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Using Airborne Lidar To Differentiate Cottonwood Trees In A Riparian Area And Refine Riparian Water Use Estimates
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Book Synopsis Using Airborne Lidar to Differentiate Cottonwood Trees in a Riparian Area and Refine Riparian Water Use Estimates by : Alireza Faridhosseini
Download or read book Using Airborne Lidar to Differentiate Cottonwood Trees in a Riparian Area and Refine Riparian Water Use Estimates written by Alireza Faridhosseini and published by . This book was released on 2006 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne lidar (light detecting and ranging) is a useful tool for probing the structure of forest canopies. Such information is not readily available from other remote sensing methods and is essential for modern forest inventories. In this study, small-footprint lidar data were used to estimate biophysical properties of young, mature, and old cottonwood trees in the Upper San Pedro River Basin, Arizona, USA. The lidar data were acquired in June 2003 and 2004, using Optech's 1233 ALTM (Optech Incorporated, Toronto, Canada). Canopy height, crown diameter, stem diameter at breast height (dbh), canopy cover, and mean intensity of return laser pulses from the canopy surface are estimated for the cottonwood trees from lidar data. The lidar estimates show a good degree of correlation with ground-based measurements. This study also demonstrates that other parameters of young, mature, and old cottonwood trees such as height and canopy cover, when derived from lidar, are significantly different (p
Book Synopsis Leaf Area Index in Riparian Forests by : Travis Axe
Download or read book Leaf Area Index in Riparian Forests written by Travis Axe and published by . This book was released on 2018 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote Sensing technology has expanded tremendously over the past few decades and has created value when integrated into environmental concepts and practices. But there is unmet potential for bolstering ecosystem services and creating additional value for society. Impediments such as the cost and complexity of the technology, and the difficulty of readily assimilating it into a decision-making process, must be overcome to facilitate broader use. This study demonstrates the capacity for an emerging and inexpensive remote sensing technology to estimate an important ecological indicator and then discusses the broader implications for societal value. First, we compare the estimation of effective leaf area index (LAI[subscript]e) of heterogeneous riparian forests between two remote sensing methodologies: discrete-return Airborne Laser Scanning (ALS) and airborne structure-from-motion (SfM). LAI[subscript]e is an indispensable component of process-based ecological research and can be associated with a variety of ecosystem services. SfM data acquisition is more frequent and inexpensive compared to ALS, but its capabilities less explored. Two point-cloud data files for each technology were evaluated using respective field-measured reference data. SfM shows promise: a combinational linear regression revealed that the distribution elevation values of upper-canopy point returns and the elevation values representing mid and max stand-level, when paired grey-level co-occurrence matrix (GLCM), can estimate LAI[subscript]E (r2 = 0.62). Although it did not perform as well as ALS, which has more data representing light attenuation behavior (r2 = 0.66), SfM as an alternative methodology for remotely sensing ecological data has demonstrated potential and warrants further investigation. Next, we discuss how remotely sensed ecological information like LAI[subscript]e can create value for society. We provide a primer on the ways in which society values the environment and how these values may be perceived and quantified, and the dynamic behavior that exists between them. We then introduce a major policy tool used in quantifying these values, benefit cost analysis, and why it is useful for framing environmental issues and how remote sensing can contribute to its outcomes. Finally, we review remote sensing applications used in increasing our understanding of society’s interaction with the environment and existing opportunities for value addition.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of Riparian Conditions in the Nooksack River Basin with the Combination of LiDAR, Multi-spectral Imagery and GIS by : Erica M. Capuana
Download or read book Assessment of Riparian Conditions in the Nooksack River Basin with the Combination of LiDAR, Multi-spectral Imagery and GIS written by Erica M. Capuana and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessing Forested Riparian Buffer Ecological Integrity Using Lidar Data by : Leah A. Wasser
Download or read book Assessing Forested Riparian Buffer Ecological Integrity Using Lidar Data written by Leah A. Wasser and published by . This book was released on 2012 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using LiDAR to Estimate the Total Aboveground Live Biomass of Redwood Stands in South Fork Caspar Creek Watershed, Jackson Demonstration State Forest, Mendocino, California by : Hai Hong Vuong
Download or read book Using LiDAR to Estimate the Total Aboveground Live Biomass of Redwood Stands in South Fork Caspar Creek Watershed, Jackson Demonstration State Forest, Mendocino, California written by Hai Hong Vuong and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this study is to develop a method for estimating total aboveground live (ABGL) biomass of redwood stands in South Fork Caspar Creek Watershed (SFCCW), Jackson Demonstration State Forest (JDSF), Mendocino, California using airborne LiDAR data. The study focused on two major species: redwood (Sequoia sempervirens or SESE) and Douglas-fir (Pseudotsuga menziesii or PSME). Specifically, the objective includes developing statistical models for tree diameter at breast height (DBH) on LiDAR-derived height for both species. From twenty-three 0.1-ha plots randomly selected within the study area, field measurements (DBH and tree coordinates) were collected for a total of 429 trees of SESE and PSME. Field measurements were taken for all trees having DBH equal to or greater than 25.4cm. In case of LiDAR-derived tree the height, a minimum height of 15m was used for this study. Software programs TreeVaW and FUSION/LDV were used to develop Canopy Height Models (CHM), from which tree heights were extracted. Based on LiDAR-derived height and ground-based DBH, linear regression models were developed. The linear regression models explained 62.65% of the total variation associated with redwood's DBH and 82.58% of Douglas fir's DBH. The predicted DBH was used to estimate the ABGL biomass using Jenkins' formula (Jenkins et al., 2003A). At a single tree level, the average ABGL biomass of 257 SESE trees using predicted DBH was underestimated by about 10.1% compared with that of ABGL biomass using the ground-based DBH. The average ABGL biomass of 172 PSME trees using predicted DBH was underestimated by about 8.0% compared with that of using ground-based DBH. For both species, there was a statistically significant difference in the mean ABGL-biomass between using predicted DBH and ground-based DBH. In case of the twelve randomly-sampled plots, biomass estimates for both species on the rough terrain ( ≥ 15% slope) were significantly lower and more varied than those on the flat terrain (
Book Synopsis Using LiDAR and Normalized Difference Vegetation Index to Remotely Determine LAI and Percent Canopy Cover at Varying Scales by : Alicia Marie Rutledge Griffin
Download or read book Using LiDAR and Normalized Difference Vegetation Index to Remotely Determine LAI and Percent Canopy Cover at Varying Scales written by Alicia Marie Rutledge Griffin and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of airborne LiDAR (Light Detection and Ranging) as a direct method to evaluate forest canopy parameters is vital in addressing both forest management and ecological concerns. The overall goal of this study was to develop the use of airborne LiDAR in evaluating canopy parameters such as percent canopy cover (PCC) and leaf area index (LAI) for mixed pine and hardwood forests (primarily loblolly pine, Pinus taeda, forests) of the southeastern United States. More specific objectives were to: (1) Develop scanning LiDAR and multispectral imagery methods to estimate PCC and LAI over both hardwood and coniferous forests; (2) investigate whether a LiDAR and normalized difference vegetation index (NDVI) data fusion through linear regression improve estimates of these forest canopy characteristics; (3) generate maps of PCC and LAI for the study region, and (4) compare local scale LiDAR-derived PCC and regional scale MODIS-based PCC and investigate the relationship. Scanning LiDAR data was used to derive local scale PCC estimates, and TreeVaW, a LiDAR software application, was used to locate individual trees to derive an estimate of plot-level PCC. A canopy height model (CHM) was created from the LiDAR dataset and used to determine tree heights per plot. QuickBird multispectral imagery was used to calculate the NDVI for the study area. LiDAR- and NDVI-derived estimates of plot-level PCC and LAI were compared to field observations for 53 plots over 47 square kilometers. Linear regression analysis resulted in models explaining 84% and 78% of the variability associated with PCC and LAI, respectively. For these models to be of use in future studies, LiDAR point density must be 2.5 m. The relationship between regional scale PCC and local scale PCC was investigated by resizing the local scale LiDAR-derived PCC map to lower resolution levels, then determining a regression model relating MODIS data to the local values of PCC. The results from this comparison showed that MODIS PCC data is not very accurate at local scales. The methods discussed in this paper show great potential for improving the speed and accuracy of ecological studies and forest management.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309492432 Total Pages :29 pages Book Rating :4.3/5 (94 download)
Book Synopsis Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space by : National Academies of Sciences, Engineering, and Medicine
Download or read book Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-06-18 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live on a dynamic Earth shaped by both natural processes and the impacts of humans on their environment. It is in our collective interest to observe and understand our planet, and to predict future behavior to the extent possible, in order to effectively manage resources, successfully respond to threats from natural and human-induced environmental change, and capitalize on the opportunities â€" social, economic, security, and more â€" that such knowledge can bring. By continuously monitoring and exploring Earth, developing a deep understanding of its evolving behavior, and characterizing the processes that shape and reshape the environment in which we live, we not only advance knowledge and basic discovery about our planet, but we further develop the foundation upon which benefits to society are built. Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space (National Academies Press, 2018) provides detailed guidance on how relevant federal agencies can ensure that the United States receives the maximum benefit from its investments in Earth observations from space, while operating within realistic cost constraints. This short booklet, designed to be accessible to the general public, provides a summary of the key ideas and recommendations from the full decadal survey report.
Book Synopsis Advances in Airborne Lidar Systems and Data Processing by :
Download or read book Advances in Airborne Lidar Systems and Data Processing written by and published by . This book was released on 2018-05-11 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects the papers in the special issue "Airborne Laser Scanning" in Remote Sensing (Nov. 2016) and several other selected papers published in the same journal in the past few years. Our intention is to reflect recent technological developments and innovative techniques in this field. The book consists of 23 papers in six subject areas: 1) Single photon and Geiger-mode Lidar, 2) Multispectral lidar, 3) Waveform lidar, 4) Registration of point clouds, 5) Trees and terrain, and 6) Building extraction. The book is a valuable resource for scientists, engineers, developers, instructors, and graduate students interested in lidar systems and data processing.
Book Synopsis Forestry Applications of Airborne Laser Scanning by : Matti Maltamo
Download or read book Forestry Applications of Airborne Laser Scanning written by Matti Maltamo and published by Springer Science & Business Media. This book was released on 2014-04-08 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne laser scanning (ALS) has emerged as one of the most promising remote sensing technologies to provide data for research and operational applications in a wide range of disciplines related to management of forest ecosystems. This book provides a comprehensive, state-of-the-art review of the research and application of ALS in a broad range of forest-related disciplines, especially forest inventory and forest ecology. However, this book is more than just a collection of individual contributions – it consists of a well-composed blend of chapters dealing with fundamental methodological issues and contributions reviewing and illustrating the use of ALS within various domains of application. The reviews provide a comprehensive and unique overview of recent research and applications that researchers, students and practitioners in forest remote sensing and forest ecosystem assessment should consider as a useful reference text.
Book Synopsis Riparian Areas by : National Research Council
Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Book Synopsis Remote Sensing of Wetlands by : Ralph W. Tiner
Download or read book Remote Sensing of Wetlands written by Ralph W. Tiner and published by CRC Press. This book was released on 2015-03-23 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effectively Manage Wetland Resources Using the Best Available Remote Sensing TechniquesUtilizing top scientists in the wetland classification and mapping field, Remote Sensing of Wetlands: Applications and Advances covers the rapidly changing landscape of wetlands and describes the latest advances in remote sensing that have taken place over the pa
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309679702 Total Pages :423 pages Book Rating :4.3/5 (96 download)
Book Synopsis Review of the New York City Watershed Protection Program by : National Academies of Sciences, Engineering, and Medicine
Download or read book Review of the New York City Watershed Protection Program written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-12-04 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.
Book Synopsis Wolf Creek Research Basin, Yukon by : Canada. Indian and Northern Affairs Canada
Download or read book Wolf Creek Research Basin, Yukon written by Canada. Indian and Northern Affairs Canada and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wolf Creek Research Basin project was initiated in 1992 to provide a dedicated site to carry out applied research in the Yukon sub-Arctic. The project used an ecosystem approach through contaminants, waste, water, and environment/economy integration. This report describes the Wolf Creek area, the project's objectives, the background to the project's establishment, and research activities in 1992/93, 1993/94, and 1994/95. Research projects included watershed characterization, water quality monitoring, snow and vegetation survey, streamflow monitoring, snowpack monitoring, wind redistribution of snow, snow accumulation and depletion, snowmelt, evapotranspiration, and runoff modelling.
Book Synopsis Ecological Climatology by : Gordon B. Bonan
Download or read book Ecological Climatology written by Gordon B. Bonan and published by Cambridge University Press. This book was released on 2008-09-18 with total page 1209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces an interdisciplinary framework to understand the interaction between terrestrial ecosystems and climate change. It reviews basic meteorological, hydrological and ecological concepts to examine the physical, chemical and biological processes by which terrestrial ecosystems affect and are affected by climate. The textbook is written for advanced undergraduate and graduate students studying ecology, environmental science, atmospheric science and geography. The central argument is that terrestrial ecosystems become important determinants of climate through their cycling of energy, water, chemical elements and trace gases. This coupling between climate and vegetation is explored at spatial scales from plant cells to global vegetation geography and at timescales of near instantaneous to millennia. The text also considers how human alterations to land become important for climate change. This restructured edition, with updated science and references, chapter summaries and review questions, and over 400 illustrations, including many in colour, serves as an essential student guide.
Book Synopsis Decision Forests by : Antonio Criminisi
Download or read book Decision Forests written by Antonio Criminisi and published by Foundations and Trends(r) in C. This book was released on 2012-03 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a unified, efficient model of random decision forests which can be used in a number of applications such as scene recognition from photographs, object recognition in images, automatic diagnosis from radiological scans and document analysis.
Book Synopsis Photosynthesis of Leaf Canopies by : Cornelis Teunis de Wit
Download or read book Photosynthesis of Leaf Canopies written by Cornelis Teunis de Wit and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a procedure to calculate the effect of certain environmental factors on the rate of photo-synthesis imposed mainly geometrical problems, which were solved in such a way that the actual calculation could be carried out by means of a computer. The calculation procedures have been used to study the. relative importance of the variables under various conditions. The results for a standard set of conditions, have been summarized in order to make it possible to estimate the daily photosynthesis at any time and place for a wide range of photosynthesis functions without a computer.
