Classification and Spatial Pattern of Rural Multifunction from the Diversify of Construction Land Use:Taking Tongshan District of Jiangsu Province as a Case Study

The development of rural area in suburban(RAS)is comprehensively influenced by the mixed processes of non-farming,local urbanization and rural industrialization and has distinctive multifunctional features on the socioeconomic and resource utilization.Multifunctional reconstruction in the RAS is mainly manifested by changes in the quantity and structure of the construction land use(CLU).We took Tongshan District of Jiangsu Province as the study case.Following the logic of identifying,clustering,and diagnosing,we assessed the functional features of CLU and analyzed the differentiation of the scale and structure of CLU in RAS,with the aim of identifying the types and characteristics of multifunctional development in these regions.This study found that:1)typical RAS were experiencing multifunctional space reconstruction,and their multifunctional value was emerging and highlighted.The CLU was rapidly expanding,and the types of CLU were evolving from single to multiple uses;2)based on the dominant function of diverse rural CLU,we classified RAS into five types,dominated by the following functions,respectively:commercial services,industrial production,residential living,basic support and public service;3)according to the dominant function and spatial pattern,the development types of RAS were classified into agricultural service,comprehensive services,and integrated industries service,showing a circular spatial pattern from the suburbs to distant suburbs.The results can provide policy implication by creating new development impetus from rural multifunction perspective to promote the RAS revitalization.

Analyses and Prediction of the Suitable Culture Period of Laver along the Coastal Areas of Jiangsu Province

[ Objective] The study aimed to analyze and predict the suitable period of laver along the coastal areas of Jiangsu Province. [ Method ] TO enhance the ability of meteorology to service laver culture, using the modern weather forecast technology, agricultural weather prediction was de- veloped according to the demands for meteorological conditions during laver production. [ Result] From south to north, there were certain differ- ences in the suitable periods of laver culture, breeding and harvesting, with slight variations. The forecast of the first and last days of certain water temperature could provide scientific references for the meteorological service of laver culture, and the service effect became better after it was modi- fied with the aid of the medium-term and long-term weather prediction. [ Conclusion] The research can offer theoretical bases for the culture of laver along the coastal areas of Jiangsu Province.

Kaolin Deposits of Weathering-Residual in the Coastal Area of Guangdong Province

Kaolin deposits of weathering-residual type make up a large proportion in different types of kaolin depos-its and are widely used in ceramics, electron ceramics, rubber and paper industries. This paper discusses sys-tematically this type of kaolin deposit with respect to their features of occurrence, mineralogical and chemicalcomposition and transformation of minerals during supergene processes, thus providing some basic data forthe rational exploitation and utilization of the kaolin resources.

Spatial Structure of Traditional Villages in Coastal Areas of Jiangsu Province

The village is the product of the objectification of human spirit, bearing the human production, life and other behaviors. Traditional villages in coastal area are the important carrier of sea salt culture, reflect a unique human landscape, form the unique structure characteristics and become China’s rural society’s important component. But in recent years, due to the urban renewal and the accelerating of the socialism new rural construction and the deterioration of the natural environment, traditional villages in Jiangsu coastal areas relying on the natural and cultural environment are experiencing an unprecedented test. In this paper, according to the investigation of the coastal areas of existing traditional village, after the comparative analysis, some basic spatial structure characteristics were summarized. It is expected to provide a reference for the planning, construction and management of villages.

Mesozoic Volcanic-Intrusive Complexes in the Coastal Area of Southeastern Zhejiang Province: Their Features, Petrogenesis and Distribution Pattern

On the basis of previous studies and by means of field geological, remote sensing, petrographical,mineralogical, petrochemical and geochemical investigations, the authors studied the temporal-spatial distribu-tion of the regional structures, volcanic structures and products of volcanic activity in the coastal area ofsoutheastern Zhejiang. On the basis and through a systematic comparison of the products of magmatism in thearea, it is considered that there exists a compsite volcanic structural belt composed of linear and circular struc-tures and it has been demonstrated that there exist volcanic intrusive complexes--'trinity' composed of vol-canic, subvolcanic and plutonic rocks. It is suggested that the volcanic intrusive complexes in the area belong tothe typical syntexis series and that its materials were derived from a mixed source of crust and mantle.

Residues of organochlorine pesticides in intertidal flat surface sediments from coastal zone of Jiangsu Province, China

Sixteen surface sediment samples were collected and analysed to evaluate the residues of organochlorine pesticides （OCPs） from intertidal fiat in Jiangsu Province. Overall, 22 OCPs were detected with total concentrations of OCPs ranging widely from 0.96 to 12.14 ng/g （dry wt）. Total hexachlorocyclohexane （HCH） and total dichlorodiphenyltrichloroethane （DDT） levels varied from 〈0.01 to 0.67 ng/g and from 0.23 to 4.85 ng/g, respectively. DDTs were the predominant compounds. The dominance of β-HCH indicated a history of HCH pollution. According to the ratios of （p,p＇-DDD＋p,p＇-DDE）/p,p＇DDT and o,p＇-DDT/p,p＇- DDT, new input of DDTs did not occur in most sites, and the main sources were historical usage of technical DDTs. OCPs such as dieldrin, endrin, p,p＇-DDD, and p,p＇-DDT exceeded the effects range low, showing adverse biological effects that would occasionally occur at some sites of the study area.

Propagation Mechanisms of Incident Tsunami Wave in Jiangsu Coastal Area,Caused by Eastern Japan Earthquake on March 11,2011

At 13：46 on March 11, 2011（Beijing time）, an earthquake of Mw=9.0 occurred in Japan. By comparing the tsunami data from Guanhekou marine station with other tsunami wave observation gathered from southeast coastal area of China, it was evident that, only in Guanhekou, the position of the maximum wave height appeared in the middle part rather than in the front of the tsunami wave train. A numerical model of tsunami propagation based on 2-D nonlinear shallow water equations was built to study the impact range and main causes of the special tsunami waveform discovered in Jiangsu coastal area. The results showed that nearly three-quarters of the Jiangsu coastal area, mainly comprised the part north of the radial sand ridges, reached its maximum tsunami wave height in the middle part of the wave train. The main cause of the special waveform was the special underwater topography condition of the Yellow Sea and the East China Sea area, which influenced the tsunami propagation and waveform significantly. Although land boundary reflection brought an effect on the position of the maximum wave height to a certain extent, as the limits of the incident waveform and distances between the observation points and shore, it was not the dominant influence factor of the special waveform. Coriolis force＇s impact on the tsunami waves was so weak that it was not the main cause for the special phenomenon in Jiangsu coastal area. The study reminds us that the most destructive wave might not appear in the first one in tsunami wave train.

DYNAMICS OF REGIONAL URBANIZATION IN FUJIAN COASTAL AREA

Since the economic reform in 1978, urban development in China has become much more rapid and the dynamic mechanisms of urbanization more diversified. The 'Bottom Up' strategy becomes as important as, or even more important than, the 'Top Down' strategy as the dynamic mechanisms of regional urbanization. On the basis of major theories of development economics and regional economics, this paper analyzes the major dynamic mechanisms of regional urbanization in coastal area of Fujian Province from 1978 to 1989, and describes quantitatively the territorial differentiation of regional urbanization process under two major dynamic mechanisms using principal componet analysis.

1300—2019年江苏沿海风暴潮灾害时空分布特征

历史上江苏沿海曾频发2类风暴潮灾害,给当地带来了巨大损失。建立该地区长时间尺度的风暴潮灾害序列对了解过去与预测未来意义重大。以历史文献、地方志、海洋灾害公报等记载的风暴潮资料为基础,建立了风暴潮灾害识别体系,重建了1300—2019年江苏沿海风暴潮灾害序列,分析了风暴潮灾害时空变化规律,探究了其与气候异常和黄河、长江入海口变迁之间的关系。结果表明:江苏沿海地区主要受台风风暴潮灾害的影响,1300—2019年间共发生246次风暴潮灾害,平均周期为2.9年,且近100年来发生频率有增大的趋势;小波分析结果显示,风暴潮灾害年际变化存在17年、61年和115年的时间尺度周期,其中115年周期最为明显。海气相互作用影响下,厄尔尼诺活跃年江苏沿海台风风暴潮灾害偏少;气温与台风风暴潮灾害频次有一定的正相关性,但其影响机制尚不明确。盐城、南通和苏州为风暴潮灾害高发地区,常州和无锡发生频率较小。在气候变暖与江苏海岸冲淤变化的作用下,1855年后盐城和南通地区风暴潮灾害发生频率增加,连云港地区明显增加;随着海岸线的变迁与长江河口的演变,镇江、扬州、泰州与苏锡常地区受风暴潮灾害影响减少。

公共体育服务体系示范区建设促进了体育市场主体发展吗?——基于准自然实验的实证研究

基于2015年的江苏省公共体育服务体系示范区建设的准自然实验,选取2013—2020年全国12个省份149个城市的面板数据,采用双重差分方法探讨公共体育服务体系示范区建设对当地体育市场主体的影响。研究发现,一是公共体育服务体系示范区建设促进了体育市场主体发展,该结论通过平行趋势检验和稳健性检验后依然成立;二是公共体育服务体系示范区建设对体育市场主体发展的促进效应具有可持续特征,公共体育服务体系示范区建设时间越长,对体育市场主体的推动效应越大。公共体育服务体系示范区建设不仅可以促使相关企业对投入体育领域产生更高预期,也能借助政策支持循环累积有利于体育市场主体发展的要素。

江苏海岸侵蚀及其防护工程研究进展

在分析江苏淤泥质海岸侵蚀特征的基础上,对江苏海岸防护工程发展历程进行了梳理。随着冲淤转换节点南移,江苏海岸侵蚀岸段范围逐渐扩大,滩面下蚀且海岸盐沼大面积消失;传统的局部海岸防护形式已显被动,迫切需要一种局部与宏观相结合、自然与工程相结合的可持续性侵蚀海岸管理策略。指出应将废黄河三角洲沿岸作为一个整体,建立宏观的“大型丁坝+离岸潜堤”相结合的整体海岸防护体系。在纵向上,构建以人工岬角为节点的岬湾相间海岸;在横向上,通过离岸潜堤消浪促淤来进行盐沼生态系统的修复与重建。

江苏省里下河地区富硒土壤元素地球化学特征及其成因机制

基于江苏省里下河平原区所积累的有关生态地球化学调查数据,通过元素分布对比、相关分析、R型聚类分析、主成分分析等,系统探讨了该区富硒土壤的元素地球化学特征和成因机制,为合理开发利用第四纪沉积类型的富硒土地资源等提供了依据或线索。研究结果显示:里下河富硒土壤为典型的第四纪沉积成因,富有机质、偏还原的封闭的潟湖相沉积环境是形成局地富硒土壤的基础;富硒土壤特征元素组合为Se-OM-N-K-Fe-Co,主要位于地表30 cm以上深度,Se含量多为(0.3~0.4)×10^(-6),分布均匀;土壤中大多数元素之间有显著正相关性,Se-OM、Se-CEC的相关系数r分别为0.74、0.66,Se和pH之间有较显著负相关性,相关系数为-0.35;富硒土壤形成要经历成土母质初始富集、成土期间再富集和成土后表生富集3个富Se阶段,以及非潟湖相沉积物(如海相沉积等)的干扰,有机质吸附、胶体吸附和生物地球化学作用是导致土壤Se富集的主要原因;富硒土壤中还伴有Cu、Pb、Zn、Ni、Co、V等相对富集,但相关重金属未超标。

互花米草在江苏海岸的扩散现状及防治对策

互花米草作为我国沿海滩涂危害最大的外来植物,其防治已成为江苏省滨海湿地管理与保护的重要工作。(1)江苏省互花米草呈现出面积大、分布广、繁殖能力强、扩散风险高、治理难度大等特点。(2)不同治理技术各有优缺点,配合使用不同的综合治理技术,对环境影响较小,治理效果较好。(3)总结提出了构建预警监测体系、优化综合治理技术、降低人为干扰、强化科技支撑、开展治理后生态修复、构建长效管理和全民参与机制的防治策略,为其他地区互花米草的治理工作提供借鉴。

山东省沿黄地区规模化牛场全株玉米青贮发酵品质及营养价值评价

为了评定山东省沿黄地区全株玉米青贮发酵品质和营养价值,以了解规模化牛场青贮玉米的制作现状,试验于2023年3—5月份分别采集沿黄地区滨州市、东营市、德州市、菏泽市、济宁市、济南市、聊城市、泰安市、淄博市的规模化奶牛场(51个)和肉牛场(54个)全株玉米青贮饲料样品共105份,测定样品的发酵品质和营养成分,参照《青贮玉米品质分级》(GB/T 25882—2010)对全株玉米青贮品质进行分级。结果表明:淄博市全株玉米青贮中乳酸含量显著高于其他市(P<0.05);德州市全株玉米青贮pH值显著高于滨州市、东营市、菏泽市、聊城市、泰安市和淄博市(P<0.05),其中淄博市全株玉米青贮pH值最低(3.15)。泰安市、滨州市全株玉米青贮淀粉含量较高,极显著高于东营市、德州市、菏泽市、济宁市、淄博市(P<0.01),聊城市极显著高于德州市、济宁市(P<0.01);济南市显著高于德州市、济宁市(P<0.05)。济南市全株玉米青贮中性洗涤纤维含量最高,极显著高于菏泽市、济宁市,滨州市、聊城市极显著高于济宁市(P<0.01)。德州市全株玉米青贮酸性洗涤木质素含量最高,极显著高于滨州市、东营市、聊城市、泰安市、淄博市(P<0.01),显著高于济南市(P<0.05);菏泽市、济宁市极显著高于淄博市(P<0.01)。德州市全株玉米青贮粗灰分含量最高,显著高于滨州市、东营市、聊城市、淄博市(P<0.05),菏泽市显著高于滨州市、聊城市、淄博市(P<0.05)。泰安市、济南市、滨州市、聊城市全株玉米青贮粗脂肪含量较高,极显著高于济宁市(P<0.01);东营市、德州市、淄博市显著高于济宁市(P<0.05)。各市间全株玉米青贮中乙酸、丙酸、酸性洗涤纤维、干物质、粗蛋白含量均差异不显著(P>0.05)。泰安市全株玉米青贮饲料品质为一级;济南市、聊城市、滨州市为二级;淄博市、济宁市、德州市、东营市和菏泽市为三级。说明沿黄地区全株玉米青贮饲料品质良好。

社会-生态系统视角下快速城市化地区生态风险评价与管控分区——以江苏省为例

快速城市化地区是经济增长、社会进步和人口聚集的重要区域,但城市化进程中剧烈的土地利用变化、大规模城镇建设、人口集聚和资源消耗等问题使其面临严峻的生态风险,开展生态风险评价与管控研究对区域生态文明建设和高质量发展至关重要。引入社会-生态系统框架诠释生态风险形成机理,构建了基于“内生性-外源性-控制性”的生态风险评估框架,结合多源数据对2000—2020年江苏省生态风险时空特征进行测度,综合考虑生态风险现状和变化趋势划定生态风险分区,并针对性地提出区域生态风险预防和治理策略。研究结果显示:(1)社会-生态系统理论有助于深化对快速城市化地区生态风险的认识,基于快速城市化地区生态风险源头复杂、受体多元、表现多样的特征,构建集成“内生性-外源性-控制性”的生态风险解析框架,可为快速城市化地区的生态风险诊断和管控发挥积极作用;(2)近20a江苏省内生性生态风险和外源性生态风险有所增加,控制性生态风险略有降低,综合生态风险呈现“南高北低”“西高东低”的特点,高值区主要分布在经济发达、人口密集的城镇中心以及环境敏感区,且风险普遍有所上升,低值区主要分布在水域湿地、大城市郊区以及主要的交通线路;(3)研究期内江苏省生态风险持续下降型、波动下降型、稳定型、波动上升型和持续上升型占比分别为18.79%、2.96%、57.95%、15.88%、4.41%,并可据此将生态风险管控分区划分为生态风险紧急管控区、严格管控区、动态调控区、预防管理区、敏感监控区等5类分区,各区比例分别为12.05%、2.19%、64.42%、16.11%、5.22%。本研究可为解析和评估快速城市化地区的生态风险提供新的视角和方法,并为快速城市化地区的生态风险管理提供参考。

近50年浙江沿海地区降水变化特征分析

基于1971—2020年浙江沿海地区38个气象站点的逐日降水资料,运用线性倾向估计、滑动平均、Mann-Kendall检验等方法,对该地区近50年的降水变化特征进行了系统分析.结果表明:浙江沿海地区的降水量、极端降水强度及极端降水天数均呈现上升趋势;北部、中部沿海地区的降水量的年代际变化特征均呈现“少→多→少→多”的变化过程,而南部沿海地区则呈现“少→多”的变化过程;突变性检验的地区差异明显,北部沿海地区年降水量的突变现象出现在2013年,中部沿海地区出现在1973年和2012年,而南部沿海地区在20世纪70—80年代存在多个突变点;研究区的极端降水格局主要受热带气旋等因素的影响.该结果可以为浙江沿海地区的防灾减灾、海岸资源管理等提供科学依据和决策参考.

基于InSAR监测数据的采煤沉陷特征及稳定性分析——以江苏省沛县矿地融合示范区为例

为查明江苏省沛县采煤沉陷区时空发育特征、发展趋势及其危险程度,更好地指导地质灾害防治与生态环境修复工作,在煤矿开采资料分析和野外调查成果的基础上,开展基于多期Sentinel-1卫星的合成孔径雷达干涉测量数据技术的地表沉降监测。通过采煤沉陷区2018—2022年InSAR监测数据进行地表变形分析得知:2018—2022年,采煤沉陷区地表已沉降0.139~0.558 m,2022年6—12月采煤沉陷区地表沉降速率为0~2.159 mm/d;已稳沉沉陷区(老采空区)沉降量已接近最大值,沉降速率逐渐减小并趋于0,未稳沉沉陷区(新采空区)沉降量和沉降速率从0开始并逐渐增大;2022年底尚存在未稳沉沉陷区面积约18.45 km 2,主要分布在张双楼煤矿等煤矿近5 a开采区域。采煤沉陷区InSAR监测数据可以较好地反映这一时期的变形特征,研究可为沛县采煤沉陷区综合治理工作提供科学依据,亦可为其他类似区域采煤沉陷区特征分析和综合治理工作提供参照。

基于土地利用变化的苏南生境质量与生态红线评估

【目的】评估和模拟快速城镇化对生境质量的影响,为优化生态红线区和生态敏感区调整提供科学依据,进而优化国土空间规划和加强生态空间管控。【方法】以江苏省南部为例,基于PLUS模型、InVEST模型和热点分析等方法,评估2000、2010、2020年的土地利用变化规律、生境质量与退化度的时空演变、预测2030年的变化趋势,并综合定量评估生态红线区生境质量。【结果】(1)2000—2020年,苏南地区土地利用发生显著变化,主要表现为耕地向建设用地和水域转移;生境质量均值呈下降趋势,空间上形成了东西高,中间低的分布格局;生境退化度呈现“中心低–外部高”的圈层分布。(2)2030年3种土地利用模拟情景中,城镇发展情景下,耕地面积减少最多;生态保护情景下,森林和湖泊得到严格保护;可持续发展情景下建设用地规模得到控制。生境质量均值的排序为生态保护情景>可持续发展情景>城镇发展情景。(3)热点分析得出,2020年苏南地区乡镇尺度的生境质量和退化度呈集中分布,城镇中心为冷点区域,热点主要分布在森林和山脉,水域为生境质量的高值区。(4)生态红线区域内的生境质量整体高且相对稳定;在未来预测中,生态保护情景会扩大错位面积,可持续发展情景会降低错位面积。【结论】快速城镇化和人类活动剧烈是导致苏南地区和部分生态红线区内生境质量下降的主要原因。

江苏省农业农村新基建的内在逻辑与突破路径

推进农业农村新型基础设施建设,对加快发展农业新质生产力、实现农业农村现代化具有重要意义。文章在分析农业农村新型基础设施建设内在逻辑的基础上,以江苏省为研究对象,探讨了农业农村新型基础设施建设发展形势和面临的问题,并从加强政策扶持引导、加快普及推广新技术、加强农业科技创新、加快提升创新服务水平、加大对高素质农民的培育力度等方面提出对策建议。

海绵城市建设背景下江苏宿迁市中心城区水面率与内涝关系研究

水域作为城市生态系统的重要组成部分,是系统化全域推进海绵城市建设的重要内容。为了探究城市水面率与内涝风险的关系,通过GPS-RTK和网络RTK遥感技术对江苏宿迁市中心城区2023年水域面积进行动态监测,分析影响水面率变化的因素,并通过建立网格分区及不同排水分区,将城市易涝点与水面率结合,研究城市内涝与水面率之间的关系。结果表明:2023年12月宿迁市中心城区水域面积为31.824 km^(2),较2022年增加0.047%。引起水面率变化的原因中,人为因素占主导地位,海绵城市建设中水系连通、生态修复等措施是提升水面率的重要手段。水面率与内涝点分析表明水面率是影响城市内涝的因素之一,在水面率较低的区域更容易发生内涝。研究成果对系统化全域推进海绵城市建设具有重要意义。