Understanding how soil fertility changes due to environmental conditions and stand-age-dependent for-est attributes is important for local-scale forest restoration.We evaluated the effects of stand-age-dependent forest attributes (plant community composit
The distribution of many plant species has been shaped by climate changes,and their current phenotypic and genetic variability reflect microclimatically suitable habi-tats.This study relates contemporary climate to variability patterns of phenotypic trait
Airborne laser scanning (ALS) has been widely applied to estimate tree and forest attributes,but it can also drive the segmentation of forest areas.Clustering algorithms are the dominant technique in segmentation but spatial opti-mization using exact meth
蜂胶是意大利蜜蜂或无刺蜂的工蜂在采集树木表面的树脂或分泌物的同时将其与自身上颚腺和蜡腺分泌物充分混合加工,而形成的一种不规则不透明且具有芳香味的纯天然褐色胶状固体物质.其有效成分具备抗菌、抗氧化等的生物学活性,应用领域为广泛.系统综述了蜂胶在医药保健品、疾病防御、食品保鲜、日用化工产品、植物保护、畜禽水产的饲料、农业和畜牧业相关疾病控制等方面的应用,还总结了蜂胶的利用形式,如蜂胶浸膏、蜂胶合片和蜂胶软胶囊等,为广大蜂农和蜂业工作者对蜂胶产品的利用与开发提供参考.
Both climate and land-use changes,including the introduction and spread of allochthonous species,are forecast to affect forest ecosystems.Accordingly,forests will be affected in terms of species composition as well as their soil chemical and biological ch
1牛髓膏子rn组方:黄精膏150 g,地黄膏90 g,天门冬膏30 g,牛骨油60 g.rn用法:将黄精膏、地黄膏、天门冬膏、牛骨油同放锅,煮沸收膏即成.每次10 mL,每日3次,空腹温黄酒适量送服.rn功用:补益精髓,强壮筋骨,延年益寿.rn2参杞膏rn组方:党参1 000g,枸杞500g,炼蜜250g.rn用法:将诸药择净,研细,水煎3次,3液合并,文火浓缩,加入蜂蜜适量煮沸收膏即成.每次20 mL,每日3次,温开水适量送服.
The biodiversity of natural or semi-natural native,old oak woodlands have high conservation impor-tance,especially in landscapes of monocultural forest plan-tations and arable fields.With a wider variety of microhabi-tats and foraging sources,such old oak
Investment in silvicultural techniques is notice-ably lacking,especially in breeding programs for non-con-ventional wood species.Studying genotype × environment interaction (G × E) is essential to the development of breed-ing programs.Thus,this study aime
蜜蜂产业是现代农业的一个重要组成部分.它在农业增产、农民增收、环境保护等方面起到了较大的作用,是维持生态平衡不可缺少的链环.蜜蜂授粉对提高农作物产量和质量,具有十分重要的作用,发展蜜蜂产业还可为人类提供丰富的蜂产品.
近两年在本所定地饲养西方蜜蜂,由于周围饲养的西方蜜蜂数量较少,以及蜜源结构发生变化,造成西方蜜蜂白垩病和大、小蜂螨等病虫害防治也出现了变化.为了弄清准确的防治时间和治疗效果,摸索适合当地优质高产的饲养技术.经过长期防治实验,总结了一些方法,供同行参考.