城市长租公寓的空间布局与影响机制实证研究——以深圳为例

长租公寓作为住房市场的新兴业态，是贯彻国家“租购并举”住房政策的重要保障。本文以深圳为例，基于迈点研究院的数据，通过GIS空间分析工具，探讨长租公寓的空间布局及影响机制。研究表明：(1)深圳长租公寓空间布局呈现空间集聚性、距离衰减性、类型分异性特征，具体表现为紧邻中心城区的空间集聚性，从中心城区边缘向外围递减的距离衰减性，酒店、公寓、房地产系长租公寓热点区呈中心城区向外扩展态势的类型分异性；(2)地铁、超市商城、常住人口是影响长租公寓空间布局的主要因素，其影响作用存在空间异质性；(3)运用地租和新消费者理论，从供求视角构建长租公寓空间布局的影响机制。本研究可丰富新兴住房业态空间集聚模式和中国住房研究。     

Cellular Automata for Studying Historical Spatial Process of Traditional Settlements Based on Gaussian Mixture Model: A Case Study of Qiaoxiang Village in Southern China

ABSTRACT

The spatial evolution of traditional rural settlements is a natural process that occurs without professional development planning. With rural spatial organization now being stimulated by China’s economic structure adjustment, making top-down plans match bottom-up spatial principles is important for the continuity of rural communities. In this research, a Cellular automaton based model was introduced to describe the historical spatial rules of rural settlements based on a traditional village in Southern China. In order to reproduce the rural spatial characteristics and laws that were close to the actual situation truthfully and distinctly, in this model, we refined the growth process into three cyclical steps, and used a Multivariate Gaussian Mixture Model for the evaluation of spatial transition potential. Through historical simulation, evaluation of the current status, and future spatial predictions, results showed that: (1) the growth during the whole spatial process maintained logical consistency for optimal selection; (2) certain houses in the southeast region should be carefully protected as a core living culture exhibit, while the best utilization of other homes should be considered; and (3) the most probable region of growth for tourist services or new housing estates is scattered along the river in the central area of the village.     

海洋条件下的水下文物埋藏环境概述

出水文物原本埋藏于水下环境,多种破坏因素协同作用,导致病害严重。在对其进行保护修复处理前,需要全面了解文物埋藏历程及病害机理。文物的腐蚀破坏是其与周围环境相互作用的结果。本研究从海水、海洋生物和底质等三大方面探究海洋条件下的水下埋藏环境,并就中国水下考古常见的出水文物类型如陶瓷器、石质、金属质及木质文物的病害类型及原因作简要阐述。