Results 41 to 50 of about 14,418 (158)

Reoccurrence of Dust Storms in South Asia and Their Implications for Vegetation Health 南亚沙尘暴的再次出现及其对植被健康的影响

open access: yesIntegrative 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

閉鎖性水域での競争的漁業と生態的環境及び地域(局所)的TAC 【論文】 [PDF]

open access: yes, 2012
Departmental Bulletin PaperA basic model of the mathematical theory of regional(or local) populations in a particular water area—that is, a semi-enclosed water area which is affected by an exogenous change to its regional (or local) ecological ...
鈴木, 康夫
core  

Generalist predators function as pest specialists: Examining diet composition of spiders and ladybeetles across rice crop stages

open access: yesJournal of Applied Ecology, Volume 62, Issue 8, Page 1889-1901, August 2025.
By quantifying the diet composition of GAPs over crop stages, farm types and years, this study reveals that generalist predators have potential to produce a stable, predictable top‐down effect on pests in rice agro‐ecosystems. Therefore, promoting the field densities of ubiquitous generalist predators will likely enhance pest management and support ...
Gen‐Chang Hsu   +4 more
wiley   +1 more source

The need for carbon finance schemes to tackle overexploitation of tropical forest wildlife

open access: yesConservation Biology, Volume 39, Issue 1, February 2025.
Abstract Defaunation of tropical forests, particularly from unsustainable hunting, has diminished populations of key seed dispersers for many tree species, driving shifts in forest community composition toward small‐fruited or wind‐dispersed trees with low wood density. Such shifts can reduce aboveground biomass, prompting calls for overexploitation to
Caroline E. Milson   +3 more
wiley   +1 more source

基于Hydrus-3D模型的再生水涌泉根灌模拟及布置参数预测

open access: yesShuitu Baochi Xuebao, 2019
为了探寻再生水果树涌泉根灌条件下灌水器的最优布设埋深和间距,以饱和―非饱和土壤水分运动理论为依据,选取了典型研究区一年和多年生桃树,利用Hydrus-3D模型对再生水涌泉根灌土壤水分入渗过程进行数值模拟,并将模拟结果与田间试验实测结果进行对比验证,同时预测了双源涌泉根灌灌水器的最优布置参数。结果表明,Hydrus-3D模型对再生水涌泉根灌湿润锋运移距离以及灌水结束后不同时刻含水量分布的模拟值和实测值之间决定系数R2均大于临界决定系数,均方根误差RMSE分别小于1.5和0.05,且F检验P值均在0 ...
樊向阳   +6 more
doaj  

REMOVAL MECHANISM OF NITROGEN AND PHOSPHORUS IN SECONDARY EFFLUENT IN A SMALL CHANNEL [PDF]

open access: yes, 2018
Today, pollution sources such as urban areas and agricultural lands cause eutrophication. The main cause of eutrophication is excessively supplied nitrogen and phosphorus. They cause landscape change, create offensive smells and ecological change.
小川 智也
core   +1 more source

Chronotopes of Transnational Literacies: How Youth Live and Imagine Social Worlds in their Digital Media Practices

open access: yesReading Research Quarterly, Volume 60, Issue 1, January/February/March 2025.
In this study, we examine how social connectedness is semiotically constructed through time‐space framing in two youths’ transnational communication. The youths’ narratives show how they positioned themselves in proximity with their peers within particular contexts that supported their actions and emotions, or ways of thinking and feeling.
Wan Shun Eva Lam, Jue Wu
wiley   +1 more source

污水灌溉对苜蓿生长下土壤部分理化性质的影响

open access: yesShuitu Baochi Xuebao, 2011
通过盆栽试验研究了污水、再生水等不同灌溉水质对苜蓿三次刈割后土壤部分理化性质的影响。结果表明:相对于清水灌溉,污水及再生水处理能显著降低土壤pH值,增加EC值。第二次刈割时污水、再生水处理与清水相比土壤无机氮含量分别增加了63.59%和35.02%,第三次刈割时分别增加了82.18%和30.72%。与清水灌溉相比,污灌处理土壤Cd含量在三次刈割中分别增加了33%,117.65%和138.89%,再生水灌溉处理在三次刈割中分别增加了13.33%,64.71%和61.11%。根据《土壤环境质量标准 ...
张志华, 陈为峰, 石岳峰
doaj  

Eco-treatment Engineering of Sewage Forest Land in Xiamen [PDF]

open access: yes, 2006
文章介绍了厦门市狐尾山原生生活污水林地生态处理工程依循“污水-土壤-植物”资源再生机制,提出了“截流井+氧化塘(调节池)+污水动力输送、管网投配+林地+城市景观林地 ...
卢昌义, 胡宏友, 谢海生
core  

Strategic Security Research on Diversification of Water Supply System in Xiamen [PDF]

open access: yes, 2015
根据厦门市水资源面临的问题和约束力的存在,确定了测量水资源约束力指标的方法,提出了建设异地大型储备水库、多水源供水互补格局、北水南调、中水回用、海水淡化、雨水资源再生利用、水务一体化管理、构建供水安全保障体系等途径保障厦门的远景规划供水安全。The problems of water resources in Xiamen were pointed out, the existence of water resources constraint force was identified, and the
王吉苹, 薛雄志
core  

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