Development and experiment of handheld digitalized and multi-functional forest measurement gun

为了实现森林的数字化、多功能、精准计测,该文研制了一种数字化多功能电子测树枪,该设备以MEMS（micro-electro-mechanical systems）测角传感器、激光测距传感器、电子罗盘等主要硬件为基础,通过测量距离、倾角、磁方位角3个参数,基于三角函数原理,嵌入操作软件,实现了树高测量、林分平均高测量、株数密度测量、角规绕测、任意高度直径测量、基本测量6项功能。并将该设备在河南省、内蒙古等地林场进行了试验,试验结果表明,树高测量精度最高,达99.39%,林分平均高测量精度最低,为94.97%,其他功能精度都在95%以上,可以满足林业外业调查的需要。     

农林院校高级语言程序设计课程分级教学研究

针对高等农林院校学生高级语言程序设计水平不同,实施分级分层次教学可以较好地实现以人为本,以学生为主体的现代教学理念,提高高级语言程序设计课程教学质量,更好地满足农林专业人才的培养和社会需求。农林院校高级语言程序设计课程分级教学需要解决师资素质、教学成本、教学管理和学生心理等主要问题,需要强化以人为本的教学理念,提升师资队伍教学水平;科学选择或编写教材,认真规划设计教学内容;增加教学软硬件等设施投入,提高现代化教学管理水平;增强教师人文关怀意识,强化学生身心健康水平。     

发挥高校图书馆优势 促进勤工俭学和谐发展

探讨了高校大学生在图书馆勤工俭学的意义,指出图书馆管理中存在的问题及解决的方法。     

金沙江干热河谷区生态经济林复合种植模式的生态经济效益研究

通过对金沙江干热河谷生态经济林的3种典型复合种植模式的观测分析，结果表明，3种复合种植模式的经济产投比、土地生产率的关系为：龙眼＋台湾青枣模式〉龙眼＋香叶天竺葵模式〉龙眼单作模式。其中龙眼＋台湾青枣模式最高，2项指标为龙眼单作模式的1．6和3．3倍。龙眼＋香叶天竺葵模式的生物量及其相关指标高于其它2种模式。各模式对局地小气候都有一定的调节作用，其中龙眼＋台湾青枣模式〉龙眼＋香叶天竺葵模式〉龙眼单作模式。从对土壤改良效应来看，龙眼＋香叶天竺葵模式明显优于其它2种模式。综合3种模式的生态经济效益分析，龙眼＋香叶天竺葵模式和龙眼＋台湾青枣模式优于龙眼单作模式。     

关于完善林业贴息贷款政策的探讨

完善林业贴息贷款政策是大力发展林业生产力的必然要求,也是兴林富民改善民生的根本要求。目前,由于种种原因,林业贴息贷款政策在实施过程中尚存在贷款难、期限短、利率高等诸多问题。建议采取相应措施进一步完善林业贴息贷款相关政策,建立起由政府推动、政策性银行主导、商业银行积极参与、社会资本广泛投入的有利于改善生态,改善民生,推动生态文明建设的林业信贷投入机制,激发金融资本、社会资本和广大林业生产经营者投入现代林业建设的活力,释放林地的巨大潜力,建设美丽中国。     

林业两高人才队伍建设研究

加强林业两高人才队伍建设,是应对日益激烈的部门人才竞争和提高林业创新能力的迫切需要,是服务生态林业和民生林业的基础保障。如何加强林业高层次创新人才和高技能人才队伍建设,已成为新形势下事关林业发展全局的重大课题。目前,我国林业两高人才工作还存在体制机制不健全、开发投入严重不足等问题,建议从加强林业两高人才队伍培养、评价、使用和引进,以及提高林业两高人才服务保障机构能力建设等方面着手解决现存的问题。     

同心县农机专业合作组织发展措施与建议

总结了同心县农机专业合作组织发展的现状及采取的主要措施,提出了发展建议,以期为该县农机专业合作组织的发展提供参考。     

Post‐spray effects of an aerial application of fenitrothion on the pine beauty moth,Panolis flammea (Denis & Schiffermüller)

Abstract

Panolis flammea that had survived an aerial spraying programme of fenitrothion were compared in a series of laboratory experiments with moths that had not been within the sprayed area, to assess the effects of sub‐lethal spray application on various life history parameters. Emergence success was not significantly different between the two treatments and the sex ratio in both cases approximated 1:1. The bionomics of moths surviving in the sprayed plots were different in several respects from those taken from unsprayed plots. The former emerged from pupae later, had lower levels of fecundity and a longer pre‐oviposition period. Females from sprayed plots were also heavierthan males and their weight was positively correlated with fecundity, whereas neither of those traits were shown by unsprayed moths. A number of other bionomic traits were not significantly different in sprayed or unsprayed groups. Analysis of the population growth rates of P. flammea from areas of the forest where control was either ineffective or effective, revealed no significant differences. The implications of these results for the population dynamics of P. flammea are discussed.     

浙江省林业信息资源调研及共享对策

调查了浙江省林业系统各类型单位１９９８年订购的农业、林业、生物和环境等学科的专业期刊的种类与数量以及林业光加拥有量和计算机联网状况,统计分析了浙江省林业系统专业期刊的收藏、利用及计算机信息检索的应用情况。浙江省林业系统内,林业专业期刊是重点收藏对象,大中专院校及省部级科研单位是林业信息资源的重点收藏单位。以调查结果为依据,为更充分利用浙江省现有林业信息资源及今后合理的发展提出一些粗浅的看法。     

On the relations between critical behaviour of soil moisture spatio-temporal dynamics and catchment descriptors

When changing from spatially random to spatially connected appearances as conditions become wetter in their seasonal time dynamics, soil moisture spatial patterns show a behaviour similar to phase transition processes. In a previous work, once implemented an ad-hoc methodology, we have demonstrated that such a phase change shows critical point behaviour. Moreover, the value of the critical probability seems to be an intrinsic characteristic of a catchment, being insensitive to renormalization (rescaling), as well as to model parameterization.