基于DEM的闽东南荔枝寒（冻）害精细化区划

应用逐步回归分析方法和GIS技术,构建福建省越冬期极端最低气温（Td）和4个等级冻害指标-2Td≤0℃,-3Td≤-2℃,-4Td≤-3℃, Td-4℃）发生频次空间分析模型,根据荔枝寒（冻）害评价指标,对闽东南荔枝种植区进行区划．结果表明：1）闽东南荔枝种植区可分为最适宜区（微寒害区）、适宜区（轻度寒害区）、中等适宜区（中度冻害区）、不适宜区（重度冻害区）,其中最适宜区、适宜区划区结果与实际荔枝种植分布较吻合;2）闽东南荔枝种植最适宜区主要分布在诏安至连江东南沿海平原,适宜区主要分布在沿海平原与东南丘陵过渡地区,中等适宜区、不适宜区主要分布在适宜区以西海拔较高地区。     

南海东部Z油田提液策略及智能注采优化

针对南海东部Z油田转注完善注采井网后,中高含水期油田主力层持续递减、提液井选取困难,提液疏导液流增油难度加大等问题,根据智能注采优化方法,形成最优提液策略。从地层能量、储层潜力、引流优化等角度逐一剖析,运用储层品质指数与无因次采液指数明确"内在高潜力提液井",利用基于支持向量代理辅助的粒子群算法(SVR-PSO)注采优化算法,以经济净现值(NPV)为优化目标建立优化模型,综合分析提出了中高含水期维持稳产的提液增油井优选策略。现场应用表明:实施提液增油策略后受效明显,主力层递减大幅缓解,改善了油田水驱开发效果。     

南海深部温压地层岩石可钻性评价及应用

南海珠江口盆地深部地层具有高应力也伴随有高温的特点,应用常温常压下的可钻性计算评价方法不能真实、准确反映该地区地层岩石可钻性特征。本文对取自南海珠江组地层的岩石样品开展了高温高压条件下的可钻性测试,对比分析了温压单因素及耦合作用下的差异性,建立了考虑温度和围压的可钻性级值计算模型,并通过ABAQUS软件建模,对温压条件下聚晶金刚石复合片钻头切削齿后倾角进行了优化分析。结果表明：温度在20℃~180℃时对岩石可钻性级值影响不大,高于180℃时,可钻性级值随温度增加有减小的趋势;围压条件下可钻性级值与常压下的级值存在差异,且高1~2级;温压下调整PDC钻头的后倾角到25°时钻头的破岩效率最高,应用井与已钻井相比机械钻速分别提高了31.71%、41.95%。本文所做的研究对于进一步认识高温高围压地层机械钻速低的原因、优化钻头切削齿参数、减少钻井周期,指导高温高围压地层钻井作业具有重要意义。     

The wavelet analysis of satellite sea surface temperature in the South China Sea and the Pacific Ocean

Using wavelet transform, the sea surface temperature (SST) during the period of 1982–1999 of the South China Sea and the equatorial Pacific, from datasets of NOAA/AVHRR, was analyzed. It is shown that there are 4- and 8-year interannual oscillations in the eastern equatorial Pacific and 8-year interannual oscillation in the western equatorial Pacific. In terms of attractive time-frequency localization and multi-scale properties of wavelet transform, as shown by the Morlet wavelet, it is found that an in-phase coupling oscillation occurs between the SCS and the equatorial Pacific. The SST changes of SCS will have echoed every event of EI Niño (abnormally warm) and La Niño (abnormally cold) in the equatorial Pacific. There is a positive correlation between the SCS and the western equatorial Pacific in the 8-year time-scale. Evidence is presented that the SST anomalies of the equatorial Pacific influence the SST of the SCS.     

The age of the "old red sand" on the coasts of south Fujian and west Guangdong, China

The sedimentary strata and deposition ages of the "old red sand" distributed along the coasts of south Fujian and west Guangdong are determined by lithostratigraphy, magnetic stratigraphy and earth chemistry combined with TL, ESR and 14C-dating techniques. The research shows that the "old red sand" was aeolian sediments deposited from 55 400 to 9 000 aBP, the last glacial period in the middle and later age of Late Pleistocene. Most of them deposited in two periods of 56-42 ka and 30-10 ka. The "old red sand" deposited in the period of 30-10 ka, the later Würm glacier substage (Q33), developed on the largest scale with the widest distribution.     

Genesis of excess argon in phengite and significance of 40Ar-39Ar age spectra for omphacite: A case study on UHP eclogite of South Dabie Terrain, China

The Ar-Ar dating of phengite and omphacite in ultrahigh-pressure (UHP) eclogite of Bixiling and Hengchong in the South Dabie Terrain shows that the content range of excess argon is as high as (0.4-1.3)×10-8 mol.>g-1. The genesis of the excess argon is discussed. The Ar-Ar age spectra of omphacite could not support the opinion that the UHP metamorphism occurred in Caledon epoch and pre-Caledon epoch.     

闽东南特色农业开发带的诊断与设计

基于闽东南地区自然,社会,经济条件,期待建立特色农业开发带,提出建立生态果园,良性循环的农业生产系统和特色农业决策支持系统。     

一个被错误鉴定的苏铁名称——华南苏铁

<正>Cycasrumphii长期被误认为是中国华南地区常见分布或广泛培栽的苏铁种类 ,中名称之“华南苏铁”。作者研究表明 ,C .rumphii在我国大陆并不分布 ,而且栽培稀少 ,而所谓的“华南苏铁”属错误鉴定 ,实际是指台湾苏铁 (C .taiwaniana)、仙湖苏铁 (C .fairylakea)与四川苏铁 (C .szechuanensis)等一类苏铁。“华南苏铁”一名应予以废弃 ,而恢复C .rumphii的中文名刺叶苏铁。     

民族共助意识下的朝韩经济交流与合作

冷战结束以后,韩国政府超越冷战意识的民族统一、民族至上意识开始逐年上升,2000年朝韩首脑首次历史性会晤标志着这种意识进入了一个新的高峰,韩国的对朝政策也相继由民族和解的"北方政策"阶段进入了不计代价、更具民族共助色彩的"阳光政策"和"和平繁荣政策"阶段.南北经济交流合作也由此进入政府主导的发展时期.但是,这种政治因素影响下的非市场化运作是否可持续还是疑问.     

信息化途径的大德古村落水系遗产再生

综合应用计算机网站技术及其他多媒体描述方法,对闽西大德古村落水系遗产信息资源进行采集与存储、加工与编辑、传播与订制3个环节的实验过程研究与操作.研究结果表明:该方法可以让村落水系遗产这种特殊的信息资源有效地实现从历史存在到当代再生的转化,进而较好地服务社会.