regional climate change, drought risk and rural poverty, reasonable adjustments in land use patterns can serve as an effective adaptation strategy in the agricultural sector. We used household questionnaires, in-depth interviews with village managers, and land use surveys at the farming plot level to quantify the relationship between land use change and drought mitigation effects. Our findings indicate that in the past decade, the farming practices in Beidian have transformed from a complete reliance on the winter wheat–summer corn rotation to a new diversified mode of apple as the main crop and corn and coarse cereals as the subsidiary crops. The current farming mode is proven to possess a stronger adaptive capacity to drought due to its higher water-saving efficiency and economic benefit, which facilitates rural poverty reduction and socio-economic development. This study presents a feasible approach to address adaptation strategies at the local level, which provides policymakers with information on how to best support farm-level adaptation and to reduce farmers’ vulnerability to climatic extremes within the broader context of climate change.     

广东省农业现代化功能区划研究

[目的]农业农村农民问题是关系国计民生的根本性问题,没有农业农村的现代化,就没有国家的现代化。了解广东省农业基本功能,区分全省各县(市、区)当前农业主导功能的类型,能够明确各地未来农业发展方向和重点,对促进农业供给侧结构性改革和农业现代化发展具有重要意义。[方法]根据广东省实际情况,以省121个县(市、区)为基该研究对象,文章选取了25个定量指标,采用主成分分析和聚类分析的方法研究全省各地农业主导功能。[结果]综合考虑农业资源禀赋、规模结构、农村经济、农田生态、居民休闲和区域特色文化等多项指标,文章将全省划分为农产品供给、就业和生活保障、文化传承和休闲、生态调节四大主导功能区,各县(市、区)都具备一种或两种以上农业主导功能,实现从农业主导功能和县域两个维度来分析全省农业主导功能覆盖的县域范围和各县具备的主要农业功能。[结论]"十三五"期间,要重点完成现代农业产业园、粮食功能区、特色农产品优势区、农业公园、田园综合体、农业面源污染治理项目等任务,拓展全省各区域农业功能,试图探索具有广东特色的农业现代化发展方式与发展途径。     

从区域经济协调发展理论看我国区域经济规划方案

运用区域经经济协调发展理论,解读2009年我国先后发布的9个区域经济规划,考量发布实施一系列经济计划的深层次原因,分析以前我国区域经济规划的缺陷以及县域经济发展的缺陷,论述区域经济协调发展的必要性,探讨为了保证我国区域经济规划能够得以顺利实施需要防范和解决的问题。     

概念规划对中国土地利用总体规划的启示

研究目的:把概念规划引入土地利用总体规划,完善其编制方法.研究方法:文献资料分析法、比较分析法.研究结果:概念规划是为城市规划服务的,通过与土地利用战略研究的对比可知,概念规划的理念与方法可引入土地利用总体规划中.研究结论:引入概念规划理念与方法,强化土地利用战略研究,引导空间分区,指导用地指标分解以及用途管制规则,促使指标控制与分区控制相结合.     

对我国开展矿产资源综合区划相关问题的思考

开展矿产资源综合区划是落实国家战略、保障我国资源安全的必然要求,同时也是矿产资源区划研究的重要趋势。在阐述开展矿产资源综合区划必要性和可行性的基础上,探讨了对矿产资源综合区划概念、内涵、特点、区划体系,以及划分方法与指标体系设计等方面的思考认识,以期为我国矿产资源综合区划的实证研究提供参考。