青岛浮山野生花卉种质资源

本文简要叙述了青岛浮山野生花卉的种类、生长环境、园林用途及开花结果日期，为把这些野生花生花卉引进城市园林提供科学依据。     

Field Placement and Evaluation of Stabilized Dredged Material (SDM) from the New York/New Jersey Harbor

Since the 1997 local ban on ocean dumping of dredged sediments, the States of New York and New Jersey have pursued a policy of environmentally sound solutions to the management of dredged material, including beneficial use of stabilized dredged material (SDM) in transportation applications. A pilot study was initiated in 1998 to evaluate the use of SDM in the construction of highway embankments. Utilizing 80,000 cubic yards of dredged material, two embankments were constructed from SDM on a commercial development area adjacent to the Harbor. Geotechnical properties and handling of SDM were evaluated both during and one year post - construction. This article presents the evaluation of the embankments themselves, including constructability and performance. The results demonstrate that SDM satisfies most of the geotechnical criteria for fill construction, except those for durability, requiring proper coverage and protection similar to that provided for fills constructed on cohesive soils. This same characteristic precludes long term stockpiling of SDM prior to final placement, limiting applications to those that have schedules overlapping with dredging projects. Increased costs for the use of SDM can be as high as $8 per cubic yard over traditional fills; however, this cost may be recouped through management fees collected from dredging projects.     

Does subterranean flow initiate mud banks off the southwest coast of India?

Coastal waters off the southwest coast of India draw special attention because of the occurrence of mud banks at certain locations during southwest monsoon period. The present study puts forward a hypothesis of a subterranean flow, which could be a plausible mechanism to initiate the mud banks. The subterranean flow is believed to be coupled with activated trending faults and originate from the adjacent watershed (Vembanad Lake) separated from the sea by a narrow strip of land where submerged porous lime shell beds are present. When the lake water injection occurs through the fault, the mud/clay gets excited by its thixotrophic properties (as the overlying water looses its electrolyte) and transforms into a flowing fluid. The lowering of salinity due to the introduction of fresh water keeps the mud suspension in the water column for longer duration, leading to the formation of mud banks. The idea of subterranean flow through lime shell beds initiating formation of mud banks may apply globally to any coastal regions hugged by wetlands and of similar geological conditions.     

Study on Key Technology of Using Shell Sand as Backfill for Sea Reclamation

1 .IntroductionEpicontinental sea or land could formfromcontinental shelf because of the decreasing sea levelduring Quaternary.There is a large-area shell sand deposit more than ten meters thick in the neriticzone of China .To use the abundant marine shell sandresource as engineering material for ocean engi-neering and port engineeringis veryimportant .Sand (Gred and Bjorn,1999) ,fine sand (Zhangetal .,2002) , mediumand coarse sand (Qiuet al .,1995) ,highly weathered stone ballast (Zhanetal…     

激光雷达技术在我国地形测图中应用前景广阔

激光雷达技术（Light Detection and Ranging,LiDAR）是近十年来快速发展并得到广泛应用的测量手段。美国地质调查局（USGS）、美国国家宇航局（NASA）以及美国地质学会（AASG）已经开始讨论建设全美高分辨率激光雷达数据库。我国正处于东部城市化、土地利用巨变、西部无图而经济高速发展的时期,国家、地方、企业生产单位迫切需要现实性强、精确度高、比例尺大的地形数据产品。满足这些要求的主要途径是采用激光雷达这一先进的测绘技术。我们建议国家、地方与企业统筹规划,各司其职,努力建设我国的激光雷达基础数据库。本文通过Stoker等（2008）介绍的第二届全美激光雷达战略研讨会上论述的激光雷达技术特点、激光雷达数据的科学需求与应用以及商业化运作问题,结合我国目前的激光雷达发展趋势、测绘数据需求以及土地利用变化监测等科学问题,简析激光雷达技术在我国的应用前景。     

土地利用基础图件更新技术体系研究与软件系统构建

全面、现势的土地利用基础图件是一个国家摸清其土地资源家底,进行土地资源合理利用、规划和科学管理的基础和前提条件。本文从数据源、处理手段与采用的技术方法对土地利用基础图件更新的技术体系进行了研究,基于图件更新技术流程的三个主要环节对图件更新方法进行了系统分析和分类总结,继而提出了一套集RS/GIS/GPS技术于一体的图件更新技术方法与流程;同时依托具有自主知识产权的遥感数据处理平台CASM Im-ageInfo,将整个作业流程一体化,构建了适合我国具体国情的实用和可操作性强的土地利用基础图件更新软件系统,实现了土地利用基础图件的快速更新。     

“3S”技术在四川生态环境动态监测中的应用研究

为有效实现四川省生态环境的动态监测,运用RS、GIS和GPS技术,以2004年中巴资源卫星(CBERS-02)遥感影像数据为信息源,2000年TM遥感影像解译的数据为基础,对2004年遥感影像进行解译,修改2000年数据库;手持GPS接收机,在野外对解译成果进行验证,更新数据库;利用GIS技术的空间分析功能,提取出2000～2004年期间土地利用/覆被变化信息,得到2000～2004年期间四川省高精度的土地利用/覆被变化数据库。最后对四川省土地利用/覆被变化信息进行分析,对四川省生态环境的下一步研究指名了方向。     

CA-AR模型在人口空间场属性变化模拟中的应用

本文结合CA(cellular automata)和AR(auto-regression)提出模拟人口空间场属性变化的CA-AR模型,以1991～2006年成都市各区、县市的人口统计数据和成都市行政区划图为基础,将行政单元转化为单元网格,分别建立成都市主城区各单元格的CA-AR模型。结果显示,模拟结果的绝对误差和相对误差都较小,模拟精度较高,模型的显著性水平都比较高,说明CA-AR模型用于模拟人口空间场的人口数量变化是可行的。     

基于MAPGIS的县级土地利用数据库建设及探讨——以大同市新荣区为例

本文体现了3S技术在县级土地更新调查中的重要性。重点介绍了在MAPGIS土地利用数据库系统中通过专题数据建立土地利用现状数据库,从内业判读,到外业调查,然后进行数据入库前的检查,分析数据的精度,入库后的相关处理和检查,最后建立新荣区1:1万土地利用数据库。通过建立的数据库,进行统计和汇总,输出各种专题图表,供土地部门进行合理规划和决策。