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Matching expert range maps with species distribution model predictions

open access: yesConservation Biology, Volume 34, Issue 5, Page 1292-1304, October 2020., 2020
Abstract Species’ range maps based on expert opinion are a critical resource for conservation planning. Expert maps are usually accompanied by species descriptions that specify sources of internal range heterogeneity, such as habitat associations, but these are rarely considered when using expert maps for analyses.
Kumar Mainali   +3 more
wiley   +1 more source

基于地下水位观测的震后孔隙回弹:以2000年冰岛地震为例

open access: yesDizhen xuebao, 2023
以2000年两次MW 6.5冰岛地震为例,利用近场地下水位的同震响应和震后响应约束孔隙模型参数,分析了孔隙回弹效应造成的地表变形大小和时间演化过程。首先利用数值模拟方法获得地震造成的孔隙压力变化和测井水位响应的时间序列,并以测井水位的同震阶跃幅值和震后水位恢复速率分别约束孔隙模型中的Skempton系数和扩散系数;然后基于孔隙弹性模型使用最优孔隙参数模拟震后孔隙回弹效应引起的地壳变形。结果显示:孔隙压力的同震响应控制着孔隙回弹引起的地壳变形,其变形速率与流体扩散系数呈正相关关系 ...
Zhantian Liu   +3 more
doaj   +1 more source

黄土高原旱地苹果园油菜间作对土壤大孔隙结构的影响

open access: yesShuitu Baochi Xuebao, 2021
采用X-ray computed tomography(CT)技术研究了果树行间不同油菜间作密度(CK:清耕;L:低密度间作;M:中密度间作;H:高密度间作)对土壤大孔隙特征参数的影响。结果表明:油菜间作改善了果树行间(0—60 cm)土壤大孔隙特征,各土层的土壤大孔隙数量、大孔隙面积、大孔隙度等参数分别较清耕显著提高(P 1 mm)在各土层间的数目多、差异小,并且在0—30 cm土壤剖面上的成圆率最高。中、高密度油菜间作的土壤大孔隙特征参数均优于清耕及低密度间作,而中密度间作的土壤大孔隙分布更均匀 ...
何娜娜   +4 more
doaj  

桂东南花岗岩丘陵区不同土地利用方式土壤大孔隙特征

open access: yesShuitu Baochi Xuebao, 2021
根据水分穿透曲线和Poiseuille方程,定量研究桂东南花岗岩区6种(次生林、柑橘园、玉米地、杉木林、撂荒地和桉树林)不同土地利用方式土壤大孔隙半径范围、数量及分布情况,分析不同土地利用方式对土壤大孔隙特征的影响。结果表明:(1)不同土地利用方式土壤水分穿透速率存在差异,土壤水分出流速率短时间内可达到稳定状态,柑橘园不同土层之间稳定出流速率变化较大;(2)不同土地利用方式的土壤大孔隙半径为0.4~2.4 mm,主要集中分布在0.4~1.2 mm,均值为0.85 mm,
黄娟   +5 more
doaj  

Effect of Pore Formation on Mechanical Properties and Texture of Honey Peach Slices During Drying Process(水蜜桃片干燥过程中孔隙形成对其力学特性和质构的影响) [PDF]

open access: yesShipin kexue jishu xuebao
The evolution of pore structures during drying plays a critical role in shaping the mechanical and textural properties of fruit and vegetable slices. The impact of pore formation on the mechanical properties and texture of honey peach (Prunus persica ...
ZHANG Bo(张博)   +8 more
doaj   +1 more source

黄土的大孔隙特征和大孔隙流研究

open access: yesShuitu Baochi Xuebao, 2003
介绍了大孔隙流的概念和研究进展,对大孔隙的类型和在水文学上的分类方法进行了分析,并对大孔隙在土壤水分运动中的作用以及理论模式进行了探讨,分析了黄土的大孔隙发育特征和类型。论述了黄土区大孔隙流研究的必要性。
张建丰 林性粹 王文焰
doaj   +2 more sources

黄土高原坝地层状土壤剖面孔隙分布特征

open access: yesShuitu Baochi Xuebao, 2023
以明确自然界中广泛存在的层状结构土壤孔隙分布特征为目的。选黄土高原典型坝地土壤剖面为研究对象,利用CT扫描技术分析耕作层、犁底层、心土层土壤三维结构,探讨层状土孔隙参数随土层结构变化及界面层孔隙特征。结果表明:(1)瘦长型孔隙(孔隙形状系数≤0.2)是各土层土壤孔隙的主要形态。各土层的孔隙参数具有明显差异。耕作层的总孔隙度最高,大孔隙(≥1 mm)分布较多;犁底层孔隙总数量最高,含有较多孤立的小孔隙(≥0.1~0.5 mm)和微小孔隙(≥0.06~0.1 mm),但连通性最差 ...
张佐源   +5 more
doaj  

利用CT扫描技术对太湖地区主要水稻土中大孔隙的研究

open access: yesShuitu Baochi Xuebao, 2007
采集了太湖地区3种主要水稻土(白土、黄泥土和乌栅土)的原状土柱为供试土样,利用CT扫描技术,在不破坏土体结构的前提下,准确地得出了不同深度土壤剖面上各种大孔隙的数量、面积以及分布状况。结果表明,3种水稻土均以表层的大孔隙度最大,在30~40cm处达到一个最低点,再往下又呈波浪形变化。土柱各截面上大孔隙面积的变异系数随着深度的变化与大孔隙度相似,大孔隙度大的层次其变异系数也较大。等效直径越大的孔隙(〉5mm)在土壤不同深度下数量的变化也越大。表层上大直径(〉5mm)的大孔隙较多,在土壤剖面30 ...
吴华山, 陈效民, 陈粲
doaj   +2 more sources

Research Progress on Metal‐Organic Framework Materials in Corrosion‐Resistant and Antimicrobial Metal Functional Coatings

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Metal‐organic frameworks (MOFs) hold significant potential across numerous advanced disciplines due to their exceptional properties, including high specific surface area, tunable porosity, structural diversity, and customizable functionality. Increasing attention has been directed toward employing MOFs in coatings that offer both antimicrobial
Yanchun Zhao   +7 more
wiley   +1 more source

Sustainable Nanocellulose‐Based Materials for Environmental Remediation: Structure–Function Relationships and Applications

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi   +6 more
wiley   +1 more source

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