广西防城港市旅游气候资源评价及其利用

气候资源是旅游业开发中十分重要的资源之一,通过分析防城港市旅游资源和气候资源,并对其优势和人体舒适度进行了综合评价,指出防城港市具有旅游资源丰富、地理气候特征显著、适宜旅游时间长等优势;同时从舒适度分析得出,本市秋冬季节温暖舒适,是避冬的好地方,夏季高温时间少,是避暑的圣地。据此提出充分利用本地的旅游气候资源,打造本市旅游精品,开发以秋冬季为主的度假游,充分利用沿海的天然浴场,创建十万大山国家森林公园生态环保天然疗养院,做强做大防城港市旅游产业。     

湖南省桂东县自然资源特征及其可持续发展研究

湖南省桂东县处于边远山区,经济发展水平低,为国家级贫困县。但其自然资源丰富,生态环境质量良好,旅游资源独具特色。通过对边远山区县资源环境特点和经济发展现状的分析,提出了促进地区可持续发展的建议:调整产业结构,在发展超级稻和优质稻基础上,发展具有地方特色的药、菜、茶、果、烟,外加楠竹和园艺的种植业,发展以牛、羊等草食性牲畜为主的养殖业;发展小水电和以电力为基础的电化工业及农产品加工业;发展红色旅游和休闲度假相结合的生态旅游业;加强生态环境保护力度,以促进桂东区域经济的可持续发展。     

山东省地下水超采漏斗发展演变分析

地下水超采漏斗是山东省平原区最为突出的环境问题.根据多年来地下水动态监测资料,简要分析了山东省平原区浅层地下水超采漏斗的发展过程、发展演变特征及发展原因,旨在为山东省地下水合理开发、有效保护、科学管理及有效控制地下水超采提供依据.     

注水开发过程中原油的水洗作用初探

注水开发过程中的水洗作用是一个以往被忽略,但又十分重要的问题.通过对3口井、时间间隔为20年的6个原油样品系统的地球化学测试与对比研究,探讨了注水开发过程中水洗作用对原油的改造作用以及各种地球化学参数的变化特征和规律.结果表明,在注水开发过程中,水洗作用对芳烃的影响远大于饱和烃,主要表现在芳烃组分的含量明显降低,一些芳烃类化合物的含量和芳烃参数也发生了显著的变化.认为这些变化是注水开发过程中原油遭受水洗作用的特征性标志,并对油源对比和油气运移等研究具有参考意义.     

瞬态瑞雷面波法在公路工程地质勘察中的应用

结合安徽省高速公路建设工程实例,介绍瞬态瑞雷面波勘探技术在公路工程地质勘察中的应用,解决沿线高边坡、深路堑、桥梁、隧道进出口的岩土分层,给出基岩风化分带等工程地质问题,省时、省力,取得了良好的经济效益和环境效益.     

新疆阿尔泰山南缘产于麦兹泥盆纪火山-沉积盆地铅锌矿床稳定同位素特征

麦兹火山-沉积盆地内铅锌矿呈似层状、透镜状,矿石构造以条纹条带状、块状、斑杂状为主,矿物成分相对简单,矿体直接容矿围岩为火山-沉积岩.矿床δ34S值为-20.6‰～-10‰;矿床石英流体包裹体水的δD值为-89.1‰～-49.48‰,δ18OSMOW值为4.7‰～1.2‰.矿化层中方解石的δ13C值介于-6.7‰～-14.3‰之间,δ18O值在10.3‰～12.9‰之间.矿床属火山-沉积岩容矿的块状硫化物矿床,介于典型的火山岩容矿的块状硫化物型矿床(VHMS)和典型沉积岩容矿的硫化物矿床(SEDEX型)之间的过渡类型(一种新类型块状硫化物矿床).     

The deep-lake deposit in the Upper Triassic Yanchang Formation in Ordos Basin, China and its significance for oil-gas accumulation

The deep-lake facies of the Yanchang Formation represents a large outflowing lake basin in the Ordos area. Its deposition can be divided into four stages lake genetic and expanding stage, peak stage, inversion stage and dying stage. All the stages are obviously consistent with the evolution of depositional environment and the paleoclimate in the region. The study indicates that the lake basin has evolution fluctuations from highstand to lowstand for four times in its evolution history, and the deposition center of the lake has not obviously moved, staying along the Huachi-Yijun belt. The deep lake sedimentary system mainly consists of deep water deltas and turbidite fans during the entire evolution course of the lake basin in the Late Triassic. The former mainly developed on the slope of steep shore of the delta in the early period of the deep-water expansion and gradually experienced a big shift from deep-water deltas to shallow-water platform delta. And the latter appeared almost in all the above stages and had two types of turbidite fans, slope-moving turbidite fans and slump turbidite fans. The slope-moving turbidite fans have relatively complete facies belts overlapping one another vertically and consist of the slope channel of inter fans, the turbidite channel, inter turbidite channel and turbidite channel front of middle fans and outer fans (or lakebottom plain). However, the slide-moving turbidity fans are formed in the deep lake with their microfacies difficult to be distinguished, and only the center microfacies and edge microfacies can be determined. The two types of the turbidity fans are similarly distributing in the near-root-slope and far-root-slope regions. The deep-lake deposition governs the distribution of the hydrocarbon and reservoir, while the slope-moving turbidite fans are excellent reservoirs for oil-gas exploration due to their great thickness, widespread distribution and accumulation properties.     

Zircon SHRIMP U-Pb ages and trace element geochemistry of the Kuhai gabbro and the Dur''''ngoi diorite in the southern east Kunlun tectonic belt, Qinghai, Western China and their geological implications

Timing of the intermediate-basic igneous rocks developed in the area of Kuhai-A'nyêmaqên along the southern east Kunlun tectonic belt is a controversial issue. This paper presents new zircon SHRIMP U-Pb dating data for igneous zircons from the Kuhai gabbro and the Dur'ngoi diorite in the Kuhai-A'nyemaqen tectonic belt, which are 555±9 Ma and 493±6 Ma, respectively. The trace element geochemical features of the Kuhai gabbro and the Dur'ngoi diorite are similar to those of ocean island basalts (OIB) and island arc basalts (IAB), respectively. Thus, the Kuhai gabbro with the age of 555±9 Ma and OIB geochemical features is similar to the Yushigou oceanic ophiolite in the North Qilian orogen, whereas the Dur'ngoi diorite with the age of 493±6 Ma and IAB geochemical features is similar to the island arc volcanic rocks developed in the north Qaidam. The Late Neoproterozoic to Early Ordovician ophiolite complex in the area of Kuhai-A'nyêmaqên suggests that the southern margin of the "Qilian-Qaidam-Kunlun" archipelagic ocean in this period was located in the southern east Kunlun tectonic belt. Therefore, the southern east Kunlun tectonic belt in the early Paleozoic is not comparable to the Mianlüe tectonic belt in the Qinling orogenic belt.     

1991年夏季长江中下游降水和风场的低频振荡特征分析

对 1 991长江中下游地区夏季降水和风场进行 Morlet小波分析 ,结果表明 :这些要素有明显的低频特征 ,其变化具有阶段性的特点。 6月中旬之前主要表现为准双周振荡 ,6月中旬之后 3 0～ 60 d振荡逐渐明显 ;低频西风峰值超前降水峰值 2～ 4d。通过对散度场及流场的分析发现 ,7月份以后 ,低纬低频系统北传 ,同时中纬 40～50°N低频系统南传 ,两者交汇在 3 0～ 3 5°N,低频气流在长江中下游地区的辐合造成了两次大的降水过程     

HD-STGPS超站仪数据通信的实现

介绍了HD－STGPS超站仪的数据电台和GSM两种数据通信的设计，讨论了GPS数据通信的协议和程序实现方法。