【摘 要】
:
Site selection for the research stations is an important and necessary issue for Antarctic expedition, affecting both scientific investigation and service life of the stations.This study was conducted
论文部分内容阅读
Site selection for the research stations is an important and necessary issue for Antarctic expedition, affecting both scientific investigation and service life of the stations.This study was conducted to identify suitable sites for Antarctic research stations, using geographical information systems (GIS) combined with fuzzy analytical hierarchy process (FAHP).Due to the extraordinary nature of Antarctic environment, the selection of the optimal site requires consideration of multiple evaluation criteria.Based on actual conditions of the study area, fifteen criteria, grouped into four main criteria: scientific interest, environment, accessibility and topography, were considered and calculated weights using the FAHP in GIS capabilities.Fuzzy hierarchy models were build for solving the station site selection problems.All maps are scored from 1 (not suitable) to 3 (most suitable) using spatial information technologies.The raster-GIS models were developed by aggregating the graded maps based on the criteria weights.Most suitable sites were generated from the model and the candidate site for Chinese 4th Antarctic research station was suggested.This work offers a siting methodology and provides essential support for decision-makers in the assessment of Antarctic station building problems for China as well as other countries.
其他文献
A series of interesting marine invertebrates, such as sponge and sea urchin were collected off the coast of King Geroge Island, Great Wall Station, China.In our preliminary studies on the chemical con
脆杆藻(Fragilariopsis_cf sp.)、微单胞藻(Micromonas sp.)、四棘藻(Attheya septentrionalis)、海链藻(Thalassiosira sp.)和小球藻为(Chlorella sp.)北极海域常见优势微藻.为了解这五种优势微藻藻际细菌多样性,对五种微藻不同生长时期粘附和游离细菌16S rRNA基因进行PCR-DGGE(Denaturing Gr
本文以从南极土样中筛选出的产低温纤维素酶真菌QP7为出发菌株,分别对其进行了N+离子束和紫外线诱变,经筛选得到1株产纤维素酶高效菌株QP7-37,在相同培养条件下,诱变菌株QP7-37发酵液FPA酶活较出发菌株提高了65.6%,且遗传稳定性较好.并对其培养条件及部分酶学性质进行了优化.将优化后的QP7-37所产低温酶,在玉米秸秆及浒苔等来源不同的生物质中分别进行了同步糖化发酵产乙醇的初步应用尝试.
结合中国第28次南极科学考察南大洋考察任务与计划安排,使用"雪龙"号船载SIMRAD EK500科学鱼探仪对南极半岛西部海域进行了南极磷虾资源走航声学调查,并结合拖网采样,开展了南极磷虾资源量评估.结果表明:在6.11×105 km2调查海域范围内,南极磷虾平均密度33.70 g/m2 (69.95 fish/m2),总资源量为2.06×107 t(4.27×1013 fish).其中以60.5°
Seabirds have substantial influence on geochemical circulation of elements, serving as a link for substance exchange between their foraging area and colonies.In this study, we investigated the element
This study surveyed dimethylsulfide, dissolved and particulate dimethylsulfoniopropionate concentrations in the surface water of the Berling Sea and Chukchi Sea during the summer of 2012.The Surface w
北极高纬度地区是全球重要的海鸟活动区,海鸟粪为苔原土壤带来了丰富的养分,影响了苔原碳循环过程,但目前还未见有文献报道海鸟活动对北极苔原CO2通量的影响.2008和2009年夏笔者采用密闭箱法对北极新奥尔松地区(Ny-(A)lesund)鸟类保护区、海滩苔原、矿区、站区、伦敦岛、王湾洋面以及机场等区域的CO2、 CH4和N2O的近地面浓度时空变化进行了对比监测,判断这些区域对大气温室气体源汇的影响,
多环芳烃(Polycyclic aromatic hydrocarbons,PAHs)是一类典型的持久性有毒物质(Persistent Toxic Substances,PTS),具有半挥发性和长距离迁移性,在"全球蒸馏"效应(即"蚱蜢跳"效应)的作用下,极地成为持久性有毒物质污染的敏感地区,因此,在没有明显PTS污染源的情况下,极地地区仍然受到了一定程度的PTS污染。本研究考察了南极菲尔德斯半岛
冷战结束之后,北极不再是美俄对峙的前沿。而随着全球气候变暖,北极地区的冰盖加速融化,北极军事,航运、能源潜力得以凸现,目前的北极又再次成为了各国的利益争夺点。加拿大是北极地区最重要的国家之一,它拥有世界上最长的海岸线,且大部分位于北极地区。本文通过对加拿大北极争端的历史回顾,总结其成败得失的经验教训,分析加拿大北极争端的现状、趋势与前景,试图说明,一个边界明确、稳定、有序的北极地区,才符合加拿大的
极区海洋生态环境系统在全球生物地球化学循环中的具有特殊作用,因此已成为重大国际计划中的重点研究区域。在普里兹湾建立生物地球化学潜标观测系统,在中层以及深层水体中利用锚定式时间序列沉积物捕获器收集水体中沉降颗粒物,综合研究观测海域颗粒物质的来源、组成、时空变化及控制因素,获取生源物质垂直输运过程以及通量的季节性信息,为揭示南大洋海冰区碳源/汇格局,认识全球变化影响下的极区海洋环境变化及其生物地球化学