Results 11 to 20 of about 467 (98)
Shuitu Baochi Xuebao, 2022 基于MODIS实际蒸散量(ET)和潜在蒸散量(PET)产品反演作物缺水指数(CWSI),采用多种统计方法研究干旱时空变化特征及其对植被生长的影响。结果表明:多年平均干旱程度由西南向东北逐渐递减,农作物主要以轻旱和中旱为主,草原主要以中旱和重旱为主,荒漠主要以重旱为主;除针叶林和沼泽外,其他植被类型旱情缓解;干旱年内变化特征呈双峰型曲线,且在Day113~Day144干旱最为严重,表现为重旱;各植被类型年内变化特征与全区变化趋势相一致,均呈双峰型曲线;夏旱对植被生长的胁迫作用最强 ...
马梓策 +4 more
doaj
The Resistance Research and Application of Typical Plants for Island Vegetation Restoration [PDF]
, 2016 植被是海岛生态系统的重要组成部分，海岛植被修复对加快恢复受损的海岛生态环境，改善海岛居民的生活生产条件起关键作用。目前，我国大部分海岛生态破坏比较严重，而海岛植被修复工作起步较晚，海岛植被修复技术还不完善，对环境恶劣海岛植被修复依然缺乏良策。本文依托平潭海岛景观生境修复技术研究与示范项目，以木麻黄（Casuarinaequisetifolia）、夹竹桃（Neriumindicum）和台湾相思（Acaciaconfusa）为实验材料，室内人为控制干旱胁迫、根系盐胁迫和叶片盐胁迫的程度及时间 ...
陈慧英
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Effects of exogenous calcium on physiological characteristics and medicinal quality of Platycodon grandiflorus seedlings under drought stress [PDF]
[Objective] Drought stress seriously affects the yield and quality of medicinal plants. This study aims to reveal the physiological mechanism of exogenous calcium in alleviating drought-induced damage in Platycodon grandifloras, which can provide a ...
FU Feifei, OU Xiaobin, SU Yunyun
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Functional Ecology, Volume 40, Issue 3, Page 750-763, March 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies.
Xingyun Liang +11 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 通过盆栽模拟干旱试验，测定了干旱胁迫下玉米根系生长情况和根际土壤中速效N、P、K的含量。结果表明，干旱胁迫抑制了玉米拔节期和抽雄-开花期玉米根系的生长，减弱了玉米根系的吸收能力。干旱胁追下玉米根际NH4^＋-N、NO3^--N、速效P和速效K均发生根际富集现象。其中有效N和速效K含量高于正常供水．而速效P却呈现低于正常供水的趋势。干旱胁追抑制玉米根系生长、减弱根系吸收能力是玉米减产的重要原因。
韩希英, 宋凤斌
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, 2010 选取塔里木河下游3处地下水埋深>6m的监测井位作为研究点,结合典型生态监测断面的地下水位监测数据,分析不同地下水埋深处柽柳的叶绿素荧光特性和光系统的光合活性.结果表明:随着地下水埋深加大和干旱胁迫加剧,柽柳叶片的实际光化学效率、电子传输速率和光化学猝灭等参数普遍下降;非光化学猝灭和调节性能量耗散量子产量等参数显著升高,而最大光量子产量总体处于相对适宜状态.干旱胁迫下柽柳的PSII光合活性随地下水埋深增大而下降,捕获光能的过剩程度加剧,发生光抑制的几率增大,其自身良好的抗旱性和自我调节机制 ...
朱成刚 +3 more
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Identification of WRKY gene family and analysis of drought stress expression in Poncirus polyandra [PDF]
[Objective] Poncirus polyandra, a relative species of citrus, is a type of resistant rootstock widely used in grafting. It is also a plant species with extremely small populations in Yunnan.
RUAN Sunmei +2 more
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Functional Ecology, Volume 39, Issue 11, Page 3255-3268, November 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract The biotic resistance hypothesis (BRH) of Elton posits that diverse communities are more resistant to biological invasions. While the effects of climatic stresses and human disturbances on community invasibility have been extensively studied individually, their combined
Kai Shi, Misbah Naz, Chi Zhang, Hua Shao
wiley +1 more source
Research on the function of ANAC084 in Arabidopsis thaliana in response to the environmental stress [PDF]
, 2016 ANAC084是NAC转录因子家族的一员，其编码一个206个氨基酸的小蛋白。在拟南芥中过表达ANAC084植株出现地上部分变小，莲座叶面积变小、颜色加深，生长周期偏长的表型，但是根的发育并不受影响，进一步的研究表明过表达ANAC084会使拟南芥叶片细胞变小同时使叶片细胞数量大大减少，从而造成植株变小。但是ANAC084-RNAi和ANAC084-SRDX植株在表型上和野生型没有明显区别。通过对ANAC084Pro:gANAC084:GFP:GUS植株进行GFP扫描和GUS染色研究ANAC084的表达模式，
钟小年
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Functional Characterization of AtST39 in Stress Response and AtMPA Mediating Pollen Development [PDF]
, 2012 基因芯片显示番茄细菌性叶斑病原菌Pseudomonassyringaepv.tomatoDC3000(PstDC3000)，干旱、冷和盐等逆境处理及在开花关键基因lfy突变体中都能够上调AtST39（At3g46110）基因表达；AtMPA（At1g05577）在拟南芥单核花粉粒向三核花粉发育的过程中特异性表达。但是AtST39参与胁迫和AtMPA在介导花粉发育的分子机制知之甚少。我们主要对AtST39进行了探索研究，结果如下： （1）NCBI数据库显示YWC基因家族共有185个蛋白家族成员 ...
肖世民
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