中山：厚植绿色底色 奔赴绿美未来

<正>大道致远，奋楫笃行。在中山奋力融入大湾区一体化融合发展、全面提升城市能级过程中，绿色一直是中山高质量发展的底色。作为珠江西岸重要枢纽城市，中山市以省级改革创新实验区建设为契机，以高水平的生态环境保护促进经济的高质量发展，坚决扛起“治水攻坚”、低效工业园改造等重担，全面落实中央生态环境保护督察整改，不断加强生态环境创新与服务，持续改善生态环境质量，为推动中山高质量发展交出一张精彩的“时代答卷”。一幅生态环境更加友好、产业发展更加高质、城乡品质更加优良、人民生活更加幸福的画卷，正在中山徐徐展开。     

工业园区的环保问题与对策

近几年来，为了促进当地经济的发展，各地先后建设了一批工业园区。工业园区的兴起和发展，有力地促进了当地经济的发展。本文论述了当前工业园区发展中存在的主要环保问题，分析了产生的原因，提出了工业园区环保问题的对策。     

中山:广东第一个生态市

<正>中山在2004年率先开展创建全国生态市,5年后,中山交出了一份经济、社会和环境"三赢"的答卷。◆城市名片中山市地处位于珠江三角洲中部偏南的西、北江下游出海处,北连广州,毗邻港澳,总面积1800.14平方公里,户籍人口145.15万,是民主革命先驱孙中山先生的故乡。     

给子孙后代留下一片绿

随着中山市经济建设和交通事业的发展,噪声和污浊的空气扰袭广大居民,人们渴望有一个宁静舒适的生活环境。市领导构思了“九五”乃至2010年跨世纪的环保工程,目的就是要把中山城区建在花园绿地之中,真正做到绿树与楼房互相掩映,花草与蜂鸟欣欣向荣,     

饮用水源保护 中山迎难而上

正饮用水源保护,一直是中山市环境保护工作的重中之重。在经济快速发展,工业和居民生活用水大幅度增长,市供水、排水格局发生深刻变化的背景下,中山如何保障饮用水源安全?"要加强水源地保护,构筑生态红线,全力保障饮用水源安全。"在日前召开的全省水污染防治工作电视电话会议上,广东省长朱小丹强调。饮用水源保护,一直是中山市环境保护工作的重中之重。在经济快速发展,工业和居民生活用水大幅度增长,市供水、排水格局发生深刻变     

保生态促航运加快济宁市经济发展

根据济宁地区的自然地理及资源情况,分析了航运对当地经济、防洪排涝、生态保护、旅游等方面的促进作用,也阐明了航运对生态平衡--水资源的依赖.提出了"科技兴水、加强洪水管理、利用"的观点,提出了发展航运注意保护生态环境的具体措施,以达到保护好生态促进航运发展,带动当地经济全面发展的目的.     

正确处理资源开发与生态保护的关系

这些年来,我国的经济在飞速提升,各行各业都取得了不错的发展。就我国多年的发展情况来看,在进行经济发展的时候就必定要对现有的资源进行开采,资源的开采必然会影响开采的地区的生态环境。可以说,资源开采促进着经济的发展,但是对于资源的开采需要掌握好一个度,过度的资源开采会严重的破坏当地的生态环境,为以后的生活和经济发展带来巨大的危害,甚至使得经济出现倒退的情况。正确的处理好资源开发和生态环境保护的关系是当前乃至以后经济发展的重中之重,合理的对现有的资源进行开发,在保证经济良好的发展的同时还可以对当地的生态环境起到一定的保护的作用,倘若因为资源过度开发导致当地的生态环境遭到破坏,可能会影响经济的发展,甚至出现使得经济倒退的情况。因为,正确处理资源开发与生态保护的关系就显得尤为重要了。本文主要对正确处理资源开发与生态保护的关系进行分析介绍。     

环境科学基础理论 环境经济学

X196200600697第七类进口废物拆解业的环境经济分析/沈东升…(浙江大学环境与资源学院)∥农业环境科学学报/中国农业生态环保协会.-2005,24(3).-590~594环图X-15第七类进口废物拆解业作为我国允许的废物回收利用行业,目前是浙江省台州市路桥区主要的支柱产业。采用费用-效益分析方法分析了第七类进口废物拆解业对当地乡镇的环境经济影响。结果表明,第七类进口废物拆解业对当地经济的发展起了不可忽略的作用,与当地其他行业相比,在一定时期内还应予适当发展。表3参8环境科学基础理论 环境经济学…     

如何利用水环境资源承载力确定城市规模研究——以天府新区为例

以水环境承载力的概念及内涵为基础,研究了天府新区规划初期水资源可持续利用的条件,并基于最大纳污量计算了可承载的区域人口和社会经济规模,为天府新区的区域整体发展规划提供依据.在天府新区新的发展目标下,论述了消除或缓解水资源的压力措施,即:改善和提高水资源管理水平甚至宏观社会经济决策水平,改善当地水资源承载状态,提高当地水资源系统对未来社会、经济、人口和生态环境的承载力.     

中山自然学院——自然教育的播种者

正广东自然学院中山分院(以下简称"中山自然学院")成立于2017年底,是由广东省环境保护宣传教育中心授权,在中山设立的唯一分院,负责在中山区域组织学生进行自然、环保项目的教育、实践、比赛、研学、交流等活动,提升市民对自然环境保护的意识。中山自然学院通过引入企业、政府和学校等作为支持机构,引入众多自然景区作为课程执行的主要力量,并根据服务对象的不同,分别向学校、企业和社区输送有针对     

Attempts to train goldfish to respond to magnetic field stimuli

Two different conditioning procedures, one appetitive and the other aversive, were used in separate attempts to demonstrate response to magnetic fields in the goldfish, Carassius auratus. Our results lead us to question those of an orientation experiment by Becker, although we recognize the possibility that goldfish may be sensitive primarily to magnetic field direction rather than intensity and that their directional sensitivity may be evidenced most readily by orientation in the field.     

从生态旅游到低碳旅游——从理念到实践

阐述了生态旅游、低碳旅游的基本概念,分析了生态旅游存在的不足,提出低碳旅游的量化及建立各项标准及其指标评价体系并将之融入低碳旅游全过程以实现低碳旅游的标准化,重点在于实现低碳理念、低碳参与者及低碳实践3个方面的有机结合,以促进旅游业的可持续发展的可操作性建议.     

以学定教,提高课堂教学效率

根据心理学理论,学习是一个学生内化的过程,学生是自主学会的,而不是被动教会的。因此在教学中,教师只有做到以学定教,才能有效提高教学效率,促进学生对知识的掌握。     

如何做好突发环境事件应急监测的快速响应

应急监测是突发性环境污染事故处置中的首要环节,是对污染事故及时、正确地进行应急处理、减轻事故危害和制定恢复措施的根本依据。文章从制定应急监测预案、加强应急监测能力建设、摸清污染源状况、加强应急培训和应急演练等方面对做好突发环境事件应急监测的快速响应作了简要的阐述,供大家探讨。     

Croppers to livestock keepers: livelihood transitions to 2050 in Africa due to climate change

The impacts of climate change are expected to be generally detrimental for agriculture in many parts of Africa. Overall, warming and drying may reduce crop yields by 10–20% to 2050, but there are places where losses are likely to be much more severe. Increasing frequencies of heat stress, drought and flooding events will result in yet further deleterious effects on crop and livestock productivity. There will be places in the coming decades where the livelihood strategies of rural people may need to change, to preserve food security and provide income-generating options. These are likely to include areas of Africa that are already marginal for crop production; as these become increasingly marginal, then livestock may provide an alternative to cropping. We carried out some analysis to identify areas in sub-Saharan Africa where such transitions might occur. For the currently cropped areas (which already include the highland areas where cropping intensity may increase in the future), we estimated probabilities of failed seasons for current climate conditions, and compared these with estimates obtained for future climate conditions in 2050, using downscaled climate model output for a higher and a lower greenhouse-gas emission scenario. Transition zones can be identified where the increased probabilities of failed seasons may induce shifts from cropping to increased dependence on livestock. These zones are characterised in terms of existing agricultural system, current livestock densities, and levels of poverty. The analysis provides further evidence that climate change impacts in the marginal cropping lands may be severe, where poverty rates are already high. Results also suggest that those likely to be more affected are already more poor, on average. We discuss the implications of these results in a research-for-development targeting context that is likely to see the poor disproportionately and negatively affected by climate change.     

重归大自然——密西西比河之行

密西西比河是美国第一大河。它一路曲曲弯弯向着墨西哥湾蜿蜒流去．沿途形成广袤的洪泛平原,滋润着美国大陆41％的土地。水量也比美国其他河流都要多。密西西比河及其洪泛平原哺育着400多种野生动植物。北美地区40％的水禽都沿着密西西比河的路径迁徙。密西西比河对于美国。如同长江对于中国,无论从经济还是生物多样性保护等方面,其作用都是举足轻重。     

Soil microbial response to herbicides applied to glyphosate-resistant canola

Adoption of glyphosate-resistant canola (Brassica napus L.) has increased glyphosate applications to this crop, and concerns have been raised about unintended consequences of these multiple applications. A field trial was conducted to evaluate the effects of pre-seed and in-crop glyphosate and alternative herbicides on soil microbial community functional structure, diversity and biomass. Pre-seed treatments were 2,4-D, glyphosate and 2,4-D + glyphosate, and in-crop treatments were glyphosate applied once, glyphosate applied twice, ethalfluralin, ethalfluralin + sethoxydim + ethametsulfuron + clopyralid, and sethoxydim + ethametsulfuron. Rhizosphere and bulk soil was collected at flowering stage of canola and analyzed for bacterial community-level substrate utilization patterns and microbial biomass C (MBC). Where differences were significant, pre-seed application of both 2,4-D and glyphosate altered the functional structure and reduced the functional diversity of soil bacteria, but increased MBC. These effects were not necessarily concurrent. The reduction in functional diversity was due to reduction in evenness, which means that the soil where both pre-seed herbicides had been applied was dominated by only few functional groups. In 1 year, two in-crop applications of glyphosate also reduced the functional diversity of soil bacteria when applied after pre-seed 2,4-D, as did in-crop sethoxydim + ethametsulfuron following pre-seed glyphosate. Even though significant differences between herbicides were fewer than non-significant differences, i.e., there were no changes in soil microbial community structure, diversity or biomass in response to glyphosate or alternative herbicides applied to glyphosate-resistant canola in most cases, the observed changes in soil microbial communities could affect soil food webs and biological processes.     

亲近自然的一条捷径——向你推荐《生物多样性知识达人手册》

"它随处可见,从最大的海洋到最小的水坑,从最茂密的森林到最干旱的荒漠,从最富饶的沼泽到最高的山峰……它是一个活的银行账户,为人类全部事业和财富提供资本.它是什么?它就是……生物多样性." 翻开《生物多样性知识达人手册》的第一页,在"开头的话"中,你就能读到上面这一段饶有趣味的文字,让你不自觉地联想到我们所处的环境和我们赖以生存的地球.没错,这是一本新鲜出炉的、以生物多样性为主题的读物,用生动有趣的方式告诉你,什么是生物多样性?生物多样性为什么重要?你怎样才能保护好这个星球的生物多样性?     

浅谈如何做好孩子的入学准备

从幼儿园升入小学是孩子迈入知识殿堂的关键一步,也是孩子人生的一大转折。如何协助家长和教师,帮助孩子顺利实现这次转折是非常重要的。基于此目的,结合多年从事幼小教育工作的实际,并根据教育部颁布的《幼儿园教育指导纲要》精神,紧扣学前儿童的心理和学习特点,阐述如何让孩子在各方面得到系统的锻炼和提高,为顺利升入理想的小学、并尽快适应小学阶段的学习和生活做好准备。