Scale-free Structure of Town Road Network in Southern Jiangsu Province of China

From the viewpoint of Graph Theory this paper builds a town road network graph of regional scale, and proposes numerical vertex degree (Di), rank vertex degree (Dr) and population size vertex degree (Dp) on the base of vertex degree (D). Then the indicators of Di, Dr, Dp and mathematical statistics methods are applied to investigating scale-free structure of town road networks in the southern Jiangsu Province. The results show that the distribution of Di does not exhibit scale-free properties, but Dr and Dp do. Additionally the correlation coefficient between Dp and Di is only 0.569, but the spatial correlation between Dp and Dr is very evident on the base of correlation analysis and spatial analysis of GIS. The mutual mechanism between Dp and Dr spatially represents a "Core-Belt" model of town development of regional scale. The town development model is open and clustered, and beneficial to both economic development and ecological protection. And then we suggest that Suzhou City, Wuxi City, Changzhou City and Wujin City control towns' high-density pattern by conducting centralization and consolidation policies, and properly controlling and planning higher rank roads; whereas Nanjing City, Zhenjiang City, Jintan City and Liyang City must strengthen the development of towns along higher rank roads.

ENVIRONMENTAL FEATURES AND WATERENVIRONMENTAL PROBLEMS IN THE CONTIGUOUSREGION OF JIANGSU,SHANGDONG,HENANAND ANHUI PROVINCES

Owing to intensive human activities and the floods of the Huaihe River in historic peiod, the contiguous region of Jiangsu, Shandong, Henan and Anhui provinces is suffering from a variety of environmental problems and naturaldisasters, of which water pollution and drought-flood disasters are most observable. Considering the special location andenvironmental status of the contiguous region, advices are proposed in the paper: perfecting trans-regional managementssystem of water environment incorporating basin management agencies in local government activities; strengthening cooperation of two agencies: water conservancy agency and environment protection agency; enhancing integrated control ofwater pollution and flood-drought disasters; taking the interests of the whole river into acount and paying attention to bothstorage and drainage; broadening sources of water supply and inceasing water delivery; controlling pollutant discharge,developing water saving production system.

An Empirical Study on the Development of Regional Circular Economy Based on Ecological Efficiency： A Case Study of Jiangsu Province

Based on the theory of ecological efficiency,an empirical study on ecological efficiency and its changing path in Jiangsu Province during2005-2014 was conducted,and then the relationship between economic development and environmental pressure in the province was discussed by decoupling analysis. Finally,the main influencing factors of changes in ecological efficiency were analyzed by grey relational analysis method. The results showed that from 2005 to 2014,the resource efficiency of each indicator in Jiangsu Province fluctuated,while the environmental efficiency of most indicators increased slightly. The comprehensive resource efficiency and environmental efficiency also fluctuated,and the fluctuation range of the comprehensive environmental efficiency was larger than that of the comprehensive resource efficiency. Seen from the temporal evolution of ecological efficiency and circulation economy development pattern in Jiangsu Province,the leaping development mode was adopted in the province.The decoupling state of economic development and environmental pressure in Jiangsu Province was unstable,and they were in a state of strong decoupling,weak decoupling and expensive recoupling in most years. According to the results of grey relational analysis,comprehensive utilization of solid waste,industrial electricity consumption,electricity consumption of the whole society,domestic energy consumption,discharge of urban domestic sewage,and production of common industrial solid waste were the main influencing factors of changes in ecological efficiency in Jiangsu Province.

Distribution characteristics of historical earthquake classes in Jiangsu Province and South Huanghai Sea region

According to the analysis on the characteristics of historic earthquakes in Jiangsu Province and South Huanghai Sea region, the historical earthquakes in the studied area are divided into two kinds of comparatively safe class and comparatively dangerous class. Then the statistical result of earthquake class, the characteristics of geo-graphical distribution and geological structures are studied. The study shows: a) In Jiangsu Province and South Huanghai Sea region, the majority of historical strong earthquakes belong to comparatively safe class, only 13.8% belong to comparatively dangerous class; b) Most historical earthquakes belong to comparatively safe class in the land area of Jiangsu, eastern sea area of Yangtze River mouth and northern depression of South Huanghai Sea region. However, along the coast of middle Jiangsu Province and in the sea area of South Huanghai Sea, the distribution of historical earthquake classes is complex and the earthquake series of comparatively dan-gerous class and comparatively safe class are equivalent in number; c) In the studied area, the statistical results of historical earthquake classes and the characteristics of spatial distribution accord very well with the real case of present-day earthquake series. It shows that the seismic activity in the region has the characteristic of succession, and the result from this study can be used as a reference for early postseismic judgment in the earthquake emer-gency work in Jiangsu Province.

Assessment of Waterlogging Risk in Lixiahe Region of Jiangsu Province Based on AVHRR and MODIS Image

Four images of 1991 AVHRR, 2003 and 2007 MODIS were used to extract waterlogging inundated water of three years, and three inundated water maps were overlaid to estimate waterlogging affected frequency. Based on wa-terlogging affected frequency, waterlogging hazard of pixel scale was assessed. According to the weighed score of area percentage of different waterlogging affected frequency in 13 counties/cities of Lixiahe region, waterlogging hazard rank of every county/city was assessed. Waterlogging affected frequency map and 1km×1km grid landuse map were used to assess waterlogging risk of pixel scale; and then waterlogging risk rank of every county/city was assessed by the similar method by which waterlogging hazard rank of every county/city was assessed. High risk region is located mainly in core zone of Lixiahe hinterland, medium risk region is adjacent to high risk region, and low risk region is located in the most outlying area of risk zone and mainly in south to middle part of Lixiahe region. Xinghua and Gaoyou belong to high risk city, Jiangyan belongs to medium risk city, and the other counties/cities have low or lower waterlogging risk. The method of assessing waterlogging risk in this paper is simple and applicable. This paper can provide guidance for the waterlogging risk analysis in broader area of Huaihe River Basin.

Distribution characteristics of historical earthquake classes in Jiangsu Province and South Huanghai Sea region

According to the analysis on the characteristics of historic earthquakes in Jiangsu Province and South Huanghai Sea region, the historical earthquakes in the studied area are divided into two kinds of comparatively safe class and comparatively dangerous class. Then the statistical result of earthquake class, the characteristics of geo-graphical distribution and geological structures are studied. The study shows: a) In Jiangsu Province and South Huanghai Sea region, the majority of historical strong earthquakes belong to comparatively safe class, only 13.8% belong to comparatively dangerous class; b) Most historical earthquakes belong to comparatively safe class in the land area of Jiangsu, eastern sea area of Yangtze River mouth and northern depression of South Huanghai Sea region. However, along the coast of middle Jiangsu Province and in the sea area of South Huanghai Sea, the distribution of historical earthquake classes is complex and the earthquake series of comparatively dan-gerous class and comparatively safe class are equivalent in number; c) In the studied area, the statistical results of historical earthquake classes and the characteristics of spatial distribution accord very well with the real case of present-day earthquake series. It shows that the seismic activity in the region has the characteristic of succession, and the result from this study can be used as a reference for early postseismic judgment in the earthquake emer-gency work in Jiangsu Province.

SPATIAL-TEMPORAL DYNAMICS OF REGIONAL CONVERGENCE AT COUNTY LEVEL IN JIANGSU

The dynamics of regional convergence include spatial and temporal dimensions. Spatial Markov chain can be used to explore how regions evolve by considering both individual regions and their geographic neighbors. Based on per capita GDP data set of 77 counties from 1978 to 2000, this paper attempts to investigate the spatial-temporal dynamics of regional convergence in Jiangsu. First, traditional Markov matrix for five per capita GDP classes is constructed for later comparison. Moreover, each region’s spatial lag is derived by averaging all its neighbors’ per capita GDP data. Conditioning on per capita GDP class of its spatial lag at the beginning of each year, spatial Markov transition probabilities of each region are calculated accordingly. Quantitatively, for a poor region, the probability of moving upward is 3.3% if it is surrounded by its poor neighbors, and even increases to 18.4% if it is surrounded by its rich neighbors, but it goes down to 6.2% on average if ignoring regional context. For a rich region, the probability of moving down ward is 1.2% if it is surrounded by its rich neighbors, but increases to 3.0% if it is surrounded by its poor neighbors, and averages 1.5% irrespective of regional context. Spatial analysis of regional GDP class transitions indicates those 10 upward moves of both regions and their neighbors are unexceptionally located in the southern Jiangsu, while downward moves of regions or their neighbors are almost in the northern Jiangsu. These empirical results provide a spatial explanation to the "convergence clubs" detected by traditional Markov chain.

The Influence of Climate Variability on Holoplanktonic Polychaetes Populations of Ocean Sector of the Colombian Pacific Basin

Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the present work described for the first time the influence of the climatic variability 2004-2012 on the holoplanktonic polychaetes populations, as well as their relationship to environmental variables. Species of the Alciopidae, Lopadorrhynchidae and Iospilidae families were identified from 85 samples collected in the Pacific Basin of Colombia, contrasting them with the presence of ENSO, and correlating them with the environmental variables of temperature, salinity and chlorophyll-α concentration. Of the 14 species identified, only Lopadorrhynchus cf. henseni and L. cf. brevis increased their densities under El Niño and correlated positively with temperature. Rhynchonereella cf. petersii correlated negatively with temperature;while R. cf. gracilis and Pelagobia cf. longicirrata were positively correlated with chlorophyll-α concentration and salinity, respectively. Additionally, with the first description of the environmental ranges of the 14 species identified for the Colombian Pacific basin, it was found that the most commons species presented broader environmental ranges. The results from the current research are consistent with previous studies in other regions of the Pacific and latitudes. The responses of the organisms suggest trophic and mobility trends that were not known for tropical holoplanktonic polychaete species.

2022-2023年江苏省豇豆区域筛选试验(盐城点)

为筛选适宜江苏省种植的高产、优质的豇豆新品种,2022-2023年承担了江苏省豇豆区域试验。盐城点两年的试验结果表明,13个参试品种中,苏豇17-35总产量最高,比对照增产29.29%,其次是帮达夏龙,比对照增产27.80%,第3名是盐豇5号,比对照增产26.19%。对照苏豇3号产量最低,其他12个参试品种都比对照有不同幅度的增产,综合性状优良,建议继续进行生产试验,进一步鉴定品种的丰产性和稳定性。

Constraint regionalization of water environment and the guidance for industrial layout： A case study of Jiangsu Province

Along with the highly speedy development of economy and society in the developed area in China,with the sharp increase in the quantity of pollutant discharge such as agricultural fertilizers,industrial wastewater and domestic sewage,the water environment has been deteriorated continuously and then become a restricting factor to regional development.For harmonizing the relationship between economic development and water environment,many countries have been attempting water environmental function zoning so as to provide a scientific basis for the basin management.However,focusing mainly on water body,these researches ignored the spatial relation between water and land as well as the restricted function of water environment on regional industrial layout.So previous index system adapted only to the environmental genes but excluded the stress genes of socio-economic development.This paper,thus,taking both the sensitivity and pressure of water environment into consideration,discusses the methods of constraint regionalization of water environment,including how to divide the assessed units,choose and manage the assessed elements.Then,as a case study,Jiangsu Province is divided into four types of areas by the method of quadrant analysis,i.e.,high-pressure and high-sensitivity area （HP-HS Area）,high-pressure and low-sensitivity area （HP-LS Area）,low-pressure and high-sensitivity area （LP-HS Area） and low-pressure and low-sensitivity area （LP-LS Area）.Finally,this paper presents the schemes of industrial layout and the policy of industrial development direction respectively,which are very important bases for harmonizing the industrial development and the bearing capacity of water environment.

江苏省里下河地区洪涝灾害与综合应对策略

防洪除涝保安是保障地区经济社会稳定发展的重要前提。近年来持续变化的自然和人文条件给防洪减灾带来了一系列重大挑战,总结归纳了江苏省里下河地区洪涝治理特点及历程,在解析自然和人文因素对流域洪涝灾害主要影响基础上,从加快完善防洪除涝工程体系、升级防汛预警调度决策指挥系统、强化防洪抢险和应急救援能力、科学规范和管控人类活动4个方面探讨变化环境下强化流域防洪除涝能力与韧性的对策,为江淮平原河网完善防洪治涝体系提供了参考。

Exploration and Innovation of Regional Urban System Planning: A Review and Analysis on the Urban System Plan of Jiangsu Province

Through the analysis on the main problems existing in the urban development of Jiangsu Province, this paper points out the limitations of traditional urban system planning. It also introduces the exploration and innovation in the compilation of the Urban System Plan of Jiangsu Province, and puts forward the specific countermeasures.

江苏地域文化下的农业区域公用品牌设计研究

目的研究江苏地域文化下区域公用品牌设计建设路径。方法以江苏地域文化内涵为价值基础,针对江苏地域文化特点、地域文化在品牌设计中的作用、江苏区域公用品牌发展现状等层面进行分析,融合优质品牌设计案例解析,提取可视觉化江苏地域文化元素,对农业区域公用品牌设计路径展开研讨。结果融合江苏地域文化特质,构建“体系标准+地域差异+优势突显+营销聚合”理论型设计路径,打造前瞻型、通用型的农业区域公用品牌设计指南。结论地域文化背景带动下的区域公用品牌形象进一步实现了产品与消费者之间的可持续互动,带领消费者感受农产品从田间到手中的整个过程,促使更多具有地域代表性的区域公用品牌的涌现,以点带面地辐射并带动区域文化产业的提档升级,助力乡村振兴。

耦合生态系统服务供需的生态安全格局构建——以苏南地区为例

生态系统服务供需平衡是保障生态安全的基础,将生态系统服务供需作用流动机制融入生态安全格局构建对保障区域生态安全和提升人类生态福祉具有重要意义。基于景观生态学原理,提出耦合生态系统服务供需的生态安全格局构建逻辑方法,以苏南地区为研究区构建了景观生态安全格局和社会生态安全格局。研究结果表明:(1)耦合生态系统服务供需的生态安全格局应以维系区域生态安全和保障区域人类生态福祉为构建目标。其中,生态安全以生态系统服务与生态风险为核心关注对象,人类生态福祉的实现依赖于人类主动获取与生态系统服务流;(2)苏南地区生态系统服务供需间存在错配格局,在此基础上分别识别生态源地与需求源地4247.46km^(2)、1882.16km^(2),生态廊道与供需廊道1614.02km、1915.82km,生态夹点29处、生态障碍点23处、生态供需节点20处;(3)形成“三区四带两组团”的社会-景观生态安全格局优化布局方案,并在此基础上提出针对性保护修复策略,推动经济-生态空间协同发展。研究可为丰富区域生态安全格局构建理论和方法、推动国土空间优化与管控提供参考借鉴。

数字经济背景下江苏新零售模式创新研究

随着数字经济的快速发展,数字化的高质量转型已成为各个领域的重要挑战。在数字经济背景下,传统零售行业诞生出新模式——“新零售”,在数字技术的发展与带动下,零售行业各个环节都面临着重塑的局面。江苏作为经济大省,其新零售行业也在快速发展,并不断寻找新的发展机遇以应对各种新型商业模式的挑战。本文通过对江苏新零售发展现状及所面临问题的全面分析,从数字经济的角度系统探讨了新零售模式创新的理论框架和实施路径。研究表明,数字经济的引入有助于优化决策机制,推动新零售企业以数据驱动决策,进而提升新零售模式的创新能力和市场竞争力。本文提出了建立以数据为基础的决策机制、引入先进的算法和技术、加强线上线下融合、提升消费者体验等策略建议,旨在为江苏省新零售行业的创新发展提供具有参考价值的策略方案。

南方山区耕地林果化时空演变及影响机理

为厘清南方山区耕地林果化时空演变趋势,探究耕地林果化的驱动机理,该研究以福建省为研究对象,截选2000—2020年5个时间节点,利用地形梯度分级、空间自相关分析等方法分析耕地“林果化”的时空演变特征,并借助最优参数地理探测器模型揭示其驱动因素。研究表明:1)福建省耕地林果化规模呈现“平稳发展转向骤增”的变化趋势,2015—2020年增加显著。2)水平空间上,林果化程度由“东高西低”向“西高东低”转变,Moran’s I从0.396增加至0.672,林果化行为在空间上呈现明显的集聚特征。3)垂直地带上,耕地林果化呈现明显的地形梯度效应,主要发生在海拔0~1000 m、坡度0°~2°和10°~20°、地形位指数为0.1~0.8的阴坡和半阴坡区域。4)不同时期耕地林果化空间分异的主导因素不同,其中高程、距居民点距离、GDP始终是稳定的驱动因子;各影响因子交互后对林果化的解释程度均呈现增强。耕地林果化演变是自然禀赋、区位条件和经济政策共同作用下的复杂结果,地方政府推行林果化管控过程中应基于耕地本底条件及驱动机理的不同进行分区整治,今后耕地占补平衡有必要推动平原林果地和山坡耕地空间置换。

基于批判性地域主义的豫南传统村落传承模式研究

在全球化背景下,我国城市扩张迅速,城镇化加快了传统村落的消亡。传承传统村落的地域文化,保护传统村落的空间聚落结构及建造经验,是实现传统村落可持续发展和环境生态化的有效途径。文章从自然特质、人文特质和建构特征三个方面对豫南传统村落的地域特征进行解析,基于批判地域主义理论的思想策略,提出了豫南传统村落的多元化传承模式,即恢复性建设模式、主动中心化模式、静态传承模式、动态传承模式、有机更新模式等。研究结果对传统村落的传承和美丽乡村建设具有参考意义。

江苏省工业旅游区集聚特征及多要素空间关联模式研究

在旅游消费升级、城市更新的大背景下,发展工业旅游作为城市拓展旅游消费空间、促进城市转型的重要举措愈发受到关注。研究工业旅游区的空间格局及其与相关旅游要素的空间关联模式,对促进工业旅游高质量发展具有重要意义。以江苏省120家省级工业旅游区为研究对象,运用GIS空间分析技术和理论,刻画江苏省工业旅游区的空间分布格局,并基于POI数据同位模式挖掘和多元变量聚类方法探析江苏省工业旅游区与等级景区、路网交通、购物、餐饮、住宿等旅游服务要素之间的空间关联水平和模式。研究表明:(1)江苏省工业旅游区空间分布整体呈现“南密北疏”的集聚特征,地域差异性较为突出;(2)江苏省各类型工业旅游区的空间分布特征与省内工业发展基础和优势基本吻合,以食品饮料、纺织服装等轻工业为代表的工业旅游景观打造更为成熟,而环保、水利等类型的工业旅游资源目前尚未得到有效开发;(3)江苏省工业旅游区与等级景区、路网交通、购物、餐饮和住宿设施等旅游配套要素空间关联性整体偏弱、而扬子江城市群较强的特征,具体可分为不均衡发展型、均衡发展型、良好发展型、潜力发展型、起步发展型和艰难发展型6种模式。

长期氮添加对苏北杨树人工林碳储量的影响

[目的]量化分析氮添加对南方杨树人工林碳储量分配格局的影响,为进一步提升我国杨树人工林在实现“双碳”战略目标中的作用,进而为我国“双碳”战略新时代背景下杨树人工林生产经营模式优化及技术集成提供理论支撑。[方法]基于东台林场杨树人工林长期氮添加样地,采用随机区组设置5个不同浓度氮处理:N_(0)〔0 g/(m^(2)·a)〕、N_(1)〔5 g/(m^(2)·a)〕、N_(2)〔10 g/(m^(2)·a)〕、N_(3)〔15 g/(m^(2)·a)〕、N_(4)〔30 g/(m^(2)·a)〕,研究长期氮添加对杨树人工林乔木层、土壤层、凋落物层、林下植被层碳储量的影响。[结果](1)与对照相比,杨树人工林乔木层碳储量在N_(3),N_(4)处理下显著增加,在N_(3)处理下最为显著,提高了21.6%;(2)各处理均显著提高了0—15 cm土层的土壤碳储量,但对30—45 cm土层的土壤碳储量没有显著影响;(3)N_(2),N_(3),N_(4)对凋落物层碳储量影响显著,N_(3)对其影响最强,提高了49.7%;各处理均降低了林下植被层碳储量,但差异不显著;(4)相关性分析结果表明:杨树人工林各层碳储量与土壤中TN,MBN,DON,DOC呈正相关,与pH,C/N呈负相关。[结论]在N_(3)处理下,即15 g/(m^(2)·a)对东台杨树人工林碳储量的影响最大,有利于其生态系统碳储量快速且稳定积累。

乡村地域工业用地空间重构研究——以苏南地区为例

国土空间重构能够有效提升自然资源节约集约利用水平,推动经济社会高质量发展。文章在分析苏南地区乡村工业用地的演变特征和乡村工业用地空间重构的必要性与紧迫性基础上,明晰苏南乡村工业用地空间重构存在的困境,理顺其空间重构基本框架与产权融合机制,诠释了产权融合视阈下乡村工业用地空间重构的实施路径。总体看,苏南地区乡村工业发展已进入转型优化期,但产业规模小而散、土地权属杂而混乱、土地产出低而有限。政府投入收益倒挂、土地权属协调困难和破碎土地整合路径不畅等问题仍然存在,严重阻碍了乡村存量工业用地空间重构与价值提升。未来应当引入产权融合治理机制,理顺不同产权结构和主体之间利益博弈,通过归宗整合、用地置换和连片自改等路径实现空间重构,以提升乡村工业空间价值。