机载三维成像系统

本文简要地阐述了新型机载三维成像系统的产生环境、原理、技术结构、特色及应用领域 ,介绍了飞行检测、应用飞行所取得的成果。为实现高效遥感对地观测体系迈出的第一步。     

Notes Ecological study of macrobenthos in Fuqing Bay

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南黄海自生黄铁矿成因及其环境指示意义

样品为１９８９年采自南黄海，利用显微镜，电子显微镜，电子探针和化学分析方法，对自生黄铁矿的形态，成份和同位素特征进行研究，在此基础上就其成因与形成环境的关系进行初步探讨。研究结果表明，自生黄铁矿集合体形态可以分为聚莓，单莓和细粒３种，霉体特征的形态是早期成岩作用阶段沉积物随机堆积的结果，可以作了沉积成因黄铁矿的形态标型黄铁矿微量成份特征显示其沉积成因，同时亦表现对泥质沉积物地球化学背景值的继承性，     

北黄海沉积物中重金属分布及环境背景值

本文讨论了北黄海１１个柱状岩芯样的颗粒物（＜０．０６３ｍｍ）中重金属的分布，采用统计学方法对Ｃｕ，Ｐｈ，Ｚｎ和Ｃｄ进行态性检验，用柱样稳定段（拐点以下）作为背景段，获得重金属环境背景值．     

Effect of rain enrichment on soil respiration of Nitraria sphaerocarpa community in a hyperarid area

In order to analyze the effect of rain enrichment on soil respiration rate of a Nitraria sphaerocarpa community, we measured soil respiration rate in bare and vegetated areas in a hyperarid area （Dunhuang） during the growing season. Results show that rain enrichment can increase bare and vegetated soil respiration rates. The more rainfall enrichment, the greater the increment and the longer duration time effect for soil respiration rate. 200% （16 mm） and 300% （24 mm） of rain enrichment can significantly increase bare soil respiration rates by 90% and 106% （P〈0.01）, respectively. By contrast, areas with 100% （8 mm）, 200% （16 mm） and 300% （24 mm） of rain enrichment can significantly increase shrub area respiration rates by 68%, 157% and 205% （P〈0.01）, respectively. The response time of bare and vegetated soil respiration to rainfall enrichment is asynchronous. Response variable of soil respiration in vegetated soil is higher （118%） than in bare soil. There was significant positive correlation between soil respiration rate and soil water content during the growing season （P〈0.01）. For every 1 mm increment of precipitation, soil respiration rate increased by 0.01 and 0.04 pmol/（m2.s）, respectively in vegetated and bare soils.     

四川盆地西北部中二叠统栖霞组白云岩特征及成因探讨

白云岩特征及其形成机制的研究对白云岩化理论与白云岩储集层勘探具有重要意义。本文以四川盆地西北部中二叠统栖霞组白云岩为研究对象,通过野外剖面及岩心观察并采用铸体薄片、阴极发光、地球化学分析等方法对该段白云岩特征及成因进行研究。结果表明川西北地区栖霞组白云岩主要表现为块状晶粒白云岩、角砾状白云岩及斑状白云岩3种类型;碳同位素为正低值,氧同位素为负值,反映出其成岩过程中伴有早期淡水参与。结合工区构造沉积背景,对比以往经典白云岩化模式,发现四川盆地西北部中二叠统栖霞组白云岩化成因模式具有一定自身特点。通过对Folk “镁笼效应”理论进行延伸,认为栖霞组白云岩化模式在纵向上分为淡水渗流带、混合渗流带、混合潜流带及海水潜流带4个区带,其中混合渗流带和混合潜流带是白云岩发育的主要位置。在混合渗流带中,淡水与海水交替进入,未完全成岩的海洋沉积物质在成岩过程中受到淡水冲洗导致大量镁离子随淡水流入下部地层,而后又有海水携带镁离子进行补给,这为白云石形成提供了有利条件;混合潜流带内不断进入的混合流体携大量镁离子使得该带具有较高Mg/Ca值;而地幔上涌造成的地温升高克服了白云石形成的动力学屏障,有效促进了白云岩的形成。     

东昆仑西大滩盆地晚新生代构造地貌简析

东昆仑山脉的南缘,发育一条巨型的以左行走滑为主的活动断裂带,其中西大滩左行走滑断裂是东昆仑断裂带的一部分,控制着西大滩盆地的构造地貌演化。本研究在野外调查了西大滩盆地内部和盆地边缘的活动断裂,测量了这些断层的几何学参数,并对其运动学进行了研究。研究认为,晚新生代以来西大滩盆地中心发育有西大滩左行走滑断裂,而在盆地南北两侧则发育有伸展变形,存在一系列活动的高角度脆性正断层,可见清晰的断层三角面构成盆地南北两侧的山坡。这些正断层呈阶梯状产出,向盆地内部倾斜,与盆地中心的左行走滑断裂一起,在剖面上构成负花状构造,证明西大滩盆地发生了张扭性变形。走滑断裂的走滑运动往往伴随构造转换现象,在断裂弯曲或侧接部位可以形成走滑拉分盆地。西大滩盆地从其盆地形态来看,是一个狭长的张扭性盆地,盆地长宽比值约为7.5~30.0之间,大于7︰ 1,不符合典型的走滑拉分盆地的特征;控制西大滩盆地的西大滩走滑断裂并未见明显的弯曲,从而排除盆地的走滑拉分成因。本文认为西大滩盆地的形成与西大滩断裂本身的张扭性变形直接相关,反映了该地区区域上处于张扭性而非压扭性应变状态,其成因与上地壳刚性变形和下地壳塑性流变密切相关;西大滩地区构造地貌的演化受控于晚新生代以来青藏高原下地壳通道流(channel flow)的活动。结合前人的研究成果认为东昆仑活动断裂带晚期的张扭性活动可能起始于至少7Ma B.P.以前或10±2Ma B.P.,且在昆仑山垭口盆地断陷形成时期(3.6Ma B.P.)活动更加强烈,在0.6Ma B.P.的"昆仑-黄河运动"时期可能达到顶峰,奠定了东昆仑西大滩地区现今的构造地貌格局。     

Interrelations between socio-economic development and environmental quality: a simulation integrating system dynamics models with GIS

System dynamics (SD) theory has long been deployed in modeling complex non-linear interrelationships but, so far it has not been common to do the kind of modeling in support of bringing environmental sustainability policies to practice. This is largely because the challenge of including spatial data has not yet been well met. Potential for adoption of SD and GIS methods in combination is exemplified with the results of a decision-support exercise designed for simulation and prediction of the dynamic inter-relationships between socio-economic development and environmental quality for the “Wen, Pi, Du” county in Sichuan province, southwestern China.     

地球化学方法在麻林桥低温热水勘查中的应用

应用地球化学方法是地热、温泉勘查中广泛采用的有效手段之一。以麻林桥低温热水为例，说明土壤中的汞、砷、硼微量元素的富集规律，这些微量元素对寻找地下导热构造有明显的指示作用。     

The Hybrid Nature of 0846＋51W1： a BL Lac Object with a Narrow Line Seyfert 1 Nucleus

We found a NLS1 nucleus in the extensively studied eruptive BL Lac object, 0846+51W1, out of a large sample of NLS1s compiled from the spectroscopic dataset of SDSS DR1. Its optical spectrum can be well decomposed into three components: a power law component from the relativistic jet, a stellar component from the host galaxy, and a component from a typical NLS1 nucleus. The emission line properties of 0846+51W1, FWHM