Results 21 to 30 of about 2,929 (158)
Shuitu Baochi Xuebao, 2003 香港地区每年均有一定数量的滑坡灾害发生,诱发滑坡灾害的主要因子是强降水,即暴雨.暴雨过程中,降水强度的时空分布存在一定差异性,这种降水强度的时空与滑坡灾害的时空分布存在一定的联系.以香港地区1992年5月8日暴雨为例,以30 min为时间间隔,分析了暴雨中心时空变动与滑坡事件时空分布及出现频率之间的关系,发现空间上滑坡均出现在暴雨中心或暴雨中心的边沿地区;时间上滑坡事件出现在暴雨中心出现或上一阶段时间内;并且降水的强度与滑坡的出现频率也有一定关系.
李军, 周成虎
doaj +2 more sources
Shuitu Baochi Xuebao, 2021 2019年8月10日6时至12日6时，受台风"利奇马"影响，山东淄博、东营、潍坊等地区发生特大暴雨天气，造成了严重的水土流失灾害。暴雨发生后，水利部水土保持监测中心组织调查人员，运用现代技术手段对暴雨中心典型小流域进行了系统、全面的水土保持实地调查。结果表明：（1）本次特大暴雨降雨量为570.6 mm，最大24 h降雨507.6 mm，均超过历史记录；（2）本次暴雨造成严重水土流失灾害，典型小流域水蚀模数达9 741 t/km2，是多年平均值的2.4倍，梯田损毁率达5.96%，河道淤积厚度达10~30 ...
林祚顶 +6 more
doaj
Study on Nutrient Dynamics and Ecological Process in a Subtropical Reservoir [PDF]
, 2016 由于梯级电站大量开发，河流湖库化和富营养化问题突出，但有关库区营养盐动态和生态过程缺乏系统性研究。本文以九龙江北溪西陂水库为研究对象，开展入库河流和水库的综合观测，从时、日、月、季节多个时间尺度捕捉营养盐和生态参数的变化，分析水库营养盐和浮游植物的季节转换模式、暴雨事件生态响应过程和机制，总结季风气候条件下亚热带不同水库营养盐和生态特征。主要研究结论如下： （1）西陂水库营养盐在干湿季节过渡期，NH4-N、DRP的相对富集和水温升高导致叶绿素a出现峰值。水库汇水与水面面积比值高达7285 ...
莫琼利
core
Study on the Suitable Area of Ratoon Rice in China Under Climate Change
Ecology and Evolution, Volume 15, Issue 12, December 2025.In view of this, we speculate that the autumn heat conditions in the northern Qinling–Huaihe Line will still limit the northward advance of ratoon rice. With future climate change, a small part of the highly‐suitable area for ratoon rice in the southern Qinling–Huaihe Line will transform into a double‐cropping rice area, while most of the lowly ...
Wei Luo +7 more
wiley +1 more source
Riverine Nutrients Export and its Biogeochemical Behavior in the Jiulong Estuary under Subtropical Storm Events [PDF]
, 2015 由于气候变化（极端暴雨事件增加）和人类活动干扰（人为氮磷输入增加），亚热带流域-近海生物地球化学过程与通量受到显著影响。本研究选取九龙江流域-河口系统作为整体研究对象，以九龙江河流-河口混合区作为重点研究对象，开展常态和暴雨事件河流-河口营养盐（氮、磷、硅）和悬浮颗粒物的综合观测，分析暴雨事件河流营养盐输出过程、通量及主要控制因素，探讨河口营养盐生地化行为对河流输入的响应关系。主要研究结论如下： （1）常态下九龙江两大干流（北溪、西溪）的营养盐氮磷时空分布受污染分布和类型、大坝滞留和水文条件的综合影响 ...
吴殷琪
core
Integrative Conservation, Volume 4, Issue 3, Page 362-380, September 2025.Occurrences of dust storms and long‐distance movement of dust across landscapes is constantly increasing in south Asia. This dust is expected to have profound impact on vegetation health and sustainability as dust may contribute to nutrient budgets of the forest ecosystems, while it could impart various stresses to the plants.
Shree P. Pandey +2 more
wiley +1 more source
How Many Floods Have Occurred in China in the Past Decade? A Perspective From Social Media
Earth's Future, Volume 13, Issue 4, April 2025.Abstract Global climate change has led to frequent and widespread flood disasters in China. Traditional flood disaster investigations mainly focus on major flood events, and small‐scale flood events are often overlooked. This study utilized the Sina Weibo social media platform to detect flood events in 370 cities in China from 2012 to 2023.
D. Shen +5 more
wiley +1 more source
Comparison of the upper northeasterly flow with and without heavy rain(高空偏北大风与有无暴雨的对比分析)
Zhejiang Daxue xuebao. Lixue ban, 2002 利用常规观测资料对1991～1996年江淮地区梅雨期的高、低层流场进行合成诊断分析.比较了高空偏北大风下有无暴雨在天气形势、物理量特征、三维流场方面的差异.文中一些分析结果可供暴雨预报参考.
DINGHua-jun(丁华君) +1 more
doaj +1 more source
Optimization of Local Government Network Public Opinion Management Countermeasures ——An Empirical Analysis Based on Longyan [PDF]
, 2016 近年来，我国互联网发展迅速。截止2015年12月底，我国网民数达6.88亿，互联网普及率为50.3%。由于网络的便捷性、匿名性等特点，使得越来越多的人们通过网络参与社会活动，进行利益诉求。网络舆情已成为地方政府了解社情民意的重要渠道，成为社会舆情的晴雨表。如何有效进行网络舆情管理，已成为各级政府面临重要课题。 随着网民数量增多、网络信息膨胀，仅依靠政府单方面对网络舆情管理，显然已经不能适应新时代要求。本文以治理理论为视角，结合龙岩市网络舆情管理经验，通过应对连城7.22暴雨事件网络舆情 ...
张迪隆
core
International Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.This paper introduces a cost‐effective prompt optimization strategy for ancient Chinese word segmentation using large language models, aiming to mitigate the substantial computational resources and training expenses of fine‐tuning. We developed two knowledge‐enhanced frameworks, a General Knowledge Prompt framework and a Domain‐Specific Knowledge ...
Meng-Tian Tang +2 more
wiley +1 more source