Results 31 to 40 of about 18,627 (112)
Shuitu Baochi Xuebao, 2021 为研究北方山区典型人工林水源涵养效应和更新状况，选取吕梁山脉落叶松纯林为研究对象，采用室内浸水法测定不同林分密度下枯落物的持水性能，用RDA冗余度分析法探究林分结构对枯落物厚度和拦蓄功能的相关关系。结果表明：（1）不同密度华北落叶松样地的枯落物厚度为0.84~4.50 cm，蓄积量范围为9.64~24.14 t/hm2，350株/hm2样地蓄积量最大，200株/hm2样地最小。（2）样地最大持水量范围为27.12~62.07 t/hm2，500株/hm2样地持水量最大，150株/hm2样地最小 ...
梁文俊 +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 为探究密度调控措施对华北落叶松（Larix principis-rupprechtii Mayr）人工林枯落物水文效应的影响，以山西太岳山好地方林场35 a生华北落叶松（principis-rupprechtii L.）人工林为研究对象，采用样地调查和室内浸泡法分析了不同密度调控处理下未分解层和半分解层枯落物储量、枯落物持水特征、枯落物持水量和持水速率及其与浸水时间的关系。结果表明：（1）4种密度调控处理枯落物储量由大到小依次为：轻度密度调控处理（LT）＞中度密度调控处理（MT）＞重度密度调控处理（HT）
白英辰 +6 more
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Shuitu Baochi Xuebao, 2022 为探究森林公园植被的水源涵养能力,为森林公园植被配置和经营管理提供依据,研究选取天龙山森林公园6种林分(油松、山杨、刺槐、油松—侧柏混交林、侧柏—油松—杏树混交和灌木林)为研究对象,通过测定林下枯落物厚度、蓄积量、持水性能和干扰度等指标,研究不同林分类型枯落物水文效应。结果表明:(1)所有林分枯落物干扰度范围为无到中度,厚度范围为0.57~2.63 cm,山杨最厚,侧柏—油松—杏混交林最薄;蓄积量范围为7.20~16.30 t/hm2,油松—侧柏混交林最大,侧柏—油松—杏混交林最小。(2 ...
郑淼, 郭毅, 辛如洁, 李庆华
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Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 对青海大通北川河流域山地退耕还林不同配置模式的水文效应进行了研究，结果表明，不同配置模式植冠层截留量、枯枝落叶层的容水量、土壤总持水量随着林分植冠层生物量和枯枝落叶层现存量的增加呈上升趋势，同时，在林分总蓄水量中，土壤持水量所占比值较大（〉97％），而土壤稳渗速率随着土壤总孔隙度的增大而增大。其中：（1）在浅山区，植冠层截留量和枯枝落叶层的容水量以模式D（中国沙棘）最大，分别为1．43mm，1．87mm；土壤持水量和林分总蓄水量以模式C（青杨＋枸杞）最大，分别为327．88mm，329．07mm ...
高国雄 +4 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 为揭示砒砂岩区主要造林树种枯落物持水性能及林下土壤物理性质变化特征，以位于黄土高原北部准格尔旗砒砂岩区6种林分类型为研究对象，运用浸泡法和烘干法，对林下枯落物、土壤（0—50 cm）的持水性能及物理性质进行研究。结果表明：（1）砒砂岩区6种林分类型林下枯落物厚度范围为0.73~2.77 cm，总蓄积量范围为1.47~7.93 t/hm2。枯落物层厚度、总蓄积量大小依次为油松、侧柏、沙棘、柠条锦鸡儿、山杏和撂荒地。枯落物未分解层厚度及其蓄积量均明显大于半分解层。（2）林下枯落物最大持水率范围为149.48%
吴晓光 +6 more
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