红外相机技术在河北雾灵山国家级自然保护区中的应用     

陈彩霞 《绿色科技》2021,(2)

为了充实河北雾灵山自然保护区的野生动物资源本底资料,提高监测能力和监测水平,雾灵山保护区自2015年开始将红外相机技术应用到野生动植物的资源调查和管护中。目前应用红外相机技术发现兽类5目10科14种,鸟类4目6科10种,掌握了区内主要物种猪獾(Arctonyx collaris)、狍(Capreolus)和勺鸡(Pucrasia macrolopha)的日活动节律,补充了保护区的本底调查资料,为保护区进一步开展金钱豹(Panthera pardus)、斑羚(Naemorhedus goral)和鸟类多样性等科学研究奠定了基础,为保护区制定关于野生动物资源的相关管护政策提供了科学依据。  相似文献   

武功山国家森林公园的自然生态化规划设计实践   总被引：4，自引：0，他引：4  

陈亮明  乔丽芳  张毅川 《江苏林业科技》2004,31(5):18-21

森林是重要的自然资源，在开发方式上应十分慎重。以自然生态化规划设计思想作为指导思想，进行了武功山国家森林公园的规划和设计，进行了森林公园可持续规划设计的探索。  相似文献   

健身与竞技     

丁保莲 《信阳农业高等专科学校学报》1996,(1)

本文论述了健身与竞技及其联系、区别、宣传全民健身计划、奥运争光计划.重健身,提高人体素质,显示竟技水平,展示中华民族之神气,促进人类文明进步.  相似文献   

绵羊慢病毒自然感染绵羊的硬化性淋巴细胞性乳腺炎   总被引：8，自引：4，他引：4  

邓普辉  简子健 《中国兽医杂志》1994,20(1):6-8

７头来自新疆南部某绵羊慢病毒（ＯｖＬＶ）感染的羊场的绵羊用于本研究。用琼脂凝胶免疫扩散检查绵羊血清中对绵羊进行性肺炎（ＯＰＰ）病毒（ＯＰＰＶ）的抗体，结果表明有６例呈阳性，１例阴性，抗体效价在３年中呈下降趋势。４例血清学阳性边菜羊和１例阴性和田羊有不同程度的硬化性（纤维性）淋巴细胞性乳腺炎，小叶内有不等的淋巴细胞浸润，导管周围无淋巴滤泡形成，小叶间大量纤维组织增生。７例的肺、脑、关节、血管均无ＯｖＬＶ性特异性病变。从血清学阳性羊的外周血白细胞中未分离到ＯｖＬＶ。  相似文献   

谈新国家标准《机械制图》中一些概念的科学性     

张良汉 《大连水产学院学报》1988,(1)

国家标准机械制图中的概念应体现其科学性,即能反映客观实际和反映其不质属性。本文就新国标中的几个概念,阐明只有建立在科学基础上的术语、概念才能被各方面所接受,才有统一的实践基础。  相似文献   

Scale of heterogeneity of forage production and winter foraging by elk and bison     

L. L. Wallace  M. G. Turner  W. H. Romme  R. V. O'Neill  Yegang Wu 《Landscape Ecology》1995,10(2):75-83

The relationship between fine-scale spatial patterns of forage abundance and the feeding patterns of large ungulates is not well known. We compared these patterns for areas grazed in winter by elk and bison in a sagebrush-grassland landscape in northern Yellowstone National Park. At a fine scale, the spatial distribution of mapped feeding stations in 30 m × 30 m sites was found to be random where there were no large patches devoid of vegetation. In areas similar to the mapped sites, the underlying spatial distribution pattern of biomass was also determined to be random. At a broad scale, forage biomass differed among communities across the northern range but forage quality did not. These results suggest that ungulates are feeding randomly within forage patches (fine scale) but may select feeding sites based upon forage abundance at broader, landscape scales. Contrary to what has been suggested in other systems, ungulates were not overmatching at finer scales.  相似文献   

广州石门国家森林公园野生观赏植物资源调查     

李胜强  崔杰 《广东园林》2015,(3)

通过野外调查和查阅文献资料,得出石门国家森林公园共有野生观赏植物122科267属377种,其中蕨类植物19科23属28种,裸子植物4科5属7种,被子植物99科239属342种。分析了石门国家森林公园野生观赏植物资源的基本特征和用途,并探讨其保护和开发利用。  相似文献   

国家经济安全审计实施路径研究     

曹越  吕亦梅  伍中信 《湖南农业大学学报(自然科学版)》2015,(2):83-88

国家经济安全审计是指审计机关依赖有效的审计制度对被审单位财政、财务收支和经济活动的真实性、合法性和效益性进行审计的基础上，针对经济安全的关键领域，识别、评估、预警和报告危害经济安全的风险，确保财产权益安全完整的一种审计模式。该模式奠定了审计监督在国家经济安全体系中的基础性地位。创新审计模式及审计策略、变革国家审计体制、构建以审计监督为基础的新型国家经济安全体系是国家经济安全审计的三大实施路径。  相似文献   

Fusarium solani Upregulated Sesquiterpene Synthase Expression,Sesquiterpene Production and Allelopathic Activity in Piper betle L.     

Kamrai Woranoot  Rattikarn Buaruang  Kodchakorn Aranyakanon  Kumrop Ratanasut  Anupan Kongbangkerd  Panatda Jannoey  Pranee Nangngam  Chonnanit Choopayak 《水稻科学》2019,26(5):290-299

Activators of sesquiterpene synthase (STS) gene expression and sesquiterpene production in Piper betle L. were examined using quantitative real time PCR and gas chromatography mass spectrometry methods, and the allelopathic activity of untreated and Fusarium solani-treated betel extracts was tested on seed germination and on the shoot and root growth of Thai rice variety PSL2 (Oryza sativa cv. Phitsanulok 2) and three dominant paddy weeds (Eclipta prostrata, Echinochloa crus-galli and Chloris barbata). The results demonstrated that F. solani dramatically upregulated STS expression and productions of β-cubebene, β-caryophyllene and germacrene D sesquiterpene when compared with the untreated control, and that betel extracts had a greater inhibitory effect on weeds than on rice. The effects were more clearly detected on seed germination and root growth than on shoot growth, and they were found to be dose-dependent. It is also noted that F. solani-treated extract had stronger effects than the untreated extract. The species most sensitive to the allelopathic effects was C. barbata, germination of which was completely inhibited even at a dose of 0.1 mg/mL untreated extract. With regards to rice, although betel extract at 1.0 mg/mL showed no inhibition on germination, it affected the elongation of rice roots, in addition to those of the tested weeds. The obtained data suggested that F. solani has potential as an activator of sesquiterpene allelochemical production via STS expression, the latter leading to the treated betel extract having a stronger phytotoxic effect. These results were beneficial in the promotion of natural herbicide production using biotechnology.  相似文献   

鸡公山自然保护区芳香植物资源调查研究     

赵海燕  哈登龙  杨庆华  琚煜熙 《现代农业科技》2011,(19):237-238,244

鸡公山自然保护区内芳香植物资源丰富,经初步调查,共计26科106种,其中裸子植物4科11种,被子植物22科95种。论述了鸡公山自然保护区芳香植物的种类、分布及精油提取部位,对其开发利用提出了建议。  相似文献