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281.
当前,距离2020年实现农业农村污染治理攻坚战目标的时间不到两年,我国农村环境整治工作仍面临着资金投入空缺较大、村民内生动力不足等突出问题。本文在明确激发农民内生动力的意义和必要性后,全面分析了当前农村环境整治形势,深刻阐述了村民参与环境整治的制约因素,并分别从事权划分、推进方式、奖惩机制和思想意识四方面,提出了激发村民内生动力助力农村污染治理攻坚战的对策建议。 相似文献
282.
异地开发是农村剩余劳动力转移的重要模式 总被引:2,自引:0,他引:2
本文阐述了异地开发在农业方面的4点作用和农村剩余劳动力转移的3种基本模式。结合我国国情,指出异地开发是当前我国农村剩余劳动力转移的重要模式,它具有投入小、见效快、收益大的特点。建议政府组织开展有关实施异地开发的政策和措施等问题的研究,把异地开发工作引向深入。 相似文献
283.
This study examined possible routes for lead (Pb) accumulation in resident pigeons collected from rural, urban, and four industrial sites in Korea. The accumulation pattern of Pb was comparable to the study sites. The highest Pb concentration was found in the bone, followed by kidney, liver, and lung of pigeons. Highest Pb residues in bones were found in urban (Seoul), and two industrial complex areas (Busan and Ulsan), which were about 15 times higher than rural area (Duckjuk island), and followed by Ansan and Yochon industrial areas. Regional Pb variations in liver, kidney, and lung tissues were also similar pattern with the bone Pb difference. These findings indicate that Pb accumulation in tissues of pigeons may be affected by the Pb exposure in their respective habitats. Crop contents and gizzard materials were investigated as representing the ingested items. No difference of Pb concentration was observed in major foods (maize and/or wheat) of crop contents in the study sites except Busan, whereas variations of Pb levels in gizzard materials were indicative of a similar pattern with tissue Pb differences. The Pb concentration in tissues of pigeons did not correspond well to the atmospheric Pb levels. With regard to possible Pb sources, ingested items especially materials present in the gizzard are important sources for Pb contamination to pigeons because Pb-containing sources may be expected to present in roadside particles, dusts, paint chips and building flakes. However, air Pb value being low may not affect significant as the regional variations in tissues of pigeons. 相似文献
284.
M.K.B. Lüdeke O. Moldenhauer G. Petschel-Held 《Environmental Modeling and Assessment》1999,4(4):315-326
Starting from the basic assumption of the syndrome concept that essentially all of the present problematic civilization–nature interactions on the global scale can be subdivided into a limited number of typical patterns, the analysis of the response of these patterns (syndromes) to climate change can make a major contribution to climate impact research, surmounting the difficulties of more common sectoral ceteris paribus impact studies with respect to their systemic integration. In this paper we investigate in particular the influence of climate on the regional proneness or disposition towards one of the most important syndromes with respect to famines and malnutrition, the Sahel Syndrome. It describes the closely interlinked natural and socioeconomic aspects of rural poverty driven degradation of soil and vegetation on marginal sites. Two strategies of global climate impact assessment on a spatial 0.5°×0.5° grid were pursued: (a) As a measure for the climate sensitivity of the regional proneness, the absolute value of the gradient of the disposition with respect to the global field of 3} 12 monthy normals of temperature, irradiation and precipitation is calculated. (b) The disposition was evaluated for two different climate forecasts under doubled atmospheric CO2 concentration. For both strategies two new quantitative global models were incorporated in a fuzzy-logic-based algorithm for determining the disposition towards the Sahel Syndrome: a neural-net-based model for plant productivity and a waterbalance model which calculates surface runoff considering vertical and lateral fluxes, both driven by the set of 36 monthly climatological normals and designed to allow very fast global numerical evaluation.Calculation (b) shows that the change in disposition towards the Sahel Syndrome crucially depends on the chosen climate forecast, indicating that the disagreement of climate forecasts is propagated to the impact assessment of the investigated socio-economic pattern. On the other hand the regions with a significant increase in disposition in at least one of the climate scenario-based model runs form a subset of the regions which are indicated by the local climate sensitivity study (a) as highly sensitive – illustrating that the gradient measure applied here provides a resonable way to calculate an upper limit or worst case of negative climate impact. This method is particularly valuable in the case of uncertain climate predictions as, e.g., for the change in precipitation patterns. 相似文献
285.
楚雄市农村能源建设的生态经济效益分析 总被引:1,自引:0,他引:1
通过对楚雄市2002年农村能源现状及2002-2010年农村生活用能源建设规划分析,对2005年、2010年能源结构及生态环境效益进行了定量分析。经过8年农村能源建设,完全可以实现能源结构优化。环境、经济效益非常显著。 相似文献
286.
287.
Tim Chatterton Stephen Dorling Andrew Lovett Michael Stephenson 《Water, Air, & Soil Pollution: Focus》2002,2(5-6):173-187
This study uses a combination of data from U.K. monitoringstations and from modelling undertaken with the U.K.Meteorological Office's NAME Model to investigate therelative influences of primary and secondary particulateson total PM10 levels at sites in the United Kingdom. Co-located PM10 and sulphate aerosol measurementsindicate that sulphate has a disproportionately largeinfluence on the variation of PM10 levels incomparison to its contribution to their total mass.Comparisons of measured PM10 at urban centre, roadsideand rural sites suggest that local primary sources havevery little influence on daily mean levels. NAME has beenused to model both primary particles and sulphate aerosolfrom sources across the whole of Europe. The discrepanciesbetween modelled and observed PM10 suggest that coarseparticles, such as windblown dust and resuspended roaddust,may comprise a very large, if not dominant, proportion ofobserved PM10 levels. The apparently minor role ofprimary particles (especially locally-sourced ones) raisesa number of issues regarding the suitability of current U.K.and European legislation to addressing the particle problem. 相似文献
288.
首先论述了农村人力资源开发的重要地位和作用,然后通过对西部地区雅安市对岩镇村人力资源状况的调查与分析,结合实际及当前经济发展的需要,就如何搞好对岩镇农村人力资源的开发以服务于地方经济,提出了一系列切实可行的措施,以供西部地区的类似小镇借鉴。 相似文献
289.
我国农村环境污染问题及成因分析 总被引:1,自引:0,他引:1
详细阐述了我国农村环境污染的具体表现,并综合分析了污染造成的危害及产生污染的原因,针对具体情况从促进农业生产方式转型、增强环保意识、统筹城乡发展防止污染转嫁、完善农村环境监督法律体系四个方面提出了治理环境污染、推进农村生态文明建设的可行性措施,以期为我国农村环境的综合治理提供参考。 相似文献
290.
IntroductionReportedasthethirdpoleoftheearth(Zheng ,1996) ,theTibetregionisthemainbodyoftheQinghai TibetPlateau.Itcrosses 9°50′oflatitudefromsouthtonorthand2 0°30′oflongitudefromeasttowest,withavastareaof1 2millionkm2 andahighaverageelevationofover40 … 相似文献