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嫩江沙化的危害及其防治对策 总被引:1,自引:0,他引:1
本文阐述了嫩江沙化的危害,并从我国国情出发,提出了嫩江沙化的防治对策,目地是让人们更加清醒地认识到目前黑龙江省面临沙化危害的严峻态势,希望人们自觉地投入到防沙治沙工作中去,切实做到人进沙退。 相似文献
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辽宁省沙化土地面积54.96×104hm2,潜在沙化土地面积60.66×104hm2.大部分的沙化土地分布在辽西北地区,辽西北是我国北方土地沙漠化最严重的地区之一.近来监测数据表明,辽宁省土地沙化有恶化的趋势,而且这种沙漠化正逐年向辽宁省的腹地扩展.根据辽宁省的沙化特点以及主要的生态环境问题,初步探讨了其有效的防治对策. 相似文献
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四川若尔盖湿地退化成因分析与对策研究 总被引:8,自引:0,他引:8
本文以四川若尔盖湿地为研究对象,主要贡献为:(1)应用卫星遥感数据对若尔盖湿地退化趋势进行了科学定量分析;(2)采用博弈论的分析方法对相关利益主体进行解析,在寻求利益均衡点的基础上,提出湿地保护性开发对策;(3)针对湿地退化因素提出了多种对策,其中生态移民的设想对保护四川若尔盖湿地较为适宜;(4)提出了“禁止-限制-发展”的产业结构调整思路,以指导湿地的合理开发利用。 相似文献
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库尔勒市大气污染成因分析及防治对策 总被引:1,自引:0,他引:1
库尔勒市大气污染属典型风沙兼煤烟型污染,从自然条件、能源消耗、治理水平、工业布局等方面对大气污染进行分析,并提出相应防治对策。 相似文献
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浅谈光化学烟雾的危害及防治对策 总被引:3,自引:0,他引:3
随着改革开放和经济的迅速发展、汽车数量的迅速增加,防治光学烟雾的形成是当前亟待解决的问题。本文概述了光化学烟雾的危害、污染源及防治措施。 相似文献
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近年来,随着人们环境意识和对生活质量需求的提高,大中城市噪声问题投诉比例逐渐增高,其中主要投诉的是建筑施工噪声和噪声扰民问题。本文根据建筑施工特点,结合笔者从事执法工作的实践,对其投诉案件的成因及防治进行了比较系统的分析和讨论。 相似文献
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浅谈冷季型观赏草坪在秦皇岛地区的主要危害及防治 总被引:2,自引:0,他引:2
针对冷季型观赏草坪在秦皇岛地区常见的疾病、虫害、杂草及其它危害,对草坪常见的六种病害:褐斑病(Brown spot)、萎蔫病(Bacterial wilt)、腐烂病(Pythium blight)、白粉病(Powdery mildew)、锈病(Rust)、铜斑病(Copper spot);四种大量发生的虫害:粘虫、蛴螬、地老虎、蚂蚁;四种常见的其他危害:日烧、肥料灼伤、苔藓、伞菌和毒菌等,从发病机理、危害症状、识别特征、防治要点等四个方面进行详细阐述. 相似文献
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环境中氡的水平及其对人体危害 总被引:4,自引:0,他引:4
氡是致人体天然辐射剂量贡献最大的核素,也是肺癌发病的重要因子,是净化空气要优先考虑的问题。为此,本文报告了环境氡的水平以及它对人体产生的危害,这些知识对净化环境,保护健康有重要意义 相似文献
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Nils Holtug 《Journal of Agricultural and Environmental Ethics》2001,14(2):168-178
It is suggested that the Harm Principle can be viewedas the moral basis on which genetically modified (GM) food iscurrently regulated. It is then argued (a) that the concept ofharm cannot be specified in such a manner as to render the HarmPrinciple a plausible political principle, so this principlecannot be used to justify existing regulation; and (b) that evenif the Harm Principle were a plausible political principle, itcould not be used alone in the regulation of GM food, since itdoes not express a concern for the expected benefits of suchfood. 相似文献
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新疆荒漠化土地面积大,分布范围广,发展程度高,危害严重.目前,新疆的荒漠化面积为104.4×104km2,占全区总面积的65.25%.在自然因素和人为因素叠加影响下,新疆的荒漠化越来越严重威胁到绿洲生态环境.近几十年来,新疆过度开垦和人口增长过快已经给原本脆弱的生态环境带来巨大压力,加剧了水资源的耗用和土地荒漠化的进程.因此,防治荒漠化,是实现荒漠地区人口,资源与环境协调发展的根本途径.本文简要论述新疆日趋严重的荒漠化对绿洲生态环境的危害.并提出防治对策和见解. 相似文献
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Mark Sagoff 《Journal of Agricultural and Environmental Ethics》2009,22(1):81-88
In their fine paper, Evans et al. (2009) discuss the proposition that invasive non-native species (INS) are harmful. The question to ask is, “Harmful to whom?” Pathogens that make people sick and pests that damage their property—crops, for example—cause harms of kinds long understood in common law and recognized by public agencies. The concept of “harm to the environment,” in contrast, has no standing in common law or legislation, no meaning for any empirical science, and no basis in a political consensus other than might be drawn from the Endangered Species Act. As a generalization, the proposition that INS cause “environmental harm”—since this concept is empty of legal, scientific, and political meaning—must rest on definition, diktat, or diatribe. As Evans et al. suggest, however, the idea of “harm to the environment” is not always and certainly need not be arbitrary; it might gather significance in the context of a particular place through a political process that weighs economic concerns with cultural, religious, aesthetic, and other relevant beliefs, practices, and commitments that people who care about that place present. It is not clear, however, that adaptive management, which Evens et al. propose, will provide that democratic political process. 相似文献