Results 1 to 10 of about 1,153 (137)
Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network
Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu +5 more
wiley +1 more source
Historical and contemporary indigenous marine conservation strategies in the North Pacific
Abstract Strategies to reduce, halt, and reverse global declines in marine biodiversity are needed urgently. We reviewed, coded, and synthesized historical and contemporary marine conservation strategies of the Kitasoo/Xai'xais First Nation in British Columbia, Canada to show how their approaches work.
Natalie C. Ban +2 more
wiley +1 more source
探究马尾松人工林降雨特征对降水分配格局的影响,为南亚热带人工林经营管理提供科技支撑。依托广西友谊关森林生态系统国家定位观测研究站降水分配观测场,采用野外定位研究方法,以30年马尾松人工林为研究对象,观测了2018年1—12月的林外降雨、林内透流、干流和冠层截留。结果表明:研究区年降雨总量1 303.6 mm,马尾松林的透流、干流及截留量分别占同期降雨的60.9%,0.4%,38.7%。产生透流和干流的最小雨量分别为0.4,2.2 mm。4个降雨特征指标中(雨量、雨强、历时和2次降水间隔时间 ...
张继辉 +7 more
doaj
通过对滇中3种典型人工林生态系统树冠水文生态规律的研究,人工林生态系统截留量、干流量、穿透降雨量占降雨的百分比分别是:直干桉-黑荆混交林,35.21%,0.65%,64.14%;直干桉人工林,30.10%,0.88%,67.56%;云南松人工林,27.8%,4.64%,69.25%。利用一种新的分析方法,即移动方差分析表明,当降雨量达到70mm时,云南松和直干桉人工林生态系统树冠截留达到最大临界值;当降雨量达到90~95mm时,直干桉-黑荆人工林生态系统树冠截留达到最大临界值 ...
王震洪 段昌群 等
doaj +2 more sources
How Many Floods Have Occurred in China in the Past Decade? A Perspective From Social Media
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
Retrogressive sliding can be observed in groundwater-induced landslides. The major inducing factor of this phenomenon is the fluidization in the down-hillslope and the soil of the bottom-layers.
Chun-Hung Wu +5 more
core
Role of entrapped pore air in rainfall-runoff process in a small headwater catchment underlain by volcanic rock [PDF]
Thesis (Ph. D. in Science)--University of Tsukuba, (A), no. 6479, 2013.3.25Includes bibliographical references (p.
岩上 翔
core
为探究降雨和土地利用对南方赤红壤坡面侵蚀特征的影响,通过天然降雨观测试验,定量分析不同土地利用方式(坡耕地、果园、人工草地和撂荒地)下坡面径流和侵蚀泥沙特征,探讨降雨类型及土地利用对坡面侵蚀产沙的影响以及降雨特征参数与坡面水沙指标间的关系。结果表明:(1)2018年研究区降雨主要集中在5—9月,且每月降雨量主要由一场或几场暴雨及大暴雨组成;(2)坡耕地坡面年径流量和年侵蚀量均最大,分别是果园、人工草地以及撂荒地处理下的3.4,8.0,6.0倍和340.5,1 605.3,1 720.3倍;(2)次降雨下,
李桂芳 +4 more
doaj
ホンシュウ ホクブ ニホンカイガワ ノ ゴウセツチ ニオケル スギ ヒノキ カラマツ ブナ ミズナラ オニグルミ ヘイサリン ノ リンボク ニヨル シュヨウ サンセイ イオン ノ ミカケ シャダンリョウ ト リンボク カラ ノ シュヨウ チュウセイ イオン ノ ミカケ ヨウシュツリョウ [PDF]
【要約】本州北部の日本海側豪雪地に位置する山形大学上名川演習林のスギ,ヒノキ,カラマツ,ブナ,ミズナラ,オニグルミ,6樹種の閉鎖林内において,生育期における降雨及び降下イオン,冬季における降雨・降雪及び降下イオンの,林木によるみかけ遮断量と林木からのみかけ溶出量について調べた.生育期における降雨遮断量(mm)は,高立木密度のヒノキ林では多く,低立木密度のオニグルミ林では少なかった.単位面積当たりの雨水遮断量は,同一樹種内でも,カラマツ,ブナ,オニグルミは,胸高断面積の小さい林木では多く ...
下井田 領子 +4 more
core +1 more source
为研究坝上地区人工林土壤水势动态,以结缕草(Zoysia japonica)为对照,选取坝上地区典型人工林小叶杨(Populus simonii Carr.)和樟子松(Pinus sylvestris var. mongolica),研究其生长季不同时间、空间土壤水势和变异系数及晴天和降雨下土壤水势变化。结果表明:(1)人工林和草地土壤水势变化趋势相同,在生长季前期和后期土壤水势较高,中期土壤水势进入波动下降期,但不同植被进入波动期时间不同,樟子松晚于小叶杨和结缕草。小叶杨、樟子松 ...
张益 +6 more
doaj

