Results 21 to 30 of about 18,023 (111)
Shuitu Baochi Xuebao, 2016 采用野外实地观测与室内浸水法，对白龙江上游5种典型灌丛林（荚蒾、甘肃柳、中华柳、箭竹、绣线菊）林地枯落物的蓄积量、持水量、持水率和吸水速率进行了研究。结果表明：5种典型灌丛林林地枯落物蓄积量大小依次为箭竹林＞甘肃柳林＞荚蒾林＞中华柳林＞绣线菊林。5种灌丛类型枯落物半分解层的持水量均高于未分解层，中华柳未分解层持水量最高，箭竹半分解层持水量最高，绣线菊未分解层和半分解层持水量都是最小，整个枯落层最大持水量大小为中华柳＞箭竹＞荚蒾＞甘肃柳＞绣线菊 ...
齐 瑞 +6 more
doaj
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 通过对高吸水性树脂在不同肥料溶液中吸水倍率和肥料养分吸持量的测定,研究了不同吸水倍率的聚丙烯酰胺型、聚丙烯酸盐型、淀粉接枝型高吸水性树脂与氮、磷、钾肥料的相互影响。结果表明:化学肥料能显著降低高吸水性树脂的吸水倍率,并随肥料浓度的增加,高吸水性树脂吸水倍率显著降低。但不同肥料品种对高吸水性树脂吸水倍率的影响程度不同:供试肥料对高吸水性树脂的影响程度依过磷酸钙、磷酸一铵、硫酸钾、氯化铵、硫酸铵、氯化钾、尿素顺序递减。高吸水性树脂在水中溶胀时,在吸收大量水的同时,也吸持溶解在水中的肥料分子或离子 ...
杜建军 王新爱 廖宗文 苟春林 毋永龙
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Shuitu Baochi Xuebao, 2019 针对花岗岩发育的崩岗土体崩壁失稳等问题，通过单轴抗拉试验，研究了湖北通城地区不同初始含水率的崩岗土体抗拉强度特性。结果表明：初始含水率对崩岗土壤抗拉强度影响明显。土壤抗拉强度特征曲线为单峰型，表土层、红土层和红砂过渡层抗拉特征曲线在含水率WC（24.4%）附近出现抗拉强度峰值，而砂土层在WC（25.8%）出现抗拉强度峰值。崩岗不同层次土壤轴向拉伸长和径向收缩长随初始含水率呈现正相关关系，且土壤轴向拉伸率和径向收缩率与初始含水率拟合出相关系数较高的线性函数关系 ...
冯延云 +3 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
wiley +1 more source
Recovering Critical Elements From Wastewater for Battery Materials: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 为了研究滨海沙地沿海防护林凋落物水源涵养功能，采用野外调查和室内浸泡相结合，对滨海沙地4种典型人工林（木麻黄林、湿地松林、尾巨桉林和纹荚相思林）不同分解阶段的凋落物现存量、持水率、持水量和吸水速率进行研究。结果表明：相同林龄的4种人工林凋落物现存量表现为木麻黄林（19.12 t/hm2） > 湿地松林（17.51 t/hm2） > 尾巨桉林（10.90 t/hm2） > 纹荚相思林（10.13 t/hm2），半分解层凋落物储量占比高于未分解层）4种人工林最大持水率在140.55%~206.47 ...
孟庆权 +5 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Most high‐entropy alloys (HEAs) tailored for contaminant degradation suffer from complex fabrication processes and high‐cost alloy design. Furthermore, low‐cost active elements such as Fe and Mg cannot be readily alloyed into HEAs via conventional routes.
Jiajia Si +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 通过对金沙江干热河谷新银合欢人工林内枯落物层持水特性的试验研究,总结出林内枯落物层的持水特性。结果表明,新银合欢林内枯落物全年凋落总量为7.03 t/hm2,月平均为0.59 t/hm2,枯落物层的厚度为2.14.5cm,其中12月凋落最盛。枯落物的自然含水量月平均为25.27%,最大月出现在8月,与该区域的降水有较好的拟合关系,但存在滞后效应。持水速率在0.5 h内迅速增大,在浸泡48 h后基本达到最大值,在0.5 h内林内枯落物可以吸收1.2 mm的降水 ...
方海东 纪中华 杨艳鲜 拜得珍 廖承飞
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source