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蓝田膨润土系笔者首次发现,本文初步研究了该膨润土的成分、属性、物化性能及其地质特征等。经研究认为,蓝田膨润土属钙镁基土,是比较少见的类型;除含大量蒙脱石外,还含一定数量的有益组分——凹凸棒石和高岭石;物化性能尚好;沉积成因,具有一定的规模和应用价值,建议应进一步进行普查找矿和应用开发研究。 相似文献
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膨润土的改性研究及其应用 总被引:12,自引:0,他引:12
研究了膨润土的改性方法及活化膨润土对模拟水样浊度、色度、苯酚和苯胺等的去除效果,初步探讨了改性机理。结果表明,活化膨润土较原土具有更高的离子交换能力和吸附能力,溴化十六烷基三甲铵(CTMAB)—改性膨润土综合效果最好。可使模拟水样脱色率达90%以上,苯胺去除率达80%以上,苯酚去除率达40%以上。为天然膨润土的改性及其在染化工业废水处理中的应用提供了有价值的参考依据。 相似文献
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膨润土的改性研究及其应用 总被引:1,自引:0,他引:1
研究了膨润土的改性方法及活化膨润土对模拟水样浊度、色度、苯酚和苯胺等的去除效果,初步探讨了改性机理。结果表明,活化膨润土较原土具有更高的离子交换能力和吸附能力,溴化十六烷基三甲铵(CTMAB) 改性膨润土综合效果最好,可使模拟水样脱色率达90%以上,苯胺去除率达80%以上,苯酚去除率达40%以上。为天然膨润土的改性及其在染化工业废水处理中的应用提供了有价值的参考依据。 相似文献
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用膨润土处理含铅离子废水的研究 总被引:1,自引:0,他引:1
用膨润土对模拟含pb2 离子的废水进行了试验研究.结果表明:膨润土是一种有效的吸附剂.其在粒径范围为200-300目,温度30℃左右,用量每1L含铅废水(50mg/1)为3g,pH值在大于7中性至碱性,振荡时间为45min的实验条件下,对废水中Pb2 去除效率高于97%. 相似文献
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Urban comprehensive carrying capacity is an important guarantee and external representation of regional sustainable development. Based on urban comprehensive carrying capacity, this paper constructed a performance evaluation index system of urban comprehensive carrying capacity, and used entropy method, urban comprehensive carrying capacity measurement model and urban sustainable development model to measure spatial and temporal comprehensive carrying capacity of Harbin City in Heilongjiang Province from 2012 to 2017. The results show that: 1) index weight analysis suggested the regional development mode in Harbin still followed an epitaxial development mode, which pursued the expansion of scale and the growth of total amount of regional development, neglecting the effective utilization of resources and the improvement of structural benefits. 2) In the pressure system, the index of resource support has dropped sharply. The index of environmental capacity and social progress has risen circuitously, while the degree of agglomeration and the value of transportation facilities have risen steadily;in the pressure system, the index of population development and economic growth tended to fluctuate, while energy consumption and environmental pollution showed a more synchronous change in characteristics, and the livable demand remained at a high level. 3) The carrying capacity index of resources and environment in Harbin has been declining, and the acquired carrying capacity index fluctuated. The long-term regional development model has severely impaired the carrying capacity of resources and environment. 4) The comprehensive carrying capacity of Harbin has clear spatial differentiation characteristics. Finally, the paper proposes that location conditions, economic development level, government regulation, and science and technology are the main factors influencing the spatial differentiation of urban comprehensive carrying capacity. 相似文献
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黑龙江省草帽山-基座山地区位于大兴安岭中段华力西、燕山期铁、钨、银、金、钼、铜成矿带的北东端,呼玛县兴隆砂金矿区的南部。区内经历了漫长的沉积地层发育及多期次的强烈岩浆活动,分布有众多砂金矿床及岩金矿点,成矿条件较为优越。文章对区内1∶5万水系沉积物测量采集的样品分析数据进行了统计分析,将11种元素划分成Ag,Cu,Pb,Zn组合类型、W,Mo,Bi组合类型、As,Sb,Hg组合类型、Au组合类型,总结了区内地球化学特征及地质意义,并通过对各元素的平均值、变异系数、相关性及元素空间分布特征进行比较研究,认为Au元素含量高于全省丰度、变异系数为大(5.668),单元素异常强度高、浓度分带明显,为该区最主要的成矿元素,研究区是金成矿的有利地区。 相似文献
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介绍《黑龙江省地图集》的设计、编辑特色,图集的内容结构,并重点对市县图组的编排顺序、市县地理方位的表述进行研究. 相似文献
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退耕还林对牡丹江区域生态环境脆弱性的影响研究 总被引:2,自引:0,他引:2
从脆弱生态系统的特征入手,选取景观分离度、分维数倒数、破碎度3个反映景观稳定性及抗干扰能力的景观格局指数,并结合土壤侵蚀强度构成区域生态环境脆弱性的敏感因子,针对研究区地形,以景观生态适宜度作为生态系统自我恢复能力的表征,构建了牡丹江区域生态环境脆弱度评价模型。评价结果表明:(1)退耕还林前后景观类型脆弱度均表现为旱田>建设用地>水田>林地>未利用土地>水域>沼泽>草地;(2)研究区生态脆弱度表现为以脆弱度高值区为中心呈环状向四周递减的趋势,脆弱度高值区面积比重由退耕前的21.57%减小到退耕后的17.11%,脆弱度低值区面积比重由退耕前的63.14%增加到退耕后的67.66%;(3)生态脆弱度高值区域主要分布在200~400m的海拔高度,0~8°的坡度范围内,且退耕后面积比例呈下降趋势,而低值区域则分布在>300m海拔高度的各个坡度范围内,且退耕后面积比例呈上升态势。研究结果符合研究区实际状况。概言之,退耕还林缓和了研究区生态脆弱度状况,促进了生态环境质量向良好方向发展。 相似文献
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Changes of soil labile organic carbon in different land uses in Sanjiang Plain,Heilongjiang Province 总被引:4,自引:2,他引:4
Guilan Zhang 《中国地理科学(英文版)》2010,20(2):139-143
In the Sanjiang Plain,Northeast China,the natural wetland is undergoing a rapid conversion into agricultural land,which has resulted in drastic ecological changes in the region. To investigate the effects of different land uses on soil labile organic carbon,soils of Calamagrostis angustifolia wetland,Carex lasiocarpa wetland,dry farmland,paddy field,forest land and abandoned cultivated land were collected for measuring the contents of soil microbial biomass carbon (MBC),dissolved organic carbon (DOC),readil... 相似文献
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A New Combination and Two Varieties of Polystigmate Gomphonema (Gomphonemaceae Bacillariophyta) from Heilongjiang Province, China 总被引:1,自引:0,他引:1
The authors discribed a new polystigmate combination, Gomphonema turris Ehr. var. okamurae (Skv.) Fan et Bao.comb.nov., and two new varieties, Gomphonema tuttis Ehr. vat. latum Fan et Wang. var.nov. and Gomphonema acum/natum var. obtusum Fan et Bao, var. nov., that were distinguished by frustule morphology under LM. The samples were collected from freshwater of Heilongjiang Province, China. 相似文献
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ZHANGXue-ping ZHANGYi CAOHui-cong 《中国地理科学(英文版)》2004,14(4):377-381
This article reveals the ecological features and the theories and methods of introducing pioneer plants in the process of eco-restoring in different degenerative ecosystems in the drainage basin of Erlongshan Reservoir in Heilongjiang Province by systemically studying the deteriorative ecosystems and using recovery theory. The study shows that with the rise in degenerative degrees of the ecosystems, bio-species and bio-diversity sharply decrease in the study area and microclimate becomes wanner and drier in natural ecosystem. Therefore, we must attach importance to the construction of plants and biodiversity. In the study, different pioneer plants are selected for different degenerative ecosystems to restore and maintain the service functions of the ecosystems. 相似文献
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The authors discribed a new polystigmate combination,Gomphonema turris Ehr. var.okamurae (Skv.) Fan et Bao. comb. nov., and two new varieties,Gomphonema turris Ehr. var.latum Fan et Wang. var. nov. andGomphonema acuminatum var.obtusum Fan et Bao, var. nov., that were distinguished by frustule morphology under LM. The samples were collected from freshwater
of Heilongjiang Province, China.
Project No. 39899400 supported by the NSFC. 相似文献
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黑龙江省地理信息产业园奠基仪式今天在这里隆重举行,首先我代表黑龙江省人民政府向出席奠基仪式的陈邦柱局长,顾海良书记以及各们嘉宾表示热烈的欢迎,向给予产业园区建设大力支持与帮助的各有关单位和同志们表示最诚挚的谢意。 相似文献