A JUNCTURE FOR PROMOTING EAST-WEST ECONOMIC PROSPERITY IN CHINA-SUGGESTIONS ON ECONOMIC DEVELOPMENT IN CONTIGUOUS AREA OF JIN-SHAN-MONG

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用CAPPI和PPI资料测定区域降水量精度比较

应用上海中心气象台７１４数字化天气雷达的体积扫描资料所得的不同高度上的ＣＡＰＰＩ资料和低仰角时ＰＰＩ资料。估算区域降水量并得到降水量分布形势。然后采用平均校准法进行了校准，最后又与用雨量计网测量的区域降水量及其分布形势作了比较，得到一些有意义的结果。     

黄土丘陵沟壑区作物生产潜力影响因素分析——以王家沟流域为例

针对黄土丘陵沟壑区土壤侵蚀非常严重、作物产量低而不稳以及农业生产力水平低下的特点 ,本文首先分析了近几年来王家沟流域不同种类和不同年份作物生产力变化的特征 ,然后在地理信息系统 (GIS)技术支持下 ,利用基于土壤侵蚀条件下的YIELD作物生产力模型并结合各作物的实际观测资料 ,从降雨量、气温等气象因素以及地膜覆盖、施肥、梯田等耕作措施两方面分析了该小流域作物生产力变化的原因 ,结果表明在气象因素 (大气降水 )和土壤侵蚀的共同影响下 ,土壤水分和养分的变化是影响该区域作物生产力变化的主要制约因素。     

即墨地区莱阳群底部止凤庄组地质特征及其碎屑锆石LA-ICP-MS U-Pb年龄地质意义

为了了解盆地沉积初期的物源特征,对位于胶莱盆地东缘即墨地区早白垩世莱阳群止凤庄组沉积特征、物质组成及碎屑锆石进行了U-Pb同位素测年研究。野外调查表明,止凤庄组为一套陆源碎屑沉积,具有近源沉积的特点。南泊一带止凤庄组底部碎屑岩碎屑锆石LA-ICP-MS U-Pb年龄介于233~734 Ma,年龄分布于5个区间,呈现明显的幕式特征,至少记录了2次重要的构造热事件。侵入于止凤庄组石英二长岩的锆石U-Pb加权平均年龄为(123.50±0.95)Ma,限定了止凤庄组地层沉积上限年龄为123.50 Ma。综合分析认为,止凤庄组物源主要来自苏鲁造山带,部分来自扬子板块。这有助于了解胶莱盆地沉积初期其物源区苏鲁造山带的地体情况。     

The simulation of LUCC based on Logistic-CA-Markov model in Qilian Mountain area,China

The Qilian mountain area was examined for using the Logistic-CA-Markov coupling model combined with GIS spatial analyst technology to research the transformation of LUCC, driving force system and simulate future tendency of variation. Results show that:(1) Woodland area decreased by 12.55%, while grassland, cultivated land, and settlement areas increased by 0.22%, 7.92%, and 0.03%, respectively, from 1986 to 2014. During the period of 1986 to 2000, forest degradation in the middle section of the mountain area decreased by 1,501.69 km~2. Vegetation cover area improved, with a net increase of grassland area of 38.12 km~2 from 2000 to 2014.(2) For constructing the system driving force, the best simulation scale was 210m×210m. Based on logistic regression analysis, the contribution(weight) of composite driving forces to land use and cover change was obtained, and the weight value was more objectively compared with AHP and MCE method.(3) In the natural scenarios, it is predicted that land use and cover distribution maps of Qilian mountain area in 2028 and 2042, and the Lee-Sallee index test was adopted. Over the next 27 years(2015–2042), farmland, woodland, grassland, settlement areas show an increasing trend, especially settlements with an obvious change of 0.56%. The area of bare land will decrease by 0.89%. Without environmental degradation, tremendous structural change of LUCC will not occur, and typical characteristic of the vertical zone of the mountain would remain. Farmland and settlement areas will increase, but only in the vicinity of Qilian and Sunan counties.     

华南地区港口体系与功能分化对海南洋浦 自贸港建设的启示

中国华南沿海地区地处海上丝绸之路的必经之地,其周边港口的航运网络及其临港产业的建设对推进跨区域的社会文化活动和经济合作具有重要意义。通过对比分析海南洋浦港与中国华南地区9个典型港口的航运网络特征及其临港区产业类型可以发现：（1）洋浦港目前的集装箱吞吐量及其市场占有率还比较少,2020年集装箱吞吐量为101.93万TEU,仅占整个华南地区10个典型港口比重的1.25%,并且仅与地区内的钦州港、新加坡港、胡志明港有较高航运频次。洋浦港在航线布局上,亟待向香港港、广州港和深圳港靠齐,提升中国在环南海区域的“近洋”布局并不断推动洲际“远洋”航线地开通;（2）洋浦港临港区域企业数量由2005年的326个增加至1461个,在区域港口中总占比由2005年0.18%提升至2015年0.47%。但各企业分布密度均较其他港区小。其中直接涉海的海运装卸业与跨境物流产业数量都较少;依存产业建设方面目前主要依托于渔业的发展,其他船舶制造业、建筑工程业也较少;与港务相关的服务业中,洋浦港提供的服务类型也较少,主要集中为零售业,缺少海运保险和海洋金融等服务业类型。因此,海南港口在高质量发展的新常态下,需要从业务“多元化”向区域“基地化”实现转型发展,即要注重与华南地区典型港口之间的相互“交流”以及港口与临港区产业经济活动之间的互动,逐步形成优势互补、分工合理、相互协作、竞争有序的沿海港口群体。     

Detecting Arctic snow and ice cover with FY-1D global data

Chinese meteorological satellite FY-1D can obtain global data from four spectral channels which include visible channel(0.58-0.68 μm) and infrared channels(0.84-0.89 μm,10.3-11.3 μm,11.5-12.5 μm).2366 snow and ice samples,2024 cloud samples,1602 land samples and 1648 water samples were selected randomly from Arctic imageries.Land and water can be detected by spectral features.Snow-ice and cloud can be classified by textural features.The classifier is Bayes classifier.By synthesizing five d ays classifying result of Arctic snow and ice cover area,complete Arctic snow and ice cover area can be obtained.The result agrees with NOAA/NESDIS IMS products up to 70%.     

大都市空间扩展的廊道效应与景观结构优化*──以北京市区为例

由于存在城市中心梯度场和廊道效应梯度场,在单纯经济利益趋动下,城市本质上存在摊大饼倾向,这将严重破坏城市合理景观结构与生态平衡.文中运用廊道效应原理,研究人工廊道与自然廊道相互作用过程,结合北京中心市区不同时期空间扩展格局,分析城市景观8个方位廊道的扩展量、扩展速度及变化趋势,提出将自然廊道体系纳入北京大都市区规划,形成人工廊道与自然廊道相间分布的星状分散集团式景观格局,以有效阻止建成区摊大饼过程.     

Ecosystem Health: Assessment Framework,Spatial Evolution,and Regional Optimization in Southwest China

Regional ecological health,the core of comprehensive ecosystem assessments,is an important foundation for regional exploration,environmental conservation,and sustainable development.The mountainous areas in southwest China are backward in economy,but industrialization and urbanization have been rapid in recent years.This study assessed the ecosystem health of the Sichuan and Yunnan provinces in China using a pressure-state-response(PSR)model.Spatiotemporal patterns of regional ecosystem health were analyzed from 2000 to 2016,including overall characteristics as well as local characteristics.Ecosystem health in most regions was improved over time(Y=0.0058 X–11.0132,R2=0.95,P<0.001),and areas with poorer ecosystem health decreased from half to one-third of the total area.Analysis of the primacy ratio and the variation coefficient confirmed that the gap in health scores between regions has gradually expanded since 2007,but there are more high quality regions overall(Z of Moran’s index<1.96,P>0.05).Overall,the regional ecosystems to the east of the Hu line-an imaginary line dividing east and west China into roughly equivalent parts-were healthier than those to the west.The pressure and state scores of ecosystems were determined by physiographic condition,and the response scores by government policies and social concern.The spatiotemporal patterns of ecosystem health were dominated to a greater extent by natural than anthropogenic factors,which explains why the shift in the patterns aligned with the direction of the Hu line.Dividing regions into key management areas based on natural geographical conditions and socioeconomic development could contribute to the formulation of a reasonable ecological and environmental protection policy,guaranteeing ecosystem services in the long run.