Results 31 to 40 of about 2,116 (167)

托木尔峰自然保护区台兰河上游森林植被水源涵养功能

open access: yesShuitu Baochi Xuebao, 2017
为定量评价托木尔峰自然保护区森林的水源涵养能力,利用综合蓄水能力法,对台兰河上游雪岭云杉森林生态系统的林冠层截留量(C)、枯落物持水量(L)、土壤层蓄水量(S)及综合水源涵养能力进行估算和分析。结果表明:(1)研究区4样地中,林冠层截留量表现为中海拔云杉林(29.94 mm)>较高海拔云杉林(20.56 mm)>高海拔云杉林(11.72 mm)>低海拔云杉杨树混交林(5.84 mm),而茎流量则与之相反。(2)除中海拔云杉林外,各样地枯枝落叶未分解层平均厚度均大于半分解层;其中 ...
马国飞, 满苏尔·沙比提
doaj  

Gene structure analysis and differentially splicing between Plasmodium yoelii subspecies [PDF]

open access: yes, 2016
啮齿类动物约氏疟原虫(Plasmodiumyoelii)是研究宿主-寄生虫相互关系和疟原虫病理分子基础的一种重要的动物模型。尽管约氏疟原虫YM虫株的基本基因组信息已被测定,在最近也有许多啮齿类动物疟原虫的RNA-seq序列信息已见报道,但不同疟原虫品系或者亚种之间可能存在基因编码区及mRNA转录结构上的差异。构建多种疟原虫品系和亚种的cDNA文库将有助于我们对疟原虫遗传模式和转录组结构的认识。 本研究,我们用约氏疟原虫NSM虫株有或无MQ药物压力的红内期原虫样本构建了两个cDNA文库并对其进行深度测序 ...
刘建文
core  

Comparative Studies on Microbial Community Structure and Production Performance of Jiang-Flavor Daqu in Different Areas of Maotai Town [PDF]

open access: yes, 2023
The microbial community structure and diversity of Jiang-flavor Daqu (TS, WS, WM, MH and DJ) from different areas of Maotai town were analyzed by using the third-generation nanopore sequencing platform, and its physicochemical indexes and characteristic ...
CHEN Shaoyi, LANG Ying, QIU Shuyi, WU Botian, HU Shenglan, ZHOU Hongxiang
core   +1 more source

Sun Bear Ecology and Conservation: Multiscale Habitat Associations in Southeast Asia 马来熊的生态与保护:东南亚地区的多尺度生境关联研究

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry   +5 more
wiley   +1 more source

秦岭火地塘林区不同海拔森林土壤理化性质

open access: yesShuitu Baochi Xuebao, 2011
为了探究海拔高度与土壤理化性质之间的关系,对秦岭火地塘林区不同海拔高度土壤理化性质进行研究。在不同海拔高度设置样地,对土壤进行分层取样,室内测定土壤pH值、有机质、全氮、全磷、全钾、有效氮、有效磷和有效钾含量。结果表明:(1)在不同采样深度下,随着土壤深度增加,除土壤pH值逐渐升高外,有机质、全氮、有效磷和有效钾的含量逐渐降低,其他指标无明显变化规律;(2)土壤pH值、有机质、全氮和有效磷含量与海拔之间有显著的相关关系,土壤pH值随海拔升高先逐渐升高,最高点出现在海拔1 800~2 000m ...
张巧明   +3 more
doaj  

Engineering the Plasmodium berghei genome via CRISPR/Cas9 system [PDF]

open access: yes, 2015
疟疾是由雌性按蚊叮咬而感染疟原虫所引起的虫媒传染病。2013年全球因感染疟疾而死亡的人数达58万,是世界公共卫生的沉重负担,主要易感人群是撒哈拉沙漠以南非洲地区5岁以下免疫力低下的儿童。其中感染恶性疟原虫引起的重症脑型疟最为严重且致死率极高。啮齿动物疟原虫是研究疟原虫与宿主互作的良好模型,伯氏疟原虫ANKA株系(PlasmodiumbergheiANKA)感染小鼠能够产生实验型脑疟症状,已广泛用于恶性疟原虫的致病机理研究。虽然疟原虫的转染技术有二十年的历史了,但由于缺乏高效的基因修饰工具 ...
肖波
core  

Are Galliformes of the High Himalayas Well Protected? Identifying Conservation Priority Areas Using an Assemblage‐Level Approach 高喜马拉雅地区的鸡形目鸟类是否得到了有效保护?利用群落水平方法确定优先保护区域

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.
This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma   +5 more
wiley   +1 more source

海拔高度对雷电流参数的影响

open access: yesDianci bileiqi, 2016
雷电流参数作为雷电理论研究以及工程防护应用的基础,海拔高度变化对其影响不容忽视。为此,采用星载热发射和反射辐射仪全球数字高程模型(ASTER GDEM)数据,填补闪电监测数据中缺乏的海拔信息,分析海拔高度变化对雷电流幅值、闪击频次、闪击密度、陡度等雷电流参数的影响。以贵州为例,提出幅值、陡度随海拔变化的拟合公式的同时,得到的结果:同一海拔高度的正极性雷电流幅值及陡度高于负极性,且随着海拔的上升,差值越大;正极性雷电流幅值、陡度随海拔上升而增大,负极性雷电流幅值、陡度随海拔上升而减小;在一定范围内 ...
吴安坤   +4 more
doaj  

同位素技术在内陆河水循环研究中的应用前景 [PDF]

open access: yes, 2007
介绍了同位素技术的原理,初步探讨并提出了同位素技术应用在气候变化对内陆河流域水循环影响研究中的思路和重点,主要包括水汽来源分析、区域降水线与蒸发线特征分析、氘盈余的分布特征及古气候信息的提取等方面。通过创新气候变化背景下的内陆河流域水循环变化的研究模式 ...
宋郁东, 毛炜峄, 陶辉, 韩俊
core  

Trait‐Based Prediction of Extinction Risk and Conservation Strategy for Traditional Chinese Medicinal Plants in China 基于性状的中药植物灭绝风险预测与保护策略研究

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 150-163, March 2026.
Our research allows us to understand the predictors of extinction risk in traditional Chinese medicinal (TCM) plant species with known threat status, and incorporate this knowledge to predict other TCM plants with unknown conservation status in China so as to improve the overall effectiveness of conservation strategies.
Yuhan Zheng   +4 more
wiley   +1 more source

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