Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA最新文献

Experiments on Vegetative Flow Resistance for Erosion Control using Grass Species from the Caribbean Region 加勒比地区草本植物抗侵蚀性试验研究

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 2023-04-13 DOI: 10.13031/soil.23052

W. Silva-Araya, Enrique Rodríguez-Quiñones

{"title":"Experiments on Vegetative Flow Resistance for Erosion Control using Grass Species from the Caribbean Region","authors":"W. Silva-Araya, Enrique Rodríguez-Quiñones","doi":"10.13031/soil.23052","DOIUrl":"https://doi.org/10.13031/soil.23052","url":null,"abstract":"Vegetative channels convey runoff effectively, prevent flooding, protect soil against erosion, avoid the formation of gullies, maintain adequate water quality, and reduce the generation of sediments. The degree of retardance as a measure of the drag force on the vegetation cover is a crucial parameter for determining resistance to water flow in these channels. This research developed a new procedure to assess Manning’s coefficient and retardance index for vegetation using four Caribbean Area grass species: Bahía Grass (Paspalum notatum), Zoysia Grass (Zoysia sp.), Pangola Grass (Digitaria eriantha), and Bermuda Grass (Cynodon dactylon). The USDA-NRCS Caribbean Area identified 16 species as vegetative lining for waterways and proposed a classification according to the degree of vegetative retardance. The category for these species was developed for use in the Western Gulf Region and required validation for the Caribbean region. A modified universal log law fitted the velocity distributions above the vegetative lining in the experiments. The energy equation for a gradually varied flow, the momentum equation, and Manning’s equation provided a solution for Manning’s coefficient. The procedure allowed us to assign a degree of retardance to the species obtained by comparing Manning’s coefficients with those from USDA-NRCS. Results show that retardance degrees published in the Puerto Rico Erosion and Sedimentation Control Handbook for Developing Areas apply to the species tested in this project. This research identified a new retardance degree for Pangola grass when the plant height is less than 0.15 m. The experimental values for Manning’s coefficient are also recommended for use in overland flow conditions.","PeriodicalId":214971,"journal":{"name":"Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121516133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effects of Natural Disturbance in Puerto Rico: Forests, Infrastructure and Environmental Implications 波多黎各自然干扰的影响：森林、基础设施和环境影响

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 2023-01-01 DOI: 10.13031/soil.23700

Grizelle González

{"title":"The Effects of Natural Disturbance in Puerto Rico: Forests, Infrastructure and Environmental Implications","authors":"Grizelle González","doi":"10.13031/soil.23700","DOIUrl":"https://doi.org/10.13031/soil.23700","url":null,"abstract":"Functioning ecosystems respond to disturbance through natural processes of vegetation recovery, soil development, shifts in forest structure and composition, and adapting plant and animal populations. In the Anthropocene, a mix of natural and anthropogenic drivers influence our landscapes and the ecological services they provide. Long term studies of forest ecosystem function in the Luquillo Experimental Forest in Puerto Rico provide insights into the role of natural disturbances and ecosystem services, while recent high intensity hurricane disturbances provide insight into the interactions of downed trees, landslides, and critical infrastructure. Warming climate will increase the intensity of hurricanes, with greater wind and rain effects occurring from more powerful and slow-moving hurricanes. The combination of learning from recent events and understanding the long-term cycles of natural disturbance and forest recovery provides an opportunity to think about future environmental implications of disturbance. Experimental studies and monitoring of disturbance events can provide new information to manage forests for sustainable benefits in light of climate change.","PeriodicalId":214971,"journal":{"name":"Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147917470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nursery Automated Irrigation for Optimizing Water Efficiency: A Case Study in Cataño Puerto Rico 苗圃自动灌溉优化用水效率:在Cataño波多黎各的案例研究

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.23535

Yiyang Chen, Gian L Gerena, Roger A Leyba, Daniela M. Markazi

引用次数: 0

Regional Variability of Topographic Index and Machine Learning Model Applications for Prediction of Ephemeral Gullies 地形指数的区域变异性及机器学习模型在短暂沟壑预测中的应用

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.2023037

C. Conoscenti, A. Sheshukov

引用次数: 0

The State of Puerto Rico's Climate - Basis for a New Generation of Resilient Communities and Infrastructure 波多黎各的气候状况——新一代弹性社区和基础设施的基础

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.23509

Ernesto Diaz

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ENSO-Induced Climate Variability Impacts on Erosivity in the United States enso诱导的气候变率对美国侵蚀力的影响

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.2023062

Ryan P. McGehee, Sarmistha Singh, D. Flanagan, P. Srivastava

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Flat Residue Loss by Wind for Different Crop Types: Field Experiments 不同作物类型的风对扁平残茬的损失:田间试验

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.2023015

Jiaqiong Zhang, L. Wagner, Katie Talley

引用次数: 0

How Large Can Gullies Be? 沟壑能有多大?

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.23017

J. le Roux, Lefa Morake, R. L. Anderson, B. van der Waal, D. Hedding

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The Effect of Cover Crops on Water Quality at a Watershed Scale 覆盖作物对流域水质的影响

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.23090

S. Armstrong, Michael D. Ruffatti

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Extreme Rainstorms and Landslides in the Panama Canal Watershed – Lessons Learned from the Storms of December, 2010 巴拿马运河流域的极端暴雨和山体滑坡——从2010年12月的风暴中吸取的教训

Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA Pub Date : 1900-01-01 DOI: 10.13031/soil.23600

R. Stallard

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