浅谈柳河县矿产资源开发利用现状、问题及对策

柳河县地处长白山北麓，县域矿产资源十分丰富。近年来受矿产资源市场对资源需求量的不断加大，一些不法分子受利益驱动进行私挖滥采、破坏矿产资源违法活动。柳河县委、县政府积极采取措施有力地打击了破坏矿产资源的违法行为，整治和规范了矿产资源秩序，收到了较好效果。笔者结合工作实际谈谈柳河县矿产资源现状、问题及对策，仅供商榷。     

试论矿区的植被恢复与水土保持

改革开放以来，经济的高速发展大大增加了人们对能源及矿产资源的需求，引发了一系列环境污染和生态破坏问题，而人为盲目开采矿产资源又使环境进一步恶化，造成新的水土流失日益加剧，严重影响人们的生活，破坏经济的持续发展。本阐述了当前矿业生产存在的严重的植被破坏和水土流失问题，讨论矿区开采后的植被恢复及水土保持。     

浅谈柳河县矿产资源开发利用现状、问题及对策

柳河县地处长白山北麓,县域矿产资源十分丰富。近年来受矿产资源市场对资源需求量的不断加大,一些不法分子受利益驱动进行私挖滥采、破坏矿产资源违法活动。柳河县委、县政府积极采取措施有力地打击了破坏矿产资源的违法行为,整治和规范了矿产资源秩序,收到了较好效果。笔者结合工     

龙岩市矿区水土流失防治对策初探

龙岩市是福建省最重要的矿产地，随着矿产资源的不断开发利用，矿区水土流失问题凸显严峻，本就矿区水土流失现状、成因结合当地实际，浅析矿区水土流失综合防治的对策。     

我国矿产资源开发生态补偿机制的基本构建

在分析矿产资源开发生态补偿机制的内涵及生态补偿机制建立应遵循原则的基础上,阐述了我国矿产资源开发生态补偿机制框架的建立,最后提出了加快生态补偿的法制建设、实行生态补偿费征收制度、建立矿产资源开采的生态补偿保证金制度、加大对现有矿山企业的监督管理力度、加强生态补偿科学研究与试点工作的完善我国矿产资源开发生态补偿机制的建议。     

攀枝花市水土保持预防监督工作开创新局面

四川省攀枝花市位于四川西南端，与云南西北交界，地处攀西大裂谷，气候特殊，境内矿产资源丰富，主矿企业众多，水土流失十分严重。近年来，攀枝花市以科学发展观为指导，深入贯彻水土保持法及相关法律法规。     

简讯

水利部与国土资源部联手加强对土地及矿产资源开发中的水土流失控制　　 2 0 0 4年 5月 3 1日 ,水利部与国土资源部联合发出《关于进一步加强土地及矿产资源开发水土保持工作的通知》 ,携手加强对土地及矿产资源开发导致人为水土流失的控制。由于近几年我国经济社会的快速发展     

矿产资源开发与林业生态环境保护的可持续发展策略探究

随着社会的不断发展,矿山工业迅速崛起,矿山林业生态环境问题逐渐引起人们的关注。矿产资源的短缺与林业生态环境的逐渐恶化,促使人们开始思考矿产资源开发与环境保护问题。基于此,分析矿产开发与生态环境保护过程中存在的问题,并提出相关的发展策略,以推动矿产资源开发的可持续发展。     

将乐县矿产资源开发的主要问题及对策

该文介绍了将乐县矿产资源开发建设的现状，指出目前开发建设中开发力度不够、利用水平低、产品结构不合理，造成严重水土流失，引发地质灾害的问题，并提出了相应的开发保护利用对策。     

依法搞好矿山水土保持

三明市辖区总面积2．3万km^2，属内陆山区，矿产资源丰富，是福建省主要矿产区。经勘察，已发现矿产有11类68种，其中已探明储量的有46种。目前，全市已开发利用的矿产有9娄39种，年矿石总产量2000万t以上，总产值4亿元左右，矿山总数1862个，从业人员3．7万人。其中国营矿山55个，集体矿山965个，个体矿山(采矿点)842个。矿业生产的蓬勃发展对振兴兰明经济，促进两个明建设，增加群众收入起着举足轻重的作用。在许多地方，矿产资源优势逐渐变为经济优势，矿产业已成为当地国民经济建设的重要支柱。     

Physical Properties of the Soils of Sibay City of the Republic of Bashkortostan

Eurasian Soil Science - The results of the study of the properties of urban soils of the city of Sibay located in the mining region of the Republic of Bashkortostan are presented. A specific...     

食用仙人掌萎蔫气象条件分析

塑料大棚内种植的食用仙人掌在土壤墒情较好时也有萎蔫现象发生，通过试验观测和对仙人掌生理习性的分析，发现阴雨过后天气突然放晴温度急剧上升易使仙人掌发生萎蔫现象，并提出了田间管理的应对措施。     

Heterogeneity of Organic Matter of Aggregates of Protocalcic Chernozems

Eurasian Soil Science - Layers were step-by-step removed from macroaggregates (2–1 mm in diameter) of Protocalcic Chernozems via successive abrasion in a revolving rotator during 5, 10, 15,...     

青海省耕地资源开发利用分析及对策研究

分析论述了青海省耕地资源开发利用的现状、特点和问题。在此基础上,提出了对青海省耕地资源进行研究的框架体系和思路,同时基于GIS/RS技术设计了相关的技术路线。最后依据所做设计对青海省耕地资源开发利用做了初步分析,并进行了相关的对策研究分析。     

Characterization of physical and chemical properties of Varzea soils of Goias State of Brazil

Abstract

Brazil has approximately 30 million hectares of lowland areas, known locally as “Varzea,”; distributed throughout the country. Soils in these areas have the potential to support agricultural production, but very little is known about their fertility. The current experiment was undertaken to characterize the chemical and physical properties of representative “Varzea”; soils collected at 0–20, 20–40, 40–60, and 60–80 cm depth intervals from 23 sites in Goias State of Brazil. Organic matter contents averaged 42 g/kg in the surface 20 cm of soil and should make a significant contribution to overall nutrient availability. Soil pH increased slightly with depth from a mean value of 5.2 in the surface 20 cm of soil to a mean value of 5.4 in the 60–80 cm depth interval. Several soils had exchangeable Al values ≥ 1.0 cmol Al/kg, but soil Al saturation was generally less than the 60% level frequently associated with Al toxicity. However, cereal and legume production could benefit from lime addition in many of these soils. Although base saturation was fairly low in some soils, exchangeable Ca and Mg levels were, in general, adequate throughout the profile. Extractable P levels were adequate in most surface soil samples. Extractable K levels in these soils were generally low, and the application of K fertilizers should be beneficial, especially in conjunction with lime addition. The high clay content “Varzea”; soils of the Brazilian lowlands have some drainage problems but generally exhibit favorable chemical properties for crop production when compared to soils of the well‐drained Cerrados.     

Estimation of potential nitrogen-fixing activity of agrophytocenoses soils of the subtropical zone of Russia

An estimation of potential nitrogen-fixing activity of various soil types under agrophytocenoses of tea, filbert, peach, and pawpaw which grow in the area of Greater Sochi is given. High indicators of nitrogen fixation activity in the soil in the course of vegetation were characteristic of agrocenoses of pawpaw, peach, and filbert. The lowest level of nitrogen fixation was noted in the soil of a tea plantation. A negative correlation dependence of potential nitrogen-fixing activity on the acidity of the soil solution was established. A study of the seasonal dynamics of the activity of nitrogen fixation of soils of agrocenoses of the subtropical zone of Russia made it possible to distinguish a less active winter and more active spring-summer-autumn periods.     

Kinetics of Popping of Popcorn

The rate of popping of popcorn was measured in oil and in air. Kinetic data for lifetimes of individual kernels from a large population were obtained in oil at six constant temperatures (180–250°C) and also in an air‐popper at 202°C. The data are characterized by an induction period, which is, significantly, followed by a first‐order decrease in the number of unpopped kernels versus time. The activation energy for the first order process is 166.7 kJ/mol between 180 and 210°C, and 53.8 kJ/mol between 210 and 250°C. These data are consistent with a model that assumes 1) that the rate of heat transfer into a kernel follows Newton's law of cooling; 2) that in a sample of kernels there exists a distribution of critical pressures; 3) that for an individual kernel, the probability of popping is directly proportional to the difference between the internal aqueous vapor pressure and the kernel's critical pressure; and 4) that the measured rate constant at any temperature is an average overall of the kernels in the sample with critical pressures equal to or less than the internal aqueous vapor pressure. Minimum popping temperatures predicted by the model are 181 ± 2°C (oil) and 187 ± 2°C (air), in good agreement with previously reported direct measurements.     

物联网安全及解决措施

物联网是一个集信息通信、数据交换、传感器技术与软件工程于一体的综合性产业,探讨和分析了物联网的结构体系与发展中遇到的安全问题。     

荔枝种子结构的扫描电镜观察

荔枝种子从果实中剥离出来后, 即使在室内条件下, 也极易失水干缩, 潮湿环境中又易发霉而腐烂。扫描电镜观察表明: 种皮上布满纹孔, 水分散失面积很大; 种脐部为疏松的海绵组织, 且营养丰富。据此, 生产上应对种子彻底清洗, 并保存于适当湿度的环境中, 以提高其发芽率。     

三门峡水库库岸坍塌成因分析与防治措施研究

三门峡水库自1960年9月蓄水运行以来,库岸坍塌现象频繁发生,平均每年塌岸0.5～0.7亿m3.指出了造成库岸坍塌的原因主要是地质环境的影响以及水力条件的变化;不同的地形、地貌、地质结构和岩性特征,表现了不同的塌岸强度,其中黄土塬区为极强塌岸段,黄河Ⅱ级阶地为强烈塌岸段,黄河Ⅰ级阶地为中等强烈塌岸段;分析了引起库岸坍塌的主要水力条件有大气降水、地表水和地下水,并且不同水力条件及其变化特征,对库岸坍塌影响的方式和程度也不同;最后给出了防治库岸坍塌应采用标本兼治的原则,治标是指对塌岸进行必要的加固、支挡、衬砌等;治本就是根据引起塌岸的原因以及不同地质环境条件下的塌岸特征和水力条件,因地制宜,因害设防,从根本上进行综合治理.