Results 11 to 20 of about 473,794 (151)
本实用新型公开了一种测量雨量的装置,包括设置于外壳内的漏斗、进水管、储水室及水面位移测量装置,漏斗下端设有进水管,进水管连接有储水室,储水室内设有水面位移测量装置,在所述漏斗与进水管之间设有进水电磁阀,在所述储水室上设有放水电磁阀,进水电磁阀、放水电磁阀连接有电源。由于该装置中设有进水电磁阀和放水电磁阀,即使在降雨的过程中放水,降雨量也不会有任何误差,保证了在大雨、暴雨时测量准确 ...
李世海, 王兴昆, 孟祥跃
core +2 more sources
降雨是边坡失稳主要诱发因素之一。降雨入渗会增加岩土体容重同时降低土体强度,是典型的连续-非连续水力耦合过程。本研究基于连续-非连续单元法,引入应力场和渗流场数值耦合算法,根据兰营地区边坡地质条件建立高精度三维地质灾害模型,考虑不同降雨工况,对边坡稳定性进行分析,并与监测数据展开对比验证模型可靠性。研究表明,该处边坡在暴雨等恶劣天气情况下破裂度提升,安全系数降低,存在一定失稳危险 ...
牛犇, 冯春, 张一鸣
core +2 more sources
ABSTRACT Bengaluru, a primary metropolitan centre in India, is currently grappling with the dual crises of urban flooding and severe groundwater depletion. These challenges are driven by rapid urbanization, which has seen built‐up areas increase from 42% to 86% over two decades, resulting in a dramatic loss of vegetation and wetlands.
S. Biswas, S. V. B. Patel, B. Maheshwari
wiley +1 more source
水土流失已成为我国主要的生态环境问题之一。基于安徽大别山区江子河小流域2012-2019年自然降雨径流泥沙观测资料,探讨雨型对不同农作物措施坡面产流产沙的影响,采用随机森林算法分析降雨因子与水沙之间的关系。结果表明,在不同场次降雨中,径流量、土壤流失量随降雨场次变化规律较一致,红薯措施产流量及土壤流失量较大,茶叶措施最小。降雨分为3类:A型降雨(低频率、长历时、大雨量、高雨强)、B型降雨(高频率、短历时、小雨量、低雨强)、C型降雨(较低频率、较长历时、中等雨量、较高雨强),对产流产沙的影响表现为A型 ...
张嘉懿 +3 more
doaj
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
贵州省黔南区不同侵蚀性雨型条件下生物措施对坡面产流产沙的响应
为探讨不同降雨条件下的生物措施对坡面产流产沙特征的影响,分析了贵州省黔南自治州云雾水土保持监测站2014—2017年4年6个小区104次侵蚀性降雨下的实测产流产沙数据。结果表明:(1)侵蚀性降雨按历时、雨强和雨量可分为3类,包括A雨型(中历时、中雨强、中雨量),B雨型(长历时、小雨强、大雨量),C雨型(短历时、大雨强、小雨量)。C雨型为引起区域水土流失的主要雨型。(2)较坡耕地而言,A雨型和C雨型条件下减流量均呈水平阶整地+经果林 > 水保林 > 人工草地 > 自然恢复草地 > 经果林的趋势 ...
黄凯 +5 more
doaj
Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species. This review emphasizes the potential of biotechnological approaches to enhance conservation accuracy and ...
Mylange Dona Kasundi Mekhala Gunasena +2 more
wiley +1 more source
ABSTRACT With most unemployed youth residing in rural areas of South Africa, incentivising youth participation in smallholder farming can help address the increasing youth unemployment crisis. The study integrated the theory of planned behavior and the sustainable livelihood framework to investigate the factors influencing rural youth participation in ...
Humbulani Portia Rambuda +2 more
wiley +1 more source
Clip Voice: Misogyny and the Renegotiation of a Gendered Vocal Style in Chinese Digital Discourse
ABSTRACT The participatory culture of social media allows women's voices to be heard but also parodied and policed. On Chinese social media platforms, where performers rapidly adopt and transform vocal trends for engagement, discourse on gendered vocal styles has proliferated.
Zichuan Yu, Rebecca Lurie Starr
wiley +1 more source
基于定西市安家沟流域2014-2016年连续3年侵蚀性降雨产流产沙资料,研究了植被类型和降雨对坡面侵蚀产沙的影响。结果表明,侵蚀性降雨可分为3类:A雨型(短历时、中高雨强)、B雨型(中雨量、小雨强)和C雨型(大雨量、小雨强),产流产沙频次为B雨型 > C雨型 > A雨型。径流系数油松林(6.915%~9.379%)、小麦地(5.838%~9.034%)和苜蓿地(6.610%~9.671%)分别是冰草地(2.724%~5.246%)的1.7~2.5倍,是沙棘林(2.296%~3.863%)的2~3倍 ...
朱燕琴, 赵志斌, 齐广平
doaj

