Spatial Distribution of Soil Salinization Based on GIS in Tianjin Binhai New Area

The distribution of soil salinization was investigated based on GIS and field sampling in Tianjin Binhai New Area. The results showed that the average soil total salt content was 0.818%, with an average pH of 8.43, and the average CI and Na＋ contents were 0.27% and 0.22%, respectively. Presenting zonal distribution feature, the soil total salt content increased gradually from west to east of Binhai New Area. Statistics on the distribution areas of different salinization degrees showed that the area of non-salinzed soils only accounted for 3.18% of the total area; with an area of 107.43 km2, mild saline soil accounted for 6.34% of the total area; the area of moderate saline soil was 173.51 km2, accounting for 10.24%; and the area of sal- inzed soils was 217.36 km2, accounting for 12.82% of the total soil area. The area of saline soils （total salt content 〉0.6%） was 1 142.8 km2, accounting 67.42% of the total land area in Binhai New Area. And the areas for the soils with total salt content of 0.6%-1.0%, 1.0%-1.5%, 〉1.5% were respectively 388.47, 411.82, 342.51 km2, accounting for 22.92%, 24.3%, 20.21% of the total area.

Analysis on the land use and cover change in Tianjin Binhai New Area based on the remote sensing

This paper carries out quantitative analysis on the land use/cover （LU/C） change of 13anjin Binhai New Area in recent 10 years through using land use transition matrix from the three-stage LU/C classification maps of 2000, 2005 and 2010 drafted by means of the National Land Classification System of China based on Landsat TM satellite remote sensing image and the Tianjin Binhai New Area 1：50 000 relief maps. On this basis, the impact of such driving factors as the economy and population on LU/C is further analyzed. The results show that the area of the building land in Binhai New Area has increased significantly over the ten years, and the greenland, wetland, and shoals of high ecological value have been dramatically transformed into the building land and unused land for the development and construction, and the change is more significant in the later five years.

System Development for Storm Surge Hazard Assessment Based on WebG IS for Tianjin Binhai New Area

It is imperative to develop a risk assessment system for quickly predicting storm surge disaster due to the vulnerability of Tianjin Binhai New Area. The flood routing model with user-defined breaches was firstly estab- lished based on the seed spread algorithm in order to achieve a rapid forecasting of storm surge flood information. Furthermore, fuzzy mathematics was utilized to identify the storm disaster grade, and the hazard mapping was con- ducted to visually obtain the hazard spatial and temporal distribution. Finally, the flood routing visuaUzation method was proposed based on numerical simulation of storm surge to achieve the reappearance scene of dynamic evolution process. The developed system can play a vital role in the management and decision-making of sea dyke mitigation engineering in Tianjin Binhai New Area.

Quantitative Evaluation on Urban Ecosystem Carrying Capacity in Tianjin Binhai New Area

Based on the concept of ecosystem carrying capacity,the indicator system of quantitative assessment was set up,which consisted of support indicator system and pressure indicator system.And the factor analysis method was used to screen the indicator system.Different from the traditional indicator weight determination based on the absolute values of the coefficients of regression equation,the squares of factor loadings in the rotated component matrix were attempted to determine the weights of 40 assessment indicators.The result shows that ecological support system and pressure system in Binhai New Area are relatively balanced among six years,and the developing level of urban ecosystem is basically healthy on the whole.However,due to continuously increasing pressure of the resources consumption caused by the rapid growth of the second industry,which is the Leading Industry of Binhai New Area,the ecosystem carrying capacity reached the minimum in 2005.

Path Choice on Rural Industrial Upgrading in the Process of Rural-urban Integration in Binhai New Area

With methods of reference research and field research, the current situations of rural industrialization in the process of rural-urban integration in Binhai new area are analyzed and some problems in the process of integration in the new area are pointed out, such as difficulties in breaking dual economic structure in urban and rural areas, imbalanced economic development in the area and inadequate development of the third industry. And relevant countermeasures are proposed: optimizing agriculture industrial structure and promoting agricultural industrialization to form urban agricultural model of Binhai new area focusing on facility agriculture, park agriculture and high-end agriculture and to realize the intensive growth of agriculture; rationally distributing rural industrial structure to form regional leading industry and playing the guiding role of industry to achieve industrial adjustment improvement; quickening the construction of the third industry centering on service to form the service system of modern countryside and the leading role of modern service industry so as to achieve rapid development of the third industry.

Preliminary Analysis of Sea Use Planning Strategies in Coastal Cities:A Case Study of Binhai New Area in Tianjin City

Through investigating current sea use in coastal cities of China,and exploring foreign and domestic researches on sea use,this paper took Binhai New Area of Tianjin City for example to analyze major problems of its sea use in ecological security,planar form,land use layout,specialized planning,management and regulatory mechanism,then proposed strategies from 4 perspectives,namely ecological conservation and restoration,optimization of planning planar form,optimization of planning land use layout,and planning management,in order to provide references and instructions for the sea use planning of Chinese coastal cities.

On financing restriction and improvement countermeasure in Tianjin Binhai New Area

Ever since involvement of the Binhai New Area into the national development strategy, carrying out highly effective financing promptly will play the pivotal role to implement its economic development strategy smoothly. In this paper, based on nature of regional financing, the descriptive analysis for the financing condition of the Binhai New Area is carried on. And also based on financing restraint theory and the neoclassic investment model, a real diagnosis analysis for the financing constraint condition of the Binhai New Area is studied. Finally, the existed questions in it are pointed out, and propose the correlative improvement countermeasure is put forward.

Characterization of polycyclic aromatic hydrocarbons in PM2.s and PMlo in Tanggu District, Tianjin Binhai New Area, China

Particulate matter （PMlo and PM2.5） concentrations were monitored during the November 2008 by using the filter samples collected day and night from three sites in Tanggu District at Tianjin Binhai New Area, China. The mean concentrations of PM2.5 and PMlo rank in the order of urban （150 ug/m3 for PM2.5 and 197 ug/m3 for PM10） 〉 industrial （32 ug/m3 for PM2.5 and 170 ug/m3 for PM10） 〉 suburb area （27 ug/m3 for PM2.5 and 59 ug/m3 for PM10）. Sixteen polycyclic aromatic hydrocarbons （PAHs） were analyzed in PMlo and PM2.5 samples. Concentrations of total PAHs in PM2.5 and PMlo are in the range of 8.47- 113.94ng/m3 with average of 62.88ng/m3 and 21.07- 118.23 ng/m3 with average of 73.42 ng/m3, respectively. The light ring PAils （2-4 rings） are dominant in both PM2.5 and PMlo during sampling time compares with the heavy ring （5-6 rings） PAHs. The relationship of PAHs and PM2.5 （r = 0.689, p 〈 0.05） is stronger than PAHs and PMlo （r = 0.570, p 〈 0.05）, illustrating PAHs tend to adsorb in PM2.5. In addition, principal component analysis was applied to find the source of PAHs. Three principal factors representing three types of PAHs sources in Tanggu District are extracted, which were coke production, pyrogenic sources and vehicular source.

天津滨海地热田北部深部地热资源赋存规律

【研究目的】天津地热资源丰富,目前已开发的深部地热资源大部分位于“隆中凸”构造区域,而位于“坳中凸”构造区域的地热资源勘查和研究程度基本尚属空白,揭示其深部地热赋存规律可为滨海新区及京津冀地区寻找深部地热资源及勘探与开发提供重要参考。【研究方法】本文以黄骅坳陷宁河凸起中的桥沽地区为研究区,以近期新发现的资源禀赋最好的蓟县系雾迷山组热储层为研究对象,通过分析区域地质资料、大地电磁测深(MT)、钻孔测温和物探测井等资料,系统总结了研究区地质构造、地温场和深部地热资源赋存特征。【研究结果】雾迷山组储层的热储温度高(90~120℃),出水量大于100 m^(3)/h,埋藏相对较浅(2200~2800 m)。区内地质构造条件复杂,断裂构造发育,汉沽断裂为研究区重要的导热、导水通道;地温场呈现“两高夹一低”展布特征与两处背斜构造空间位置相对应;热源以壳源热为主、幔源热次之,大气降水为主要热水来源,热传输机制以热传导型为主。【结论】综合研究区深部地热赋存规律,建立了深部地热资源概念模型,明确了“坳中凸”深部地热找矿新思路。

天津市滨海新区白水头堤段海堤堤型比选设计

天津市滨海新区位于渤海湾西岸,海岸线北起津冀交界涧河口,南至沧浪渠入海口。由于沿海区域地势平坦,历史上曾多次受到风暴潮侵袭,造成不同程度经济损失。现状海堤防潮设计标准为20~50 a一遇潮位组合7级风,经过多年运行大多数堤段发生不同程度沉降,不满足原防潮设计标准,距规划防潮标准100~200 a一遇潮位组合50~100 a风浪差距较大,海堤提标建设工作亟待开展。主要阐述滨海新区白水头堤段不同型式的海堤在工程中的比选及设计应用。

公共图书馆新型阅读空间建设实践与策略——以天津市滨海新区图书馆为例

文章阐述新型阅读空间的特征和建设意义,总结分析我国新型阅读空间的建设概况和主要类型,并以天津市滨海新区图书馆为例,提出公共图书馆新型阅读空间建设策略,即颜值与内涵兼修,打造全民阅读沉浸体验新场景;发挥特色馆中馆优势,拓展特色新型阅读空间;延伸服务触角,布局馆外新型阅读空间。

基于层次分析法的天津滨海新区生态风险评估研究

为明确经济高速发展过程中区域生态风险变化以及风险防控方向,以天津市滨海新区为研究对象,结合滨海新区实际,运用层次分析法从自然环境、经济环境、社会环境3个方面选取了23项指标构建区域生态风险评估指标体系和生态风险评估模型,并对研究区2004~2018年生态风险水平进行评估。结果表明:2004~2013年滨海新区生态风险呈现增加趋势,2013年以后整体维持在较高风险等级(Ⅳ级),主要受自然环境和社会环境因素影响,建议在地面硬化率、人口自然增长率、人均年用水量比例等权重占比较大的因素方面采取相应措施来降低生态风险。

公共文化服务均等化推进路径——以天津市滨海新区图书馆为例

文章阐释公共文化服务均等化的内涵和意义,以天津市滨海新区图书馆为例,探讨区属公共图书馆推进公共文化服务均等化的路径,即健全图书馆总分馆制,做好免费开放服务工作,依托“汽车图书馆”打通阅读服务“最后一公里”,开展社会化合作,推进智慧图书馆建设,依托现代物流技术提升文献传递效率。

多网融合理念下城市存量地区慢行和绿道系统更新优化策略——以天津市滨海新区核心区为例

在绿色转型发展提速的时代,文章通过梳理国内外城市慢行与绿道系统的发展现状,借鉴巴塞罗那、波特兰、新加坡市等城市的建设经验,总结出多网融合理念和规划持续动态更新的国际趋势;结合天津市滨海新区核心区存量空间发展现状,应用ArcGIS空间分析、空间句法和实地观察等多种方法,评估了慢行和绿道系统覆盖度、连通度和功能性等方面的现状问题;基于多网融合理念,以多体系融合、联系生活圈、提升连接度、优化服务性为目标,提出了提高绿色慢行网络密度,提升服务设施通达性,改造交通立体系统,建立专项设计导则等适用于存量地区的更新优化策略,为高质量绿色发展提供参考借鉴。

滨海新城与福州新区联动发展的系统动力学建模与仿真

针对滨海新城在福州新区规划中的重要地位,文章明确滨海新城与福州新区联动发展的特征,建立滨海新城与福州新区联动发展的系统动力学模型,并借助Vensim软件进行模型检验,选择信息港科技研发系数、投资贡献度、GDP增加系数等作为控制变量进行仿真,结果显示:为了推动滨海新城与福州新区的联动发展,需要加大滨海新城科技研发的投入,重点发展大数据相关产业,同时稳步推进海港、空港、陆港的投资,提升海港、空港、陆港吞吐能力。

基于时序InSAR技术的滨海新区地面沉降监测

针对传统地面沉降测量方法在大范围测区内费时长、时效性差等缺点,本文利用2017—2021年覆盖天津市滨海新区Sentinel-1A影像数据,采用永久散射体合成孔径雷达干涉测量(PS-InSAR)和短基线集合成孔径雷达干涉测量(SBAS-InSAR)技术获取地面沉降数据,通过地表形变信息的时空分析确定各类因素对地面沉降的影响并交叉验证结果的可靠性。分析结果表明,天津市滨海新区的地面沉降受到降水、第四系地层厚度、地下水等因素影响。其中,天津市滨海新区在2017—2021年存在地面沉降现象,最大沉降速率为-130 mm/a,最大抬升速率为40 mm/a,最大累计沉降量为-411 mm。重点沉降区域主要分布在东北部的杨家泊镇与寨上街道交界地区以及西南部的中塘镇和北大港水库附近。

基于非直线系数阻抗模型的公交车可达性研究

以天津滨海新区为研究对象,基于最小阻抗可达性评价方法,分别对比3种成本指标的可达性评价结果,揭示出传统以空间实际距离为成本可达性测度方法的不足,提出以非直线系数为成本的可达性评价方法。结果表明:天津滨海新区公共交通可达性优劣程度并没有表现出由中心向外围依次减弱的空间分布模式。中心城区各个交通小区内部,对公交的需求较大,为了增加公交的服务面积,公交线路过于曲折,间接降低了公交的可达性。周边小区之间由于缺乏直达公交线路,可达性较差。全区公共交通存在诸多问题。根据评价结果,对公共交通存在等问题提出整改建议,为合理的规划公交线路提供依据,对于提高滨海新区公交运行效率具有重要意义。

旋喷桩在顶管工程软弱土体加固中的应用

天津市南水北调中线滨海新区供水一期工程是天津市内输配水工程的重要组成部分,建设任务是向天津市滨海新区输送引江原水,输水管材采用2根直径2 600 mmPCCP管道,局部辅以钢管。输水管道所经紫阳道泥浆池占地面积大,泥浆较深,成为管道施工难点。根据现场地形、地质条件,经比较分析,采用顶管穿越方案,其中泥浆加固是方案的重难点。加固方案的选择不仅要安全可靠,还要经济,便于实施。经分析论证,采用旋喷桩加固方案,并确定加固范围、桩径、桩长、水泥掺量等重要参数。

滨海新区地表水水质评价与污染源分析

滨海新区在大力发展工业的同时,面临水资源紧缺与水环境恶化等问题,基于2020年至2021年滨海新区内15个监测站位的丰水期、枯水期实测数据,通过改进型加拿大水质指数模型对滨海新区地表水进行水质评价,在水质评价的基础上,利用相关性分析与绝对主成分-多元线性回归模型分析影响地表水水质状况的污染源。15个水质监测站位水质评价结果表明:丰水期水质指数为32.27~82.80,良好水质站位1个,中等水质站位6个,较差水质站位7个,差等水质站位1个;枯水期水质指数为47.28~81.36,良好水质站位1个,中等水质站位12个,较差水质站位2个。污染源分析结果表明:丰水期中,污染源为生活污水、农业面源污染、养殖尾水点源污染;枯水期中,主要污染源为工业废水、生活污水、养殖尾水面源污染。

天津滨海新区地面沉降多维立体监测分析方法研究

针对目前地面沉降监测中单一监测结果造成沉降区域划分和土层变形情况掌握不精确的问题,提出了采用多维立体监测分析的方法,同步分析区域内水位监测井的水位数据、水准监测点的沉降数据及InSAR雷达监测的沉降数据,并对重点研究区域采用一孔多标的监测方法分析土层的变形特征。实现了从定性分析区域沉降特征到定量分析土层变形特征的转变,为滨海新区的地面沉降防治走向精细化管理提供了一种研究思路。