Results 41 to 50 of about 17,610 (165)
Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants
Functional Ecology, Volume 39, Issue 8, Page 2044-2055, August 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li +10 more
wiley +1 more source
The Historical Roots of Energy Consumption: Does Financial Development Matter?
World Affairs, Volume 188, Issue 3, Fall 2025.ABSTRACT The objective of this study is to investigate how statehood experience affects energy consumption through the advancement of finance and its sub‐sectors. By doing so, the study uses the ordinary and two‐stage least squares methods to analyze data from 111 countries spanning from 2000 to 2018.
Therese E. Zogo +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 通过向土壤中均匀添加不同含量（0，10，20，30，40，50，60 g/kg)凹凸棒土（ATP）来研究其对土壤水分运动及土壤水动力学参数的影响。结果表明，随着ATP含量的增大，土壤入渗速率、累积入渗量减小，Philip公式中的吸渗率S和稳渗率A均减小，Kostiakov公式中入渗系数K减小，经验指数β增大；土壤持水性随着ATP含量的增加而增大，van Genuchten公式中滞留含水率θr减小，饱和含水率θs增大，进气值的倒数α增大，形状系数n减小；利用van ...
吴军虎, 杨 婷
doaj
電気インピーダンス法を用いる青果物および穀物組織の物性評価に関する研究 [PDF]
, 2014 筑波大学University of Tsukuba博士（工学）Doctor of Philosophy in Engineering2013【要旨 ...
108710, 安藤, 泰雅
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Functional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang +10 more
wiley +1 more source
Assessing Closed Hydroponic Subsystems for Batavia Lettuce Growth Under Different Planting Densities
World Water Policy, Volume 11, Issue 2, Page 427-438, May 2025.ABSTRACT Hydroponic systems have the potential to be sustainable and alternative methods for food production that confer advantages of high production and better control of growth. However, only a few studies have focused on leafy vegetable growth in different subsystems and environmental variables.
Demet Çekin +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 为研究崩岗土体因水分变化而发生干湿胀缩的特性，采集福建省安溪县典型崩岗区的红土层土样，通过室内无荷膨胀试验和收缩试验，分析不同初始干密度（1.3，1.4，1.5 g/cm3）、不同初始含水量（15%，20%，25%和30%）下土体的无荷膨胀率和线缩率。结果表明：当含水量较低时，初始干密度越大土体膨胀率也越大；当初始干密度相同时，土壤膨胀率随其初始含水率的增大而减小。当初始含水率相同时，土样膨胀率随其初始干密度的增大而增大。不同处理的土样收缩过程有一定差异，初始含水率高的土样线缩率大 ...
林敬兰
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Shuitu Baochi Xuebao, 2020 以北京地区3年生侧柏幼树为研究对象，采用温室内盆栽试验，设置5个不同土壤含水量水平，采用15N同位素自然丰度法研究不同水分条件下侧柏幼苗的生理活动、生物量分配及氮素吸收和分配情况。结果表明：（1）在水分胁迫下，侧柏单株净光合速率、呼吸速率、蒸腾速率均表现为最低值，随着干旱胁迫解除，含水量增加到正常值，各指标分别增加为原来的4.86，3.74，7.29倍，叶片含水量和叶面积分别增加了24.37％，23.69%；之后当土壤含水量超过正常值时，随着土壤水分含量的进一步增加，各指标略有下降。（2）在水分胁迫下 ...
王鑫 +5 more
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Shuitu Baochi Xuebao, 2022 为探究苔藓覆盖对喀斯特山地土壤剥蚀过程影响的机理,通过野外采集原状土样,结合上方来水冲刷剥蚀试验,分析了不同坡度(5°,20°)与不同土壤含水率(饱和含水率、田间含水率)条件下苔藓盖度与土壤分离能力间的定量关系,解析了坡面流水力特征参数对苔藓覆盖的响应规律。结果表明:在5°和20°坡度下,苔藓覆盖下饱和土壤的土壤剥蚀率分别比田间含水率土壤高33.9%和10.8%。与裸土层相比,苔藓覆盖能够在高土壤含水率条件下有效抑制土壤剥蚀率,且在低坡度下效果更显著 ...
蒋娟 +4 more
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比抵抗映像法を用いた土壌水分の三次元的な時空間変動に関する研究 [PDF]
, 1999 Thesis (Ph. D. in Science)--University of Tsukuba, (A), no.
Zhou Qi You, 周 啓友
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