CO_2地质储存潜力与适宜性评价编图方法研究          下载免费PDF全文

范基姣  张森琦  郑宝锋  金晓琳 《水文地质工程地质》2011,38(4):101-105

借鉴国外CO2地质储存潜力与适宜性调查评价工作程序,将我国CO2地质储存潜力与适宜性评价工作划分为五个阶段。影响盆地评价阶段CO2地质储存适宜性的因素很多,本文分别从盆地本身物理条件、数据源和资源潜力、地壳稳定性、温度以及经济适宜性五个影响方面形成单因子图,此五类单因子图件的编图基础为中国1∶500万地质图,利用图层属性的加权计算、叠加的成图方法,综合单因子图件形成我国CO2地质储存远景区划图件。  相似文献   

Habitat suitability modelling as a mapping tool for macrobenthic communities: An example from the Belgian part of the North Sea     

S. Degraer  E. Verfaillie  W. Willems  E. Adriaens  M. Vincx  V. Van Lancker 《Continental Shelf Research》2008

Being ecologically important and well-known, the spatial distribution pattern of the macrobenthos is often used to support an ecologically sustainable marine management. Though in many cases the macrobenthic spatial distribution is relatively well-known, this information is merely restricted to point observations at the sampling stations: although being increasingly demanded, full coverage spatial distribution maps are generally lacking. This study therefore aimed at demonstrating the usefulness of habitat suitability modelling as a full coverage mapping tool with high relevance for marine management through (1) the construction of a habitat suitability model for the soft sediment macrobenthic communities in the Belgian part of the North Sea (BPNS) and (2) predicting the full coverage spatial distribution of macrobenthic communities within the BPNS. The BPNS was selected as a case study area because of the high data availability on both macrobenthos and environmental characteristics. Discriminant function analysis (DFA) objectively selected median grain size and sediment mud content and omitted bathymetry, slope and distance to the coast to represent the most important environmental variables determining the macrobenthic community distribution. The consequent crossvalidated, empirical habitat suitability model, using both median grain size and mud content, showed an a posteriori average correctly classified instances (CCI) of 79% (community-dependent CCI ranging from 72% to 86%) and a Cohen's kappa of 0.71, pointing towards a very good agreement between model predictions and observations. The application of the habitat suitability model on the full coverage maps of median grain size and sediment mud content, taken from literature, allowed to reliably assess the distribution of the macrobenthic communities within 96.3% of the 53,297 BPNS grid cells with a resolution of 250 m. Next to its applicability to the BPNS, the model is further anticipated to potentially perform well in the full Southern Bight of the North Sea: testing is advised here. Since the habitat suitability is considered far more stable through time compared to the permanently fluctuating macrobenthic communities, information on the habitat suitability of an area is considered highly important for a scientifically sound marine management.  相似文献   

江西省萍乡市矿产资源开发利用适宜性     

王淼林 《华南地质与矿产》2019,35(2):238-243

科学评价矿产资源是合理利用矿产资源的前提与基础。本文以江西省萍乡市为样本,进行矿产资源开发利用适宜性指数计算,划分出区内的重点矿产、优势矿产、保护性开发矿产、限制性开发矿产。评价具有科学合理性和可操作性,可作为矿产资源开发利用、规划管理的依据。  相似文献   

农村居民点土地整理潜力研究方法述评   总被引：24，自引：1，他引：23  

何英彬  陈佑启  姚艳敏  魏娜  许新国  唐鹏钦  余强毅 《地理与地理信息科学》2008,24(4)

结合我国农村居民点土地整理潜力研究现状,将农村居民点土地整理研究归纳为综合潜力评价与农村居民点土地整理潜力计算方法两项主要研究内容;评述政策指标测算法、闲置宅基地抽样调查法和建筑容积率法3种农村居民点土地整理潜力计算方法,并探讨农村居民点土地整理潜力理论缺乏系统性、综合潜力研究中土地整理适宜性评价与综合潜力评价重叠及农村居民点土地整理潜力计算方法尚不完善等问题;提出农村居民点土地整理潜力研究应与耕地整理等其他土地整理领域相结合,使农村居民点土地整理潜力计算方法更系统、更精确。  相似文献   

唐山市土地利用防灾适宜度评价方法分析     

朱庆杰  陈艳华  周云章  丛德茂 《地理与地理信息科学》2008,24(3):90-95

基于GIS的防灾适宜度多准则评价(MCE)是土地利用防灾规划的关键。根据唐山市地质灾害资料,建立基于距离的防灾适宜度评价准则并量化评价指标。依据决策风险指标计算次序权重,应用层次分析程序(AHP)构建比较矩阵并计算准则权重,分析基于GIS的OWA方法、布尔决策和权重线性叠加(WLC)等多准则评价方法的决策风险,确定唐山市土地利用防灾评价策略。基于决策风险和指标补偿原则计算次序权重、准则权重和一致性比率,得到唐山市土地利用防灾适宜度评价结果,据此提出唐山市土地资源合理利用建议。  相似文献   

Effect of streambed sediment on benthic ecology   总被引：5，自引：2，他引：3  

Xuehua DUAN  Zhao-Yin WANG  Mengzhen XU  Kang ZHANG Ph.D.  Jiangyin Environmental Monitoring Station  Jiangyin  China  Dept. of Hydraulic Engineering  Tsinghua University  Prof.  State Key Laboratory of Hydroscience  Engineering  Beijing  Doctoral c  idate  Doctoral c  idate  Be... 《国际泥沙研究》2009,24(3):325-338

Benthic macroinvertebrates have been commonly used as indicator species for assessment of aquatic ecology. Streambed sediment, or substrate, plays an important role in habitat conditions for macroinvertebrate communities. Field investigations were done to study the benthic diversity and macroinvertebrate compositions in various stream substrata. Sampling sites with different bed sediment, latitude, and climate were selected along the Yangtze River, the Yellow River, the East River, and the Juma River, in China. The results show that benthic community structures found in different substrata clearly differ, while those found in substrata of similar composition and flow conditions but in different macroclimates are similar. The study, thus, demonstrates that the benthic macroinvertebrate community is mainly affected by substrate composition and flow conditions, but is generally unaffected by latitudinal position and macroclimate. Taxa richness of the maeroinvertebrate community was found to be the highest on hydrophyte-covered cobbles, high on moss-covered bedrock, and low on clay beds and cobble beds devoid of plant biomass. Sandy beds are compact and unstable, thus, no benthic macroinvertebrates were found colonizing such substrata. Aquatic insects account for most of the macroinvertebrates collected in these rivers. Different insects dominate in different types of substrata： mainly EPT species （Ephemeroptera, Ptecoptera, Tfichoptera） in cobble, gravel, and moss-covered bedrock; and Chironomidae larvae in clay beds. The relation between the number of species in the samples and the size of the sampling area fits a power function of the species area. One square meter （lm） is suggested as the minimum sampling area. A substrate suitability index is proposed by integrating the suitability of sediment, periphyton, and benthic organic materials for macroinvertebrates. The biodiversity of macroinvertebrates increases linearly with the substrate suitability index. Benthic taxa richness increases linearly with the suitability index.  相似文献   

基于人居环境适宜性的市域人口增长调控分区研究──以南京市为例   总被引：4，自引：0，他引：4  

段学军  田方 《地理科学》2010,30(1):45-52

构建人口规模收益函数和外部成本函数,对南京市主城、郊区和县城进行最优人口规模分析;进而通过人口随机分配模型和基于人居环境适宜性评价的优化目标函数,以预测的总人口规模和圈层人口最优规模为约束条件,采用蒙特卡洛法进行求解,获得人口的优化分布结果,与现状人口分布相比,把南京市域空间划分为四类人口发展功能区。研究认为,商业街区和老街区如湖南路、新街口街道、洪武路街道、朝天宫街道等老街区人口密度过高,需要进行人口规模的控制或调减;处于郊区的东山镇、沿江街道、仙林街道等,人居适宜性相对较高,现状人口密度较低,应快速集聚人口;南北两翼以及生态保护区的生态敏感性高,需要削减人口。  相似文献   

Changes of citrus climate risk in subtropics of China     

DUAN Hailai  QIAN Huaisui  LI Mingxia  DU Yaodong 《地理学报》2010,20(6):818-832

Based on the citrus temperature, precipitation, sunlight and climate risk degree, the article divides subtropics of China into three types: the low risk region, the moderate risk region and the high risk region. The citrus temperature risk increases with increasing latitude (except for the western mountainous area of subtropics of China). The citrus precipitation risk in the central part of subtropics of China is higher than that in the northern and western parts. The distributions of citrus sunlight risk are not consistent to those of the citrus precipitation risk. The citrus climate risk is mainly influenced by temperature. There is latitudinal zonal law for the distribution of the climate risk, that is, the climate risk increases with increasing latitude. At the same time the climate risk in mountainous area is high and that in eastern plain area is low. There are differences in the temporal and spatial changes of the citrus climate. In recent 46 years, the citrus climate risk presents a gradual increasing trend in subtropics of China, especially it has been increasing fast since the 1980s. Because of the global warming, the low risk region in the eastern and southern parts has a gradual decreasing trend, however, the high risk region in the northern and western parts has an increasing trend and the high risk region has been extending eastward and southward. The article analyses the distribution of the citrus climate risk degree of reduction rates of >10%, >20% and >30% in subtropics of China, and studies their changes in different time periods. Results show that the risk is increasing from southeast to northwest.  相似文献   

东营市城区第四纪松散堆积物工程建筑适宜性评价     

张金兰 《山东国土资源》2010,26(7):17-20

从工程地质角度,以东营城区0～50m的土体为研究对象,分析了土体的工程地质特征,采用专家类聚法,对一般工业民用建筑和高层重型建筑物场地的工程建筑适宜性做出了评价并进行了区域划分,对东营城区将来的工程建设规划具有重要的指导意义。  相似文献   

不同环境因子权重对东海鲐鱼栖息地模型的影响研究   总被引：4，自引：1，他引：3  

易炜  郭爱  陈新军 《海洋学报》2017,39(12):90-97

鲐鱼（Scomber japonicus）是栖息在西太平洋沿岸的中上层鱼类,了解其栖息地分布及其与海洋环境因子的关系有助于合理开发和管理该资源。本文根据2003-2011年7-9月中国东海鲐鱼的生产数据,采用正态分布函数分别构建海表面温度（sea surface temperature,SST）、海表温梯度（gradient of sea surface temperature,GSST）和海表面高度（sea surface height,SSH）与作业次数的适应性指数（suitability index,SI）,基于不同权重的算术平均法（arithmetic weighted model,AWM）分别建立栖息地指数（habitat suitability index,HSI）模型,并用2012年7-9月生产数据进行验证。结果显示,7、8、9月各月最佳HSI模型的SST、STG和SSH的权重分别为0.5、0.25、0.25,0.8、0.1、0.1和0、1.0、0,利用2012年7-9月生产数据与环境数据对各月份最佳权重HSI模型进行验证,在HSI>0.6的海域,7、8、9月各月作业次数比重和产量比重分别为85.87%和92.55%,76.74%和86.69%,51.83%和56.11%。研究表明,不同月份的环境因子对鲐鱼渔场分布的影响程度不同,本研究为更好地预测鲐鱼栖息地奠定了基础。  相似文献