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| 1 | Black carbon aerosols and their radiative properties in the Pearl River Delta region显示文摘The climatic and environmental effects of atmospheric aerosols are a hot topic in global science community, and radiative properties of the aerosols are one of the important parameters in assessing climatic change. Here we studied the black carbon concentration and absorption coefficient measured with aethalometers, scattering coefficient measured with nephelometers, and single scattering albedo derived at an atmospheric composition watch station in Guangzhou from 2004 to 2007. Our main results are as follows. The data of black carbon concentration and absorption coefficients measured with instruments cannot be directly used until they are measured in parallel with internationally accepted instruments for comparison, calibration, and reduction. After evaluation of the data, the result shows that the monthly mean of BC concentration varies 3.1―14.8 μg·m-3 and the concentration decreases by about 1 μg·m-3 in average over the four years; It is higher in the dry season with a multi-year mean of 8.9 μg/m3 and lower in the rainy season with a multi-year mean of 8.0 μg·m-3; The extreme maximum of monthly mean concentration occurred in December 2004 and extreme minimum in July 2007, and a 4-year mean is 8.4 μg·m-3. It is also shown that monthly mean scattering coefficient derived varies 129 -565 Mm-1, monthly mean absorption coefficient 32-139 Mm-1, and monthly mean single scattering albedo 0.71-0.91, with annual mean values of 0.80, 0.82, 0.79 and 0.84 for 2004, 2005, 2006 and 2007, respectively. Three instruments were used to take simultaneous measurements of BC in PM10, PM2.5, and PM1 and the results showed that PM2.5 took up about 90% of PM10 and PM1 accounted for about 68% of PM2.5, and BC aerosols are mainly present in fine particulates. The variability of BC concentrations is quite consistent between the Nancun station (141 m above sea level) and the Panyu station (13 m above sea level), which are 8 km apart from each other. The concentration in higher altitude station (Panyu) is consistently lower than the lower altitude station (Nancun), and the difference of annual mean is about 4 μg·m-3. | WU Dui MAO JieTai DENG XueJiao TIE XueXi ZHANG YuanHang ZENG LiMin LI Fei TAN HaoBo BI XueYan HUANG XiaoYing CHEN Jing DENG Tao | 2009 | Science China Earth Sciences2009，52，8： | 58 |
| 2 | Regional ozone pollution and key controlling factors of photochemical ozone production in Pearl River Delta during summer time显示文摘An intensive field campaign including measurements from the environmental monitoring network and from two super sites took place in the Pearl River Delta region in summer 2006.Using routinely measured O3 and NOx concentrations,the spatial and temporal variation of O3 and of the total oxidant concentrations was characterized.According to the spatial variability of NO2/NO,the two super sites were found to be representative of polluted urban and downwind suburban conditions.In addition,both sites were located in high O3 regions.In-depth diagnostic of photochemical ozone production processes and their key controlling factors are achieved with an observation-based model(OBM) to gain regional perspectives.Budget analysis and sensitivity model runs show that aldehyde and HONO chemistry had significant impacts on local photochemical ozone production rates.The analysis of calculated Relative Incremental Reactivities shows that photochemical ozone production rates are mainly sensitive to anthropogenic hydrocarbons(HCs) in the polluted urban areas.In the suburban areas,sensitivity to nitrogen oxide(NO) concentrations dominated.Key anthropogenic HCs in both areas are alkenes and aromatics.Significant differences of ozone production efficiencies are identified between the urban and suburban regions,consistent with the OBM diagnosed results. | CHANG ChihChung CHOU C.K.Charles Andreas Wahner | 2010 | Science China Chemistry2010，53，3： | 34 |
| 3 | 增长与收缩——珠三角城市经济韧性的测度与影响因素(英文)显示文摘In the aftermath of the global financial crisis of 2008, China witnessed gradual shrinkage of cities in the Pearl River Delta(PRD). In this study, we introduce the concept of economic resilience to analyse urban growth and shrinkage in the context of a rapidly-urbanising region. Multiple regression analysis is performed to explore the determinants of economic resilience in the PRD. By measuring resistance in the shrinking phase and recoverability in the growing phase in a group of cities in the PRD, this study distinguishes four scenarios and investigates their characteristics from a spatial perspective. The results demonstrate that the financial crisis had a severe and asymmetric influence on this area, indicating more than 15% of cities are faced with shrinking. The spatial distribution of economic resilience indicates a centre-periphery pattern, that is, high economic resilience in the inner ring and low economic resilience in the outer ring of the PRD. The service economy is found to play a significant role in promoting urban economic resilience. Results imply that sound economic policies for enhancing resilience: both poor local financial status and a high degree of export concentration adversely impact resistance, while upgrading the manufacturing economy and stimulating of industrial innovation are conducive to improve recoverability. | 杜志威 张虹鸥 叶玉瑶 金利霞 徐茜 | 2019 | Journal of Geographical Sciences2019，29，8： | 27 |
| 4 | Air pollution characteristics and their relationship with emissions and meteorology in the Yangtze River Delta region during 2014–2016显示文摘With rapid economic growth and urbanization, the Yangtze River Delta(YRD) region in China has experienced serious air pollution challenges. In this study, we analyzed the air pollution characteristics and their relationship with emissions and meteorology in the YRD region during 2014–2016. In recent years, the concentrations of all air pollutants, except O3,decreased. Spatially, the PM2.5, PM10, SO2, and CO concentrations were higher in the northern YRD region, and NO2 and O3 were higher in the central YRD region. Based on the number of non-attainment days(i.e., days with air quality index greater than 100), PM2.5 was the largest contributor to air pollution in the YRD region, followed by O3, PM10, and NO2.However, particulate matter pollution has declined gradually, while O3 pollution worsened.Meteorological conditions mainly influenced day-to-day variations in pollutant concentrations. PM2.5 concentration was inversely related to wind speed, while O3 concentration was positively correlated with temperature and negatively correlated with relative humidity.The air quality improvement in recent years was mainly attributed to emission reductions.During 2014–2016, PM2.5, PM10, SO2, NOx, CO, NH3, and volatile organic compound(VOC)emissions in the YRD region were reduced by 26.3%, 29.2%, 32.4%, 8.1%, 15.9%, 4.5%, and0.3%, respectively. Regional transport also contributed to the air pollution. During regional haze periods, pollutants from North China and East China aggravated the pollution in the YRD region. Our findings suggest that emission reduction and regional joint prevention and control helped to improve the air quality in the YRD region. | Tao Ma Fengkui Duan Kebin He Yu Qin Dan Tong Guannan Geng Xuyan Liu Hui Li Shuo Yang Siqi Ye Beiyao Xu Qiang Zhang Yongliang Ma | 2019 | Journal of Environmental Sciences2019，31，9： | 26 |
| 5 | HYDRAULICS OF COMPOUND CHANNEL WITH VEGETATED FLOODPLAINS显示文摘Experimental researches were conducted on flood carrying capacity of compound open channels with wide and narrow floodplains as well as hydrodynamic behavior of overbank flow across vegetated floodplains. Results show that hydrodynamic behavior of compound channels with narrow floodplains is different from that of the wide floodplains. In such compound channels with narrow vegetated floodplains as in the Pearl River delta nework, it has been found that vegetated domains become really impenetra ble when the length of vegetated domain is larger than Lm, the length of f low in floodplain coming into the main channel, and that the influence of vegeta ted floodplains upon flood stages of a channel is not very significant. | Huang Ben-sheng, Lai Guan-wen, Qiu Jing, Lin Shu-zhong (Guangdong Research Institute of Water Conservancy & Hydro-Power, Guangzhou 510610, China | 2002 | Journal of Hydrodynamics2002，14，1： | 21 |
| 6 | Delta1-IRES-EGFP双顺反子逆转录病毒表达载体的构建及鉴定显示文摘目的 构建并鉴定人Delta1和增强型绿色荧光蛋白(EGFP)基因双顺反子逆转录病毒表达载体。方法 利用基因重组技术将人Delta1基因构建到含IRES EGFP逆转录病毒载体中;电穿孔法将重组质粒pDelta1 IRES EGFP分别转入单、双嗜性包装细胞GP +E86和PA3 17,嘌呤霉素(puromycin)筛选获得阳性表达克隆;“乒乓球”法提高病毒滴度;重组病毒感染NIH3T3细胞,流式细胞仪(FACS)及RT PCR法分别检测细胞荧光和Delta1mRNA表达变化;C2C12共培养实验检测蛋白的功能。结果 酶切、PCR鉴定及DNA测序证实逆转录病毒表达载体pDelta1 IRES EGFP构建正确;经体外包装,获得最高滴度9 7×10 5CFU ml的重组病毒液;重组病毒液感染NIH3T3细胞,FACS检测部分细胞荧光强度显著提高;RT PCR证实细胞内有外源基因Delta1表达;C2C12共培养实验证实外源蛋白Delta1可抑制C2C12细胞的分化。结论 逆转录病毒基因转移系统安全,效率较高,可获得外源基因长期、稳定的表达。 | 何飞 谭颖徽 杨峥嵘 | 2005 | 第三军医大学学报2005，27，12： | 19 |
| 7 | Magnetic properties of sediments from the Pearl River Delta,South China:Paleoenvironmental implications显示文摘Magnetic parameters and their environmental implications of sediments in a core (PD) from the Pearl River Delta, South China, indicate that ferrimagnetic minerals with low coercivity, such as magnetite, dominate the magnetic properties although small amounts of Fe-sulphides occur. The fraction of Fe-sulphides increases and becomes the dominant minerals determining the magnetic characteristics in grey-black organic-rich clay horizons, indicating an anoxic, sulphate-reducing swamp environment resulting from a marine regression. In the 'Huaban clay' , hard magnetic minerals, such as hematite and goethite, largely control the magnetic properties of the sediments and imply a long period of exposure and weathering. Where magnetite is the main magnetic mineral, its fraction and grain size determine properties such as magnetic susceptibility (κ ) and saturation isothermal remanent magnetization (SIRM). Ratios of SIRM/κ and χarm/SIRM reflect changes in sea level with high SIRM/κ and χarm/SIRM correlating with a smaller magnetic mineral grain size and rising sea level. Based on downcore variations of these environmental magnetic parameters along with sediment characteristics and microfauna, the sedimentary environment of the Pearl River Delta area can be divided into two main cycles of transgression and regression during the late Pleistocene and Holocene with more sub-cycles of sea level fluctuation during each transgression. | Rodney GRAPES | 2008 | Science China Earth Sciences2008，51，1： | 13 |
| 8 | Dynamic Changes in the Wetland Landscape Pattern of the Yellow River Delta from 1976 to 2016 Based on Satellite Data显示文摘The Yellow River Delta wetland is the youngest wetland ecosystem in China's warm temperate zone. To better understand how its landscape pattern has changed over time and the underlying factors responsible, this study analyzed the dynamic changes of wetlands using five Landsat series of images, namely MSS(Mulri Spectral Scanner), TM(Thematic Mapper), and OLI(Operational Land Imager) sensors in 1976, 1986, 1996, 2006, and 2016. Object-oriented classification and the combination of spatial and spectral features and both the Normalized Difference Vegetation Index(NDVI) and Normalized Difference Water Index(NDWI), as well as brightness characteristic indices, were used to classify the images in eCognition software. Landscape pattern changes in the Yellow River Delta over the past 40 years were then delineated using transition matrix and landscape index methods. Results show that: 1) from1976 to 2016, the total area of wetlands in the study area decreased from 2594.76 to 2491.79 km^2, while that of natural wetlands decreased by 954.03 km^2 whereas human-made wetlands increased by 851.06 km^2. 2) The transformation of natural wetlands was extensive: 31.34% of those covered by Suaeda heteropteras were transformed into reservoirs and ponds, and 24.71% with Phragmites australis coverage were transformed into dry farmland. Some human-made wetlands were transformed into non-wetlands types: 1.55% of reservoirs and ponds became construction land, and likewise 21.27% were transformed into dry farmland. 3) From 1976 to 2016, as the intensity of human activities increased, the number of landscape types in the study area continuously increased. Patches were scattered and more fragmented. The whole landscape became more complex. In short, over the past 40 years, the wetlands of the Yellow River Delta have been degraded, with the area of natural wetlands substantially reduced. Human activities were the dominant forces driving these changes in the Yellow River Delta. | CONG Pifu CHEN Kexin QU Limei HAN Jianbo | 2019 | Chinese Geographical Science2019，29，3： | 12 |
| 9 | Delta V DCS在过程控制实验装置中的应用显示文摘集散控制系统已成为流程工业控制的重要组成部分,对于学生相关知识与技能的培养也成为专业教学的重要一环,但实验设备的匮乏却极大地制约了学生技能的学习与获取。给出一种基于EMERSON-DeltaVDCS的过程控制实验系统。首先介绍了A3000型过程控制实验装置的结构组成,以及DeltaV集散控制系统的特点;其后给出了基于DeltaVDCS的过程控制实验系统的基本结构,硬软件配置、功能以及应用系统组态的基本思路与实施结果。应用表明,系统为学生在专业理论学习与实际工程应用之间搭建了一座桥梁。 | 邹益民 马应魁 | 2011 | 电气自动化2011，33，4： | 11 |
| 10 | Sedimentary facies and depositional model of shallow water delta dominated by fluvial for Chang 8 oil-bearing group of Yanchang Formation in southwestern Ordos Basin,China显示文摘A systematic analysis of southwestern Ordos Basin's sedimentary characteristics,internal architectural element association styles and depositional model was illustrated through core statistics,well logging data and outcrop observations in Chang 8 oil-bearing group.This analysis indicates that shallow water delta sediments dominated by a fluvial system is the primary sedimentary system of the Chang 8 oil-bearing group of the Yanchang Formation in southwestern Ordos Basin.Four microfacies with fine grain sizes are identified: distributary channels,sheet sandstone,mouth bar and interdistributary fines.According to the sandbody's spatial distribution and internal architecture,two types of sandbody architectural element associations are identified: amalgamated distributary channels and thin-layer lobate sandstone.In this sedimentary system,net-like distributary channels at the delta with a narrow ribbon shape compose the skeleton of the sandbody that extends further into the delta front and shades into contiguous lobate distribution sheet sandstone in the distal delta front.The mouth bar is largely absent in this system.By analyzing the palaeogeomorphology,the palaeostructure background,sedimentary characteristics,sedimentary facies types and spatial distribution of sedimentary facies during the Chang 8 period,a distinctive depositional model of the Chang 8 shallow water fluvial-dominated delta was established,which primarily consists of straight multi-phase amalgamated distributary channels in the delta plain,net-like distributary channels frequently diverting and converging in the proximal delta front,sheet sandstones with dispersing contiguous lobate shapes in the distal delta front,and prodelta or shallow lake mudstones. | 陈林 陆永潮 吴吉元 邢凤存 刘璐 马义权 饶丹 彭丽 | 2015 | Journal of Central South University2015，22，12： | 11 |
| 11 | Rare earth(Eu^(2+),Ce^(3+)) activated BaAl_2Si_2O_8 blue emitting phosphor显示文摘Blue emitting rare earth(Eu2+,Ce3+) doped BaAl2Si2O8 phosphors were synthesized by combustion methods at 600 oC. BaAl2Si2O8: Eu2+ phosphor showed isolated broad blue emission band at 455 nm, when it was excited with the wavelength of 329 nm. Whereas BaAl2Si2O8:Ce3+ phosphor exhibited blue emission band at 442 nm, under 303 nm excitation wavelength. These observed emission bands of Eu2+ and Ce3+ ions corresponded to 5d-4f allowed transitions. The position of emission band was calculated by using the equation a1(80= 1 10 nE rVE Q)4V-éùêú-÷′ê÷úêè ú. Also the spin orbit splitting difference in the ground state levels of Ce3+ ion was studied by Gaussian curve fitting. Broad absorption and emission bands in blue regions made prepared phosphors a promising blue host for the white-LEDs. | V.B.Pawade N.S.Dhoble S.J.Dhoble | 2014 | Journal of Rare Earths2014，32，7： | 10 |
| 12 | Delta工艺中Inconel 718合金中δ相的演变机制显示文摘针对Inconel 718合金的Delta工艺,采用金相显微镜、扫描电镜和定量X射线衍射技术研究了变形温度为950℃、应变速率为0.005 s^(-1)的等温压缩变形中δ相的演变机制.结果表明:在变形前的加热和保温阶段,时效处理过程中晶内析出的颗粒/短棒状δ相全部溶解消失,δ相含量由8.14%降低为7.05%;在变形过程中δ相发生了溶解,含量由7.05%进一步降低为5.14%;由于变形断裂和溶解断裂的综合作用,片层/长针状δ相发生球化,由片层/长针状δ相转变为颗粒/短棒状δ相;在变形量最大的芯部,片层/长针状δ相全部消失,颗粒/短棒状δ相分布于晶内与晶界. | 张海燕 张士宏 程明 | 2009 | 金属学报2009，45，12： | 10 |
| 13 | 并联机构力传递的分析显示文摘以Delta并联机构为例,利用矢量力学方法和虚功原理建立静力传递数学模型.通过模型仿真分析了机构运动件重力补偿力矩.提出了机构的力传递能力概念,探讨了工作点的力传递能力和力雅可比矩阵条件数的关系,初步分析了给定工作空间力传递能力的分布.提出的力传递指标和所得结论可用于优化Delta机构以及其他机构的力传递性能. | 韩江义 游有鹏 王化明 朱剑英 | 2009 | 机器人2009，31，6： | 9 |
| 14 | Evolution of the Yellow River delta, China: Impacts of channel avulsion and progradation显示文摘The evolution of the Yellow River delta is characterized by heavy sediment load,rapid seaward migration,frequent avulsions,and intense anthropogenic disturbances.Evolution of the delta channel following avulsions is very complex and has not yet been thoroughly understood.In the research presented by this paper,we conducted comprehensive analyses of the changes in the water stages,slopes,longitudinal profiles,and the erosion and deposition in the Yellow River delta channels during a time period of over five decades.Results showed that,following each avulsion,channels migrated seaward at decaying rates and the slopes at the downstream of the avulsion point decreased exponentially with time and completed its major adjustment within about four to five years.A generalized geometric model was proposed to describe the changes in the longitudinal profiles of the delta channels.A calculation method to determine the characteristic water stages at the delta was proposed based on the geometric model and the delayed response model for the morphological responses of fluvial rivers to perturbations.Water stages corresponding to a discharge of 3000 m^3/s at Lijin and Xihekou during 1954 through 2012 were calculated by using the proposed method.The proposed method may be used to predict the evolution of the delta channels in response to artificial avulsions at the Yellow River delta in the future. | Shan Zheng Baosheng Wu Kairong Wang Guangming Tan Shasha Han Colin R. Thorne | 2017 | International Journal of Sediment Research2017，32，1： | 9 |
| 15 | Evolution of Yellow River Delta Coastline Based on Remote Sensing from 1976 to 2014, China显示文摘Coastal regions are threatened by natural processes, such as erosion driven by storm surges and the effect of jetties, as well as by human behavior. The coastline of the Yellow River Delta(YRD) was monitored using the general high-tide line method, which combines Remote sensing(RS) and geographic information system(GIS) technology, using multi-spectral scanner(MSS), thematic mapper(TM), and enhanced thematic mapper plus(ETM+) images of the YRD from 1976 to 2014 as a data source. The results demonstrated that the shape and length of the YRD coastline has changed dramatically since 1976. The course of the Diaokouhe channel has resulted in mainly inland erosion in the north, and is primarily marine erosion; therefore, it was termed an erosion-type estuary. However, the coastline of the Qingshuigou course has moved seaward, demonstrating an accretion stage, and was therefore termed an accretion-type estuary. The coastline advanced forward before 1997 and shrank after 2003 in the southern part of the river mouth, which was due to the shift in the river mouth in 1996. It has continually extended outward in the northern part of the river mouth from 2003 onward. The coastline in the southern part of the river mouth has moved randomly, with the occurrence of both erosion and sedimentation caused by land reclamation and sea wave intrusion. In most cases, the coastline has extended offshore, especially in the northern part of the river mouth. The YRD coastline has changed frequently and rapidly from 1992 to 2014. The river mouth channel, river water and sediments, and precipitation were the major factors affecting the YRD. The YRD coastline was mainly in an accretion stage during flow periods. The erosion rate decreased and tended to be stable during a dry period. The coastline was basically stable when dry periods occurred over a long period. The location of Yellow River ports and sea erosion were the main factors driving coastline changes. The coastline was mainly influenced by the flow path of the Yellow River, with recent human activity also becoming a factor. | WANG Kuifeng | 2019 | Chinese Geographical Science2019，29，2： | 9 |
| 16 | A gradient analysis on urban sprawl and urban landscape pattern between 1985 and 2000 in the Pearl River Delta, China显示文摘Urbanization is an irreversible trend world- wide,especially in rapidly developing China.Accelerated urbanization has resulted in rapid urban sprawl and urban landscape pattern changes.Quantifying the spatiotemporal dynamics of urban land use and landscape pattem not only can reveal the characteristics of social transfer and economic development,but also can provide insights into the driving mechanisms of land use changes.In this study,we integrated remote sensing (RS),geographic information system (GIS),landscape metrics,and gradient analysis to quantitatively compare the spatiotemporal dynamics of land use,urban sprawl,and landscape pattern for nine cities in the Pearl River Delta from 1985-2000. For the whole study region,urbanization was obvious.The results show an increase in urban buildup land and shrinkage of cropland in the Pearl River Delta.However, the nine cities differed greatly in terms of the process and magnitude of urban sprawl for both the spatial and temporal dimensions.This was most evident for the cities of Guangzhou and Shenzhen.Gradient analysis on urban landscape changes could deepen understanding of the stages of urban development and provide a scientific foundation for future urban planning and land management strategies in China. | Erfu DAI Zhuo WU Xiaodian DU | 2018 | Frontiers of Earth Science2018，12，4： | 8 |
| 17 | 胃癌病人血清DLL4与VEGF表达及临床意义显示文摘目的检测胃癌病人血清中Delta like样配体4(DLL4)和血管内皮生长因子(VEGF)的表达,探讨其与临床病理参数的关系及两者的相关性。方法应用双抗体夹心酶联免疫吸附试验,检测胃癌病人(胃癌组)术前及术后2周血清DLL4与VEGF表达,并与胃腺瘤病人(胃腺瘤组)及对照组进行比较。结果胃癌组病人术前血清中DLL4和VEGF的表达均显著高于胃腺瘤组及对照组(F=811.84、831.83,q=41.30~50.14,P<0.01)。两者在胃癌术前血清中的表达与肿瘤组织学分化程度、浸润深度、淋巴结转移、远处转移及TNM分期密切相关(t=2.27~6.87,P<0.05),而与病人性别、年龄、肿瘤大小及Borrmann分型等因素无关(P>0.05)。胃癌组DLL4和VEGF表达水平呈显著正相关(r=0.870,P<0.01)。胃癌组术后2周血清DLL4与VEGF表达水平均较术前明显下降(t=82.11、184.66,P<0.01)。结论 DLL4在胃癌血清中的表达上调与VEGF有关,它们可能共同参与调控肿瘤血管的发生、发展。血清DLL4与VEGF的检测有助于胃癌的早期诊断及治疗,两者可以作为胃癌血清检测的新指标。 | 李乾坤 赵清喜 丁雪丽 周岩冰 李玉军 | 2013 | 齐鲁医学杂志2013，28，2： | 8 |
| 18 | Confined gravity flow sedimentary process and its impact on the lower continental slope,Niger Delta显示文摘There is active gravity flow sedimentation on the lower continental slope of Niger Delta. High-resolution 3-D seismic data enable a detailed study on the gravity flow deposition process and its impact. The lower continental slope of Niger Delta is characterized by a stepped complex topography, which resulted from gravity sliding and spreading during Miocene and Pliocene. Two types of accommodations are identified on the slope: ponded accommodation as isolated sub-basins and healed slope accommodation as connected tortuous corridors, where multi-scale submarine fans and submarine channels developed. Gravity flow deposition process is affected by the characteristics of gravity flows and the receiving basin. At the early stage, gravity flow deposition process was dominated by 'fill and spill' pattern in the ponded accommodation, whereas it was confined to the healed slope accommodation during the late stage. On the lower continental slope of Niger Delta, complex slope topography controlled the distribution and evolution of the gravity flow, producing complicated gravity depositional patterns. | LI Lei1,2*, WANG YingMin1, ZHANG LianMei3 & HUANG ZhiChao4 1 College of Geosciences, China University of Petroleum, Beijing 102249, China 2 School of Petroleum Resources, Xi’an Shiyou University, Xi’an 710065, China 3 School of Resources & Geoscience, China University of Mining & Technology, Xuzhou 221008, China 4 Institute of Shanghai Offshore Oil & Gas Company, China Petroleum & Chemical Corporation, Shanghai 200120, China | 2010 | Science China Earth Sciences2010，53，8： | 8 |
| 19 | Characteristics of landscape information Tupu of the Yellow River swings and its subdeltas during 1855―2000显示文摘Based on the theories and methods of cartography on spatial pattern and temporal evolution in Geo-information Tupu (Carto-methodology in Geo-information, CMGI) and the quantitative measurements of pattern and process in landscape ecology, the methodology of landscape information Tupu in studying the swing process of the Yellow River (YR) over the Yellow River Delta (YRD) during 1855― 2000 has been demonstrated. The main content includes: (1) methodology of landscape information Tupu; (2) evolution process Tupu of YR rump channels; (3) evolution process Tupu of the 7 pieces of subdeltas in YRD during 1855―2000; (4) landscape information Tupu of the modern YRD and the current YRD; (5) landscape information Tupu of YR rump channels on the 7 pieces of subdeltas during 1855―2000; and (6) corridor-matrix landscape information Tupu by YR swings. The methodology of landscape information Tupu here is still primary but we hope that it could provide a new tool for exploring an integrated research on spatiotemporal approaches for landscape 'pattern and process'. | YE QingHua1,3?, CHEN ShenLiang2, HUANG Chong4, XUE YunChuan5, TIAN GuoLiang3, CHEN ShuPeng3,4, SHI YaNan4, LIU QingSheng4 & LIU GaoHuan4 1 Institute of Tibetan Plateau Research (ITPR), Chinese Academy of Sciences (CAS), Beijing 100085, China 2 State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China 3 State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications (IRSA), CAS, Beijing 100101, China 4 Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 5 Qingdao Meteorological Bureau, Qingdao 266003, China | 2007 | Science China Earth Sciences2007，50，10： | 8 |
| 20 | CHARACTERISTICS OF ENVIRONMENTAL AND CLIMATE CHANGE IN CHANGJIANG DELTA AND ITS POSSIBLE MECHANISM显示文摘Characteristics of climate change in the Changjiang Delta were analyzed based on the annualmean meteorological data since 1961,including air temperature,maximum and minimum airtemperature,precipitation,sunshine duration and visibility at 48 stations in that area(southernJiangsu and northern Zhejiang),and its adjacent areas(northern Jiangsu,eastern Anhui andsouthern Zhejiang),together with the environmental data.The results indicate that it is gettingwarmer in the Changjiang Delta and cooler in adjacent areas,thus the Changjiang Delta becomes a bigheat island,containing many little heat islands consisting of central cities,in which Shanghai City isthe strongest heat island.The intensity of heat islands enhances as economic development goes up.From the year 1978.the beginning year of reform and opening policy,to the year 1997,the intensityof big heat island of Changjiang Delta has increased 0.5℃ and Shanghai heat island increased 0.8℃.However.since 1978 the constituents of SO2,NOx and TSP(total suspended particles)in theatmosphere,no matter whether in the Changjiang Delta or in the adjacent areas,have all increased,but pH values of precipitation decreased.In the meantime,both sunshine duration and visibility arealso decreased,indicating that there exists a mechanism for climate cooling in these areas.Ouranalyses show that the mechanism for climate warming in the Changjiang Delta may be associatedwith heating increase caused by,economic development and increasing energy consumption.It isestimated that up to 1997 the intensity of warming caused by this mechanism in the Changjiang Deltahas reached 0.8—0.9℃,about 4—4.5 times as large as the mean values before 1978.Since then,the increase rate has become 0. 035℃/a for the Changjiang Delta.It has reached 1.3℃ for Shanghaiin 1997,about 12—13 times as large as the mean values before 1978.This is a rough estimation ofincreasing energy consumption rate caused by economic development. | 陈隆勋 朱文琴 周秀骥 | 2000 | Acta meteorologica Sinica2000，14，2： | 8 |
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