Relationship between Rural Industry Revitalization and Land Resource Utilization and Its Practice in Ganning Town, Wanzhou District of Chongqing

[Objectives]To explore the relationship between rural industry revitalization and land resource utilization.[Methods]Starting from the connotation of rural industry revitalization and land resource utilization,this study explores the relationship between rural industry revitalization and land resource utilization,Taking Ganning Town with typical mountain industry as the research area,this paper analyzed the relationship between rural industry revitalization and land resource utilization through a combination of field research and literature analysis,found out the existing problems and came up with pertinent recommendations.[Results](i)Rural industry revitalization is both mutually reinforcing and mutually restrictive.(ii)In this study,the land use types of Ganning Town were divided into nine categories,including farmland,garden land,forest land and grassland,and their industrial functions and development models were identified,and the corresponding framework of land resource utilization and rural industry revitalization in Ganning Town was constructed.(iii)In view of the problems existing in Ganning Town,this paper proposed to change the ideological concept and enhance understanding,improve the utilization rate of idle land and promote rural industry revitalization,and accelerate land consolidation and restoration,and promote sustainable development.[Conclusions]It is necessary to correctly understand the two-way role and dynamic change relationship between rural industry revitalization and land resource utilization,solve the problem from the perspective of development,adopt development strategies according to local conditions,and take the road of sustainable development.

Relationship between Housing Price and Land Price Based on Grey Relational Analysis

In recent Years, China＇s real estate market has been rapid developed, and real estate has become a hot spot of consumption and investment. In some large and medium-sized cities there has been a rapid rise in housing prices. The rapid rise in housing prices has led to difficulties in the purchase of houses in some cities and towns, and this phenomenon has aroused the attention and con- cern of all walks of life. Housing is the basic human life needs. Housing problem is not only an economic problem, but also a social problem. The relationship between house price and land price and the effective control of housing prices have become the focus of government and scholars. Thus, grey relational analysis is used to ana- lyze the relationship between housing prices and land prices, and the grey relational coefficients are calculated.

The harmonious relationship between land use and environment in Xi’an

In this paper we adopt annual land use conditions change data, land sifting data, social, economic and population data and environment information of nine districts and four counties in Xi＇an city from 1980 to 2000 to analyze its structural and degree change of land use since the 1980s, and calculate the benefits and transformation of land use type. The results show that the non-agricultural land increased rapidly, especially the urban and rural residential spots and industrial and mining （RIM） land use increased mostly rapidly, an increase of 64%. Meanwhile, the intensity of land exploitation was accelerating, land was transformed to industries with better benefit and areas experiencing faster urbanization process. By analyzing the harmonious degree of land exploitation in economic and environmental aspects, we find out that the land use imbalance mainly existed in the municipal area of Xi＇an, and the imbalance index of land use based on GDP and non-agricultural population were respectively 12.37 and 14.67 in 2000, which were far higher than those in other regions. Nevertheless the environmental harmonious degree in the municipal area of Xi＇an ranges between 0.6 and 0.8, which was better than that of suburban area. Some proposals addressing to the problems of harmonious level in all scales, resources utilization, projects management and feasibility analysis and intensive urbanization are also put forward.

Dynamic Scaling of the Generalized Complementary Relationship Improves Long-term Tendency Estimates in Land Evaporation

Most large-scale evapotranspiration(ET)estimation methods require detailed information of land use,land cover,and/or soil type on top of various atmospheric measurements.The complementary relationship of evaporation(CR)takes advantage of the inherent dynamic feedback mechanisms found in the soil−vegetation−atmosphere interface for its estimation of ET rates without the need of such biogeophysical data.ET estimates over the conterminous United States by a new,globally calibrated,static scaling(GCR-stat)of the generalized complementary relationship(GCR)of evaporation were compared to similar estimates of an existing,calibration-free version(GCR-dyn)of the GCR that employs a temporally varying dynamic scaling.Simplified annual water balances of 327 medium and 18 large watersheds served as ground-truth ET values.With long-term monthly mean forcing,GCR-stat(also utilizing precipitation measurements)outperforms GCR-dyn as the latter cannot fully take advantage of its dynamic scaling with such data of reduced temporal variability.However,in a continuous monthly simulation,GCR-dyn is on a par with GCR-stat,and especially excels in reproducing long-term tendencies in annual catchment ET rates even though it does not require precipitation information.The same GCR-dyn estimates were also compared to similar estimates of eight other popular ET products and they generally outperform all of them.For this reason,a dynamic scaling of the GCR is recommended over a static one for modeling long-term behavior of terrestrial ET.

Development of Qinba Mountainous Area in the Historical Period from the Perspective of Man-Land Relationship

Taking agricultural development as the starting point,this paper explored the dynamic mechanism and implementation path of agricultural development in Qinba Mountainous Area from the perspective of man-land relationship. It found the regular understanding of ecological changes in Qinba Mountains. It is a comprehensive review and exploration on agricultural development and environmental evolution,and aims to provide a historical reference for the development of the contemporary Qinba Mountains.

Vegetation Cover Density and Land Surface Temperature Interrelationship Using Satellite Data, Case Study of Wadi Bisha, South KSA

The aim of this study is to identify the relationship between Vegetation Cover (VC) and the land Surface Temperature (LST), using satellite data of Wadi Bisha, south the Kingdome of Saudi Arabia (KSA). The Landsat 7 Thematic Mapper (ETM) thermal band (band 6) was used for calculating the (LST) values. The near-infrared (NIR) and red band (bands 3 and 4 respectively) were used for estimating the vegetation cover. ERDAS Imagine 9.3 and ArcGIS 10.2 were used in the current study. The results of the study show that the increase of vegetation cover (VC) coincides with decrease of (LST), while the decrease in vegetation cover is linked with increase of (LST). It was found that there was no vegetation observed in areas practiced the highest temperature of 49℃, while areas of lowest temperature of 28℃ were characterized by dense vegetation cover. Thus, a quite significant correlation is approved between the (VC) and the (LST), based on the validation of (50) locations. It was concluded that availability and continuity of Satellite remote sensing data was required for elaborating a continuous monitoring of vegetation cover conditions and mapping was recommended in Wadi Bisha. Operational monitoring is recommended to ensure the adoption of flexible land cover validation protocols.

关中盆地新石器时期水沟遗址人类活动与自然地理环境适宜性研究

本研究通过对关中盆地西部新石器时期水沟遗址人类活动的灰坑、文化层、房址、陶窑和陶器等遗迹、遗物做了详细的梳理分析,理解区域古人类活动的特征,系统地开展水沟文化层剖面环境磁学和AMS14C年代学研究,恢复该区全新世以来气候变化和古人类活动历史,结果表明:水沟新石器时期古人类活动时间为全新世中期5 530~4 300 a B.P.的气候适宜期,其文化发展处在寒冷干燥向温暖湿润转换的过渡阶段。在GIS空间分析技术支持下提取影响水沟遗迹分布的海拔、坡度、坡向和距水源距离因子,构建指数模型,分析新石器时期水沟遗址古人类活动的自然地理环境适宜性分布规律,主要集中在海拔900~960 m,坡度小于6°,坡向朝南,距水源距离小于200 m的自然环境条件优越的区域,并进一步探讨了古人类活动对环境变化的响应与适应的过程和机制。

无人经济趋势下的未来城市空间创新与规划应对

聚焦无人化趋势下的城市新型人地关系,结合无人化趋势带来的业态创新和就业模式变化,推演未来可能出现的无人化场景及其对规划技术提出的新挑战,由此得出如下新趋势并提出相应的规划应对设想:在无人化趋势下,以人定地的空间规模预测方式的适用性会降低,需要在系统考虑机器换人对各类用地影响的基础上确定城镇空间发展规模;无人化生产和劳动力替代将在一定程度上重构现有的产城空间格局,未来需要加强对无人化产业空间的学术研究和规划技术研究;未来城市会出现大量“人—机”共存交互的空间场景并产生相应的治理难题,急需从时空行为活动导控方面探索提升建成空间利用效率的规划新理论和新方法。

自然地理学与人文地理学整合之我见

在当代地理学中,自然地理学与人文地理学两个分支学科分裂严重,从论题到发表乃至对话对象。因此两者的关系值得讨论。维持地理学的综合性有助于发挥地理学的优势,应对综合性问题、全球性问题。人地关系和区域地理学是避免地理学分裂的具体途径,GIS可以成为弥合两者的工具。大众对地理学的科普需求是区域地理,这是地理学满足社会需求需要的重要方式。着眼于科学普及的区域地理学著作有助于提高学科的社会认同度。

考虑水土互馈关系的区域水土资源联合优化配置

针对水土资源空间不匹配、水资源总量不足及土地资源利用程度不高等问题,以二元水循环理论为基础,构建考虑水土互馈关系的区域水土资源联合优化配置模型。该模型包括产水模块、水土联合配置模块和土地模拟模块,以GDP最大和基于生态绿当量的区域植被覆盖率(EGE-RVC)最高为目标函数,并提出了一种耦合约束法、逐次逼近法和非线性规划的三层嵌套算法进行求解。以河南省洛阳市为例对模型和方法进行验证,结果表明,洛阳市可利用水量增加了4463万m^(3),GDP提高了12.5%,EGE-RVC增加了2.6%,各用地类型缺水率不同程度下降。研究成果能够为区域水土资源优化配置研究提供新的思路和技术参考。

乡村秩序的空间基础:一个人地关系的分析框架

村落空间不仅是村庄社会关系运作的背景,而且定义了乡村秩序再生产的底层架构。人地关系是村落空间的基础,且在农民土地利用实践中推动村落空间的功能分化,并逐渐形成生产空间与生活空间的分化与融合、公共空间与私人空间的分化与互通。村落空间兼有自然底色与社会面向,集体土地制度调控维系了村落空间结构的有机整合。城市化进程推动村落空间转型,生产空间与生活空间的分离、公共空间与私人空间的断裂可能导致村落空间的秩序紊乱。为此,须将人地关系纳入集体土地制度调控,在农民流动的社会场景中建构富有包容性和适应性的村落空间秩序。

深圳市轨道交通车站与土地利用互动性研究

城市轨道交通与土地利用发展相互影响,两者协调发展有助于缓解城市交通拥堵,是城市可持续发展的关键问题之一.利用中国深圳市1999年与2015年的建筑普查、土地利用以及轨道交通车站刷卡数据,从开发强度、用地信息熵、车站类型及早晚高峰客流量等多个指标精细化分析轨道交通车站运能与周边土地利用之间的内在联系,并引入“节点-场所”模型构建指标体系评价轨道交通车站与土地利用间的发展协调程度,利用k-means聚类分析将二者协调状态划分为从属状态、平衡状态及失衡状态.结果表明,随着轨道交通车站开发建设,深圳市轨道交通车站周边土地集约利用水平提高;车站客流量与周边土地利用指标的相关性显著,全天客流量与容积率和商办建筑面积显著正相关,早高峰客流量与居住建筑面积和建筑密度显著正相关,而与容积率显著负相关,晚高峰客流量则与商办建筑面积和道路网密度显著正相关.深圳市轨道交通车站与站点周边土地利用协调发展水平偏低,站点类型以节点和场所价值低度均衡发展的从属状态为主,而协调状态则较少且集中分布在中心区圈层.未来应进一步对失衡节点地区采取针对性的开发策略,提升集聚效应与服务水平.

流动的非粮种植与二元土地流转市场——一项土地流转中农业经营模式的双案例分析

造成土地流转市场分化现象的因素不仅包括土地禀赋、流转主体和外在环境,农业经营模式本身也会产生影响。根据不同作物的种植特性,以作物-土地关联机制为切入点,对山东某地区的非粮种植及其参照案例进行比较。研究发现,非粮种植和粮食种植之间不同的作物-土地关联机制影响经营流动性,非粮作物需要流动经营,粮食作物采取固定经营。不同的作物类型和经营模式对土地流转市场产生影响,导致流转对象、合约形式和流转价格发生分化,呈现出二元土地流转市场形态。特别是非粮作物与粮食作物在土壤损害、种植风险、关系强度和交易成本等方面的差异,导致非粮种植的土地流转价格远高于粮食种植。

辽南海岛型村落空间结构特征分析

要辽南长山群岛位于辽宁省大连市,其四面环海的地理特征导致其村落的生产、生活功能紧密依附自然环境,并在此发展着独特的人居模式。作为一种自诞生就与大陆相隔的生态系统,其空间上的功能组成与结构特征与当地特殊的自然环境紧密相连,具有鲜明的环境特征,海岛型村落则是特殊自然环境下体现人地关系的代表性人居场所。该文结构上采用“宏观—中观—微观”的思维逻辑,对辽南长山群岛整体进行调查研究,并以“人地关系”为出发点,采用一系列图底关系的研究方式对村落各类型空间进行分析并总结出其结构特征,为海岛型村落未来的保护与更新提供设计思路。

“自然-人文”融合视角下的西南山区小流域划分与整合

【目的】采用“自然-人文”融合的视角,结合人文要素界定小流域划分阈值,强化小流域划分研究的人文特征,为以小流域为基本单元的山区开展国土空间开发和社会经济建设提供区划方案支持。【方法】根据小流域自然水文过程和人文属性因素,利用流域面积法结合均值变点法及边界重叠度概念,以我国西南山区为例,对研究区内6个流域试验区进行小流域划分阈值测算,在得到最佳阈值的基础上,对西南山区以小流域为单元进行划分,并整合划分结果,分析、整合结果的数量与空间特征,提出一种山区小流域划分的融合方法。【结果】①西南山区小流域划分的最佳阈值为30.00 km^(2);②西南山区小流域数量为16075个,面积范围为25.07~431.82 km^(2);③从面积来看,小于50.00 km^(2)的小流域为8702个,占比54.13%,介于50.00~100.00 km^(2)的小流域为5358个,占比33.33%,大于100.00 km^(2)的小流域为2015个,占比12.53%,基本符合当前水利部要求。【结论】通过西南山区实测验证,本研究提出的山区小流域划分与整合方法在结果上能体现小流域的自然与人文属性特征,较好符合当前山区组织单元管理的需要,可为山区小流域区划提供方法借鉴。

论乡村教师职业角色的脱域区隔与空间重构

乡村教师职业角色涵盖空间性和教育性,对应教师职业角色的工作环境、社会地位体现及自我与他者的期望,需要从乡村的物质空间、社会空间和文化空间出发来审视乡村教师职业角色,才能对其形成较为完整的认识。乡村教师职业角色因而具有了乡土生成的特性、专业性与公共性的双重属性、人己联通对自身价值澄明的秉性。当前,城乡社会发展的二元化分、社会局内外主体的利益博弈、多元价值的冲突等使得乡村教师对其职业角色的认同陷入现代性的困境,具体表现为职业角色人本空心化、职业角色边界泛化、职业价值迷失。突破这些困境,需要从合乎乡土规律的人地互动出发,在递进实现人地厘合、人际协和、人己澄明的基础之上,实现乡村教师职业角色的重新回归。

宽体飞机地面主轮协同转弯控制律设计

主轮协同转弯技术能有效提高飞机的地面机动性,降低主起落架在转弯过程中受到的附加侧向扭矩,减小重载飞机地面转弯半径,但目前实现此技术的前主轮转角控制律设计方法尚不明确。提出以主起落架受力为约束条件,计算不同滑行速度下的前主轮转角关系,在全速度范围内进行分段选择并离散化,据此设计前主轮协同转弯控制律,以原理样机为对象进行仿真分析,验证了该控制律能有效降低两侧主起落架扭矩和的峰值。提出的设计方法对多轮系地面运载装备的复合转弯控制律设计具有一定的理论指导意义。

城市存量用地再开发中的供需关系转型与广州实践

为深入探讨城市存量用地再开发的供需逻辑与实现机制,指出当前我国城市存量用地再开发实践中的需求方是渴望持续升值的市场资本,而供给方则是同时受到“现状、规划、适用政策”制约的存量地块。在此基础上,以广州为例开展实证研究,进一步剖析受政策制度演进影响的供需关系曲线对存量用地再开发规模解释的内在规律,并基于供需关系视角,重新审视我国的城市更新问题,针对存量转型的发展前景与空间生产特征提出若干思考。

基于GBDT的望奎县农田土壤有机碳主控因子研究

利用多源公开数据,针对于2012年搜集到的农田土壤有机碳(SOC)数据,通过梯度增强决策树(GBDT)探究SOC的主控因子,揭示SOC空间分异机理.选择国家商品粮食生产基地县和全国产量大县-望奎县作为研究区域,结果表明,GBDT模型相较于一元线性回归模型在所有的自变量上均具有更好的预测效果,总体的R^(2)为0.958,表明该模型能够很好地解释目标变量的变异;碱解氮、有效磷、气温、土壤微生物多样性、速效钾、土壤pH和降水量依次是影响有机碳含量最为显著的几个因素,其中碱解氮以33.85%的影响权重位居最高;7个环境协变量均观察到对SOC的阈值效应,且均具有两个阈值.研究发现任意两个变量都不是独立的,均存在相互作用的负值效应.表明环境变量对SOC含量的影响是一个复杂的交互作用,而不是简单的叠加.侧面证明了过度施肥并不会达到增加土壤肥力的作用,而会造成资源浪费和农田生态污染问题.

珠三角城市群人口-产业-环境耦合协调度及其影响因素

利用人口、产业和环境三大维度相关的多源大数据,构建耦合协调度测度模型。以珠三角城市群为例,测定人口-产业-环境维度的耦合协调度,并结合相关分析与地理加权回归模型分析其影响因素。结果表明:珠三角城市群人口-产业-环境协调度普遍较低,呈现明显的高值与低值聚集的空间分布格局。城市群内各地级市与不同城乡地域类型的耦合协调度整体差异不大。耦合协调度主要受产业维度产业链串联共生度与环境维度植被净初级生产力的影响。人口与产业维度因子间相关性强且呈正相关,但二者与环境维度因子呈负相关关系。结合研究结果,提出夯实南沙与珠三角西岸地区以创新引领的高质量发展、加强珠三角城市群生态保护的可持续经济发展等建议。