Results 1 to 10 of about 1,130,778 (144)
Abstract Over the past decade, China's central and municipal governments have consistently supported the development of social credit systems (SCSs). While research has highlighted the Chinese public's high approval and backing of SCSs, their engagement with these digital projects has not been fully explored. Based on 44 semi‐structured interviews, our
Haili Li, Genia Kostka
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为了探讨人类活动和气候变化对黄河流域水沙情势的影响,选取黄河中游典型流域——昕水河流域为研究区域,分析流域1958—2015年水文气象年际变化规律,采用Mann-Kendall检验法和Pettitt检验法对流域径流量、输沙量及含沙量进行趋势分析和突变检验,并分别利用双累积曲线法、回归分析法和弹性系数法对水沙变化的归因进行了对比评价。结果表明:(1)流域多年平均径流量、输沙量和含沙量分别为32.0 mm,1 289.1 t/km2和33.7 kg/m3,年径流量、输沙量和含沙量均呈现显著下降趋势 ...
夏露 +5 more
doaj
利用黑河黑峪口水文站的长系列泥沙和径流实测资料,分别建立了黑河年输沙量和次暴雨输沙量的水沙关系,精度较高;同时,还对这两种水沙关系一些特殊点据的产生原因进行了深入分析.然后应用所建立的水沙关系对1996年非点源污染水质水量监测中存在的泥沙施工影响问题进行了定量修正.
李怀恩, 沈冰, 樊尔兰
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以长江干流寸滩水文站以上流域为研究对象,基于1953-2018年的实测水沙资料,采用线性回归、Mann-Kendall趋势检验和水沙关系曲线分析径流、输沙的时间趋势及其关系变化,并采用双累积曲线法分析水沙变化的驱动因素。结果表明:寸滩站以上流域多年平均径流量为3 425亿m3,多年平均输沙量为3.61亿t;多年平均月径流量为294.8亿m3,多年平均月输沙量为3 013万t,且主要分布在6-10月,分别占年径流泥沙总量的70%和95%以上。趋势分析显示,流域年降雨量和径流量变化趋势不明显 ...
张冠华 +6 more
doaj
ABSTRACT This paper describes and analyzes recharge practices in Bács‐Kiskun County, Hungary, within what can be categorized as the farmer domain. Such locally embedded aquifer recharge practices remain underexplored in Hungary. Current research and funding largely focus on large‐scale Managed Aquifer Recharge (MAR) interventions emphasizing intended ...
Helen Sundberg, Michael Gilek
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Tracing change in the public perception of plants: insights from archives and social media in China
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu +4 more
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通过泰森多边形加权变差系数法研究了黄河中游无定河流域黄土区降水和侵蚀产沙的空间变异规律,并用线性回归分析探究两者空间变异性的相关性。以黄河主要泥沙来源区之-的无定河流域为例,分析了该流域黄土区1959—2015年水土保持措施综合治理前后降水和侵蚀产沙的时空变异规律,所选用的降水特征为汛期降水(Pflood)和汛期降雨侵蚀力(Rflood),用产沙模数(SSY)表示该流域产沙量的多少。结果表明:(1)在水土流失治理前(1959—1970年),该地区降水特征与产沙模数在时间上的增减变化趋势-致 ...
张萍, 郑明国, 蔡强国, 马小晴
doaj
古尔班通古特沙漠南缘固定沙丘上土壤水分与地形-植被因子的关系
土壤水分是干旱和半干旱生态系统格局和过程的主要驱动力,地形-植被因子是小尺度上影响土壤水分的主要因子。以古尔班通古特沙漠南缘北沙窝附近固定沙丘上不同深度的土壤水分(表层0-40 cm、中层40-200 cm、深层200-300 cm和整体0-300 cm)作为研究对象,利用广义线性模型(GLM)、广义加性模型(GAM)和随机森林(RF)模型研究了土壤水分与地形-植被因子之间的关系和变化规律。结果表明:(1)不同深度的土壤水分均呈现一致的单峰分布,不同深度土壤水分的大小顺序为深层>中层>表层 ...
张艳灵 +6 more
doaj
Eimeria saudiensis represents a genus of apicomplexan parasites capable of inducing coccidiosis in Arabian oryx. Our research concentrated on the morphological and molecular investigation of Eimeria spp. in the captive oryx herd in Oman. The therapeutic and management practices employed at the Mammals Breeding Center were reassessed to diminish ...
Khalid Al‐Habsi +7 more
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Devouring the Invaders: The Racial‐Ecological Politics of the Chinese Crayfish Trade in Kenya
ABSTRACT This article examines entanglements of ecology, race, and foodways at Lake Naivasha in Kenya. Nonnative Louisiana red swamp crayfish (Procambarus clarkii), first introduced to Kenya in the 1960s, were once viewed as invasive but are now sought after as a delicacy among Kenya's Chinese community.
Amanda Kaminsky
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