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有机农产品市场分析与产销方略策划 总被引：1，自引：0，他引：1
食品安全危机引人关注,生态农业、有机农产品渐受亲睐,但现有的有机农业经营模式制约了有机农产品的推广.以消费者问卷调查为基础,从研究消费者对农产品安全问题的感受和对有机农产品的态度着手,对我国有机农产品市场进行了分析,并策划了旨在市场推广的有机农产品生产和营销方略. 相似文献
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近年来，我国先后开发了一批野菜系列农产品。为使这些产品能够健康地发展，在此笔者谈点粗浅看法，以期能起到一些有益的促进作用。 1新开发野菜系列产品的特点 潜在性1.1新开发的野菜系列农产品及其市场是潜在的，消费者虽然需要，但往往不知道，即仅是生理和心理上的潜在需要，而不是有意识的现实需要，需要经生产者开发后，才能由潜在变成现实，为消费者所认识、接受。例如：天绿香又名树仔菜、泰国枸杞，是一种热带野生灌木，其嫩茎、嫩叶可作汤菜食用，长期食用具有养颜保健、利血清脂、养肝明目、开胃清滞等保健功能。天绿香未开发… 相似文献
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正近年来,牡丹江市坚持以提高农产品质量安全,保障消费者健康,不断满足人民日益增长的对美好生活需要为目标,以贯彻落实《农产品质量安全法》、《食品安全法》为主线,以抓好农产品产前、产中、产后三大环节为重点,始终把加强农产品质量监管,强化生产投入品源头治理,作为保障农产品质量安全的重要措施,有力推动农产品质量不断提升。整体上看,我市农产品质量安全保持在较高水平。1农产品质量安全现状1.1明确组织领导,健全了农产品质量安全工作体系 相似文献
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连云港市年森林采伐限额编制方案的探讨王永昌（连云港市多管局，新浦２２２００２）森林采伐是林业生产中的一个重要环节，具有继往开来的双重任务。依照《森林法》对森林采伐实行限额采伐的原则和林业部《制定年森林采伐限额的规定》，江苏省农林厅提出了《关于编制江苏... 相似文献
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杨小杰 《绿色中国(A版)》2013,(10):61
生态补偿的额度是生态补偿的核心问题之一,文章采用条件价值法,建立逻辑回归模型,对川滇地区农产品的主要市场——成都、重庆等地的消费者进行调查,并对农业生态补偿额度的影响因素进行分析。分析认为消费者对生态环境的评价、食品安全的关注、被访者教育程度、收入水平等指标,对农业生态补偿意愿的影响较大,城市消费者对农产品生态补偿的最大支付意愿,四川云南两省2011年农业生态价值补偿的总额度为579亿元。从补偿额度看,农业生态价值的社会补偿可以取代政府补偿成为主要形式。 相似文献
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《林业机械与木工设备》2006,34(7):17-17
由江苏灌南捷成木业有限公司、南京林业大学和上海捷成白鹤木工机械有限公司三方共同在国内率先开发的连续辊压薄型纤维板生产技术及设备项目，于2006年4月29日在连云港市，通过了江苏省科技厅委托连云港市科技局主持的科技成果鉴定。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(3):279-288
Parameter prediction and the most similar neighbour (MSN) approaches were compared to estimate stand tables from aerial information. The study was based on 50 stands in the south-eastern interior of British Columbia, Canada. In the parametric prediction approach, stand tables were estimated from aerial attributes and three percentile points (16.7, 63 and 97%) of the diameter distribution. In the MSN analysis, stand tables were estimated from the MSN stand that was selected using 13 ground and 22 aerial variables. The accuracy of these approaches was evaluated by comparing the observed and estimated species composition, stand tables and volume per hectare. While the parametric prediction approach is easier and flexible to apply, the MSN approach provided reasonable projections, lower bias and lower root mean square error. 相似文献
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论林业数表模型的研建方法 总被引：4，自引：0，他引：4
从林业数表的性质出发，对建立林业数表模型的全过程进行了系统阐述，对我国今后各类林业数表的编制及林业应用中其它模型的建立具有参考价值。 相似文献
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C. S. Eastaugh 《European Journal of Forest Research》2014,133(5):871-877
The Norway spruce forests of southern Germany and Austria have been at the forefront of forestry research for well over 100 years. The 1960s were a particularly productive period that saw the development of the yield tables of Ernst Assmann and Friedrich Franz, and the form and volume tables of Reinhard Kennel. Both of these works (or the equations that underpin them) are still in common use today. Even though both sets of tables were developed concurrently in the Institute for Growth and Yield at the Munich Forest Research Institute, a cursory examination suggests they are mutually incompatible, as they appear to use different values of form factor. The discrepancy can be explained by examining the differences between the mean tree by basal area (the tree with the quadratic mean diameter) and the mean tree by volume. This difference is shown to be predictable from data contained in the yield tables, and a conversion equation is developed and tested. The results show that the two sets of tables can be considered fully compatible if we accept that the volumetric mean tree is not identical to the mean tree described in the yield tables. 相似文献
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林业调查设计管理系统是依据东北、内蒙古国有重点林区采伐更新作业调查设计规程和黑龙江省森工生产单位的具体实施情况,采用VisualFoxPro数据库管理语言设计而成,其功能是完成伐区调查设计外业数据处理、内业计算和设计表打印。达到规范资源管理,控制源头消耗的目的。 相似文献
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R. Kennel 《European Journal of Forest Research》1971,90(1):117-128
Summary Yield tables to date are constituted solely from mean stand values, and thus give no information concerning diameter and height
distribution. It is schown how, with the aid of diameter distribution functions and normal height curves, yield tables can
be constructed which express stand composition according to diameter and height.
Nach einem Vortrag, gehalten bei der Forstwissenschaftlichen Hochschultagung in München im Oktober 1970. 相似文献
Nach einem Vortrag, gehalten bei der Forstwissenschaftlichen Hochschultagung in München im Oktober 1970. 相似文献
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Growth and yield models were developed for individual tress and stands based on336 temporary plots with 405 stem analysis trees of dahurian larch(Larix gmelinii(Rupr.)Rupr.)plantations throughout Daxing’anling mountains.Several equations were selected using nonlinearregression analysis.Results showed that the Richards equation was the best model for estimatingtree height,stand mean helght and stand dominant height from age; The Power equation was thebest model for prediction tree volume from DBH and tree height; The logarithmic stand volumeequation was good for predicting stand volume from age,mean height,basal area and other standvariables.These models can be used to construct the volume table, the site index table and other for-estry tables for dahurian larch plantations. 相似文献
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IntroductionDahurianlarch(L8risgmeliniiRupr.)isoneofthemostimportanttimberspeciesinChina.AsaresuItofovercuttingforseveraIdecades,thenaturaIDahurianIarchforestresourcesaredecliningrapidly.PIantationsofdahurianIarchhavebecomeanimportantpartofforestpreserveresourcesinDaxing'anMountains.ConsequentIystudyingthegroWthofDahurianlarchandformingtheforesttabfesareofsignrficancetofor-estproduction.ThispaperpresentsinformationongroWthandyieIdmodeIsofDahurianlarchpIantations.MethodsDataof4O5stema… 相似文献
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森林生态具有价值并且可以计量。本文利用贵州水土保持林价值计算模型中林龄和木材市场价格这两个相对变动的因素与价值之间的函数关系,编制了贵州水土保持林主要树种(类型)价值数表和数图。在为水土保持林价值动态变化进行直观、形象显示的同时,更能为贵州水土保持林在今后的评估、征占、置换、流转、转让等林业经济活动提供计量、计价的依据和标准。 相似文献