Results 41 to 50 of about 14,545 (165)
Gaoya dianqi, 2023 文中针对偏远山区输电线路状态监测系统巡检与维修难度较大的现状，提出一种基于LoRa的山区输电线路在线监测方案。根据LoRa无线传输的特性以及山区监测环境，设计了基于GPRS和LoRa的山区输电线路传输架构。利用多目标优化算法优化山区输电线路线型拓扑结构中的LoRa传输分组并平衡传输模块的通信延时与传输能耗。仿真实验结果表明，监测系统数据传输成功率最高可达99%。与国内外现有输电线路状态监测系统相比，所提方案具有高可靠性传输、低成本以及长期监测的优点，适用于山区输电线路监测信号。
刘宇 +4 more
doaj
, 2004 在野外调查和整理资料的基础上 ,调查分析了武夷山自然保护区蕨类植物的区系组成和分布类型。结果表明 :福建武夷山国家级自然保护区共有蕨类植物 4 0科、92属、2 95种和 9变种 2变型 ;主要科为鳞毛蕨科、水龙骨科、金星蕨科、蹄盖蕨科、铁角蕨科、卷柏科、凤尾蕨科 ,主要属为鳞毛蕨属、铁角蕨属、蹄盖蕨属、卷柏属、复叶耳蕨属、凤尾蕨属、瓦韦属。具有10个分布区类型 ,科的分布类型以泛热带分布及其变型为主 ;属以泛热带分布及其变型为最多 ;种类以东亚分布类型和特有成分为主 ,表现出亚热带的特点。与周边 ...
何建源 +4 more
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Integrative Conservation, Volume 4, Issue 4, Page 665-674, December 2025.Using a diagnostic mitochondrial marker gene, we document the presence of furry‐eared dwarf lemurs, a species known from Madagascar's eastern montane rainforests, in several forest fragments across the island's central highlands. These findings raise new questions about when this species colonized these sites, how they tolerate these changing and ...
Marina B. Blanco +27 more
wiley +1 more source
野生动物学报, 2000 成大天鹅自然保护区位于山东半岛最东端的荣成市境内,保护区南、北、东三面濒,临黄海,由众多港湾和浅海滩涂组成,总面积10500hm2,属野生动物及湿地生态系统类型自然保护区。该保护区属暖温带季风型湿润气候区,四季分明,光照充足,雨热同期。年平均气温11.1 ...
闫建国, 肖进才, 张健
doaj
Process of Patch Mosaics of Mature Subtropical Monsoon Evergreen Broadleaved Forest in Hexi, Fujian, China [PDF]
, 2009 群落演替作为植被动态研究的核心内容，是植被生态学研究的热点问题之一。同时季风常绿阔叶林作为南亚热带地区的地带性植被，是南亚热带陆地生态系统的重要组成部分。本研究运用植物群落学和恢复生态学的原理，同时采用时空互代的方法，调查了具有代表性的南亚热带季风常绿阔叶林——福建南靖和溪南亚热带季风常绿阔叶林(南亚热带雨林)。系统地分析了其斑块的组成、生长型、生活型、结构、物种多样性、斑块相似性等，同时还探讨了整个演替系列斑块的恢复潜力及其演替机制。研究结果表明： 1.在林窗形成后的2~30a间 ...
林媚媚
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Integrative Conservation, Volume 4, Issue 4, Page 555-568, December 2025.Brief summary: Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species.
Mylange Dona Kasundi Mekhala Gunasena +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2008 根据金沙江干热河谷元谋地区红土层非常发育的裂隙现象,对该地区典型区土壤裂隙形成的环境和土壤剖面进行了调查,并采样进行相关土壤理化性质测定、粘土矿物X-射线衍射分析以及土壤微形态研究。结果表明:(1)该区旱季丰富的土壤裂隙形成与该区主要分布的第四系古红土层(QS)和第四系元谋组的黄棕色土层(QY)等红土母质特性有密切关系;(2)由于土壤裂隙非常发育,成为了边坡崩塌和直接产生重力侵蚀的成因,加剧了土壤侵蚀过程,导致了土柱和土林等强侵蚀景观形成。研究表明 ...
何毓蓉 +6 more
doaj
Ecological Analysis of Bird Communites in Xiamen(Amoy) Intertidal Zone during Spring. [PDF]
, 1999 Sampling investigation in Xiamen intertidal zone during spring indicated that waders were the main components of intertidal avian communities and 44.4% of the components of intertidal avian communities were composed by shorebirds (charadriiformes).Among ...
宋晓军, 陈小麟
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Advances in Microbial Diversity and Interactions in Kefir [PDF]
Kefir is a fermented dairy beverage produced by using natural microbiota which mainly contains specific microbial communities such as lactic acid bacteria, yeast and acetic acid bacteria, and it has good flavor and health beneficial functions.
LI Shiwei, BAI Ying
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 747-753, December 2025.ABSTRACT Objective Ultrasound‐based fetal growth assessment is an essential part of clinical decision‐making in modern obstetric care. This study aimed to evaluate the impact of maternal and fetal characteristics on the accuracy and precision of sonographic fetal weight estimation.
M. Granfors +4 more
wiley +1 more source