首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 250 毫秒
1.
X1422007042915长江口沙洲表层沉积物磷的赋存形态及生物有效性=Species and bioavailability of phosphorus in surface sedi mentsfromthe shoals in the Yangtze Estuary/侯立军,陆健健…∥环境科学学报.—2006,26(3).—488~494利用磷的连续分级提取方法,研究了长江口沙洲沉  相似文献   

2.
海洋地貌     
P534.63,P736.212007042996江苏中部海岸全新世中期温暖期风暴潮频率的研究=Re-searches on coastal stormsurgefrequency duringthe warmperi-od of middle Holocene in central Jiangsu province in China/柏春广,王建…∥海洋学报.—2006,28(6).—78~85通过对采集于江苏省盐  相似文献   

3.
Using the Global Energy and Water Cycle Experiment—Asian Monsoon—Tibet Plateau Experiment (GAME-Tibet) observational data—from October 2002 through September 2003—of Gaize in the western Qinghai-Xizang Plateau (QXP), the land-surface characteristics of the Qinghai-Xizang Plateau are simulated by the improved land-surface model Common Land Model (CoLM). The results show that CoLM can reproduce the land-surface characteristics of plateau areas well. In the surface-energy balance of the western QXP in the winter half year, the sensible heat (SH) flux constituted the dominant energy, and the latent heat (LH, here and after) flux is very small. Although the LH flux nearly equals zero in freezing season, it cannot be ignored during the period of freezing–thawing in QXP. In the transition season from mid- to late-May, the frequent phase change of soil water that is caused by the freezing–thawing process leads to the increase of LH flux and decrease of the Bowen ratio. The simulation results also indicate that the changes of surface effective heat fluxes (SH and LH flux) are associated with precipitation and the frequent change between freezing and thawing processes in soil surface.  相似文献   

4.
城市地理     
F291 2007021422南昌地域城市群的发育与发展思路=Growth and develop- ment strategy for regional urban agglomeration in Nanchang city/朱俊成,郑林//长江流域资源与环境.—2006,15 (6).—685~690表5参8(宋金叶) HN F291.1 2007021423长江三角洲城市群发展研究=Development of urban agglom- eration in the Yangtze River Delta/顾朝林,张敏…//长江流域资源与环境.—2006,15(6).—771~774对长江三角洲城市群格局演变过程进行分析,找出长江三角洲城市群发展中存在的问题,提出:长江三角洲城镇  相似文献   

5.
海洋水文     
P7312006010080粤西水东单点系泊海域潮流和低频流特征=The character-istics of low frequency currents in the area of Shuidong an-chored floating whelf in the west of Guangdong coastal waters/严金辉,陈达森∥海洋湖沼通报.—2005(3).—8~15图4表2参6(许桂红)NX8242006010081长江口及其邻近海域悬浮物浓度和浊度的对应关系=Cor-responding relationship betweensuspended matter concentrationand turbidity on Changjiang estuary and adjacent sea area/翟世奎,张怀静…∥环境科学学报.—2005,25(5).—693~699根据该次调查…  相似文献   

6.
P343.62007010170塔里木盆地南缘喀拉米兰河-克里雅河流内流区近30a来的冰川变化研究=Glaciers fluctuations in the Karamilan-Keriya river watershed in the past 30 years/许君利,刘时银…∥冰川冻土.—2006,28(3).—312~318对1999年的喀拉米兰河-克里雅河流区的Landsat ET  相似文献   

7.
P732 2007020977冬季北大西洋海温年际、年代际变化与中国气温的关系= Relation between interannual,interdecadal variability of SST in North Atlantic in winter and air temperature in China/曲金华,江志红…//地理科学.—2006,26(5).—557~563利用NCEP/NCAR月平均再分析资料海洋表面月平均温度资料、500hPa月平均高度场以及中国160站月平均气  相似文献   

8.
S161.212007010061黑河中游间作灌溉农田的能量平衡=Energy balance in the irrigational intercropping field in the middle reaches of Heiheriver/吴锦奎,丁永建…∥冰川冻土.—2006,28(3).—443~449研究结果表明:间作作物-土壤系统截获的太阳短波辐射占太阳总辐射的比例从  相似文献   

9.
P3312007010669中国西北内陆河水问题及其应对策略:以黑河流域为例=Water issue and its countermeasure in the inland river basins of Northwest China:a case study in Heihe river basin/程国栋,肖洪浪…∥冰川冻土.—2006,28(3).—406~413以黑河为例论述了流域尺度的水、  相似文献   

10.
正The workshop on the innovative development of Sciences in Cold and Arid Regions(SCAR)was successfully held on October 14,2017 in Lanzhou Library of Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences.Academician Guodong Cheng—Editors-in-chief of SCAR—hosted the meeting,more than 20 experts from Lanzhou University,Northwest Normal University and Northwest Institute of Eco-Environment and Resources attended this conference.  相似文献   

11.
农业地理     
S8-1.732007010375贵州治理石漠化发展生态畜牧业探索之路=Probe into the route of controlling rock desertification,developing ecological animal husbandry in Guizhou/张自和∥草业科学.—2006,23(8).—63~67参6(姚则安)BeF323.12007010376过去50年吉林省玉米带玉米种植  相似文献   

12.
农业地理     
F319.92007043217吉林省玉米产业发展可持续能力评价研究=Sustainabilityassessment of maize industry development in Jilin province/龙振永,汤洁…∥地理科学.—2007,27(2).—167~172图3表3参16(盛春蕾)ChaF3272007043218中国东部沿海地区乡村转型发展与新农村建设=Ruraltr  相似文献   

13.
F127 2007021310中部地区区域经济发展的极化分析=Analysis of polarization in economic development in central region of China/刘耀彬,陈志//长江流域资源与环境.—2006,15(6).—679~683对中部地区区域经济发展的极化机制和空间极化差异进行分析,研究结果显示:中部地区区域经济发展的极化机制在于经济发展成果、经济投入和城市化发展,它们对区域  相似文献   

14.
S792.112006010041毛乌素沙地杨树年轮结构对气候因子的响应=Response oftree-ring structure of poplar to cli mate factors in the Mu UsDesert/黄荣凤,古川郁夫…∥北京林业大学学报.—2005,27(3).—24~29图3表2参16(姚则安)BeP463.222006010042中国东北森林气象因子与NDVI  相似文献   

15.
P642.142007010180多年冻土区管道通风路基温度边界条件及温度场实测研究=Experimental study on the thermal boundary conditions and temperature fields of duct-ventilated embankment in permafrost regions/牛富俊,程国栋…∥冰川冻土.—2006,28(3).—380~389基于青藏铁  相似文献   

16.
遥感的应用     
F323.22006010877三峡地区主要地类的自动提取方法研究=Explorations onmethod of auto-classification for the main types of ground ob-jects in the Three-Gorge region/张宝雷,周万村…∥长江流域资源与环境.—2005,14(4).—445~449图2表2参7(宋金叶)HNK928.72006010878文  相似文献   

17.
P339.92007042885影响阿克苏河年径流量变化的前期大气环流指数因子研究=The elements of the prophase atmospheric indexes whichin-fluence the annual runoff in the Aksu River/毛炜峄,王铁…∥冰川冻土.—2007,29(2).—242~249图4表4参30(洪明)BiP468.5,P463.32007042886  相似文献   

18.
F1272007010343东南沿海经济发达地区发展趋势与问题=Development trend and existing problems of the developed areas in the south-east coast of China/唐琦,虞孝感∥长江流域资源与环境.—2006,15(5).—650~653表3参7(宋金叶)HNK901.62007010344中国互联网区域差异的时空  相似文献   

19.
This paper presents various deformation-monitoring technologies employed to monitor the frost heave and thaw settlement of two mounds along the Qinghai–Tibet Engineering Corridor(QTEC), China. The QTEC is known as a critical infrastructure and passage connecting inland China and the Qinghai–Tibet Plateau(QTP). Three technologies—global navigation satellite system(GNSS), terrestrial laser scanning(TLS), and unmanned aerial vehicle(UAV)—were used to estimate the freeze/thaw–induced 3D surface deformation of two frost mounds. Our results showed that (1) the two frost mounds exhibited mainly thaw settlement in thawing periods and frost heave in the freezing period, but frost heave dominated after repeated freeze–thaw cycles;(2) different zones of the mounds showed different deformation characteristics;(3) active-layer thickness(ALT) and elevation changes were highly correlated during thaw periods;(4) integrated 3D-measurement technologies can achieve a better understanding and assessment of hazards in the permafrost area.  相似文献   

20.
气候资源     
P339 2007021039塔里木河流域气候与径流变化及生态修复=Changes of cli- mate and runoff in Tarim River Basin and ecosystem restoration in the lower reaches of Tarim River/邓铭江//冰川冻土.—2006,28(5).—694~702从20世纪90年代中期开始,塔里木河流域气温上升,降水增加,开都河等主要河流几乎同步进入持续的丰水周期时段,为塔里木流域生态修复创造绝好的“天时”和历史  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号