نتایج جستجو برای: landsat

تعداد نتایج: 9827  

2017
Suraj Upadhaya

OF THESIS Use of Landsat Data to Characterize Burn Severity, Forest Structure and Invasion by Paulownia (Paulownia Tomentosa) in an Eastern Deciduous Forest, Kentucky Landsat imagery has been used successfully to assess burn severity and monitor postfire forest structure in a variety of ecosystems, but to date there are few documented studies on its application in the eastern deciduous forests ...

Journal: :Remote Sensing 2014
Tetsuji Ota Oumer S. Ahmed Steven E. Franklin Michael A. Wulder Tsuyoshi Kajisa Nobuya Mizoue Shigejiro Yoshida Gen Takao Yasumasa Hirata Naoyuki Furuya Takio Sano Sokh Heng Ma Vuthy

In this study, we test and demonstrate the utility of disturbance and recovery information derived from annual Landsat time series to predict current forest vertical structure (as compared to the more common approaches, that consider a sample of airborne Lidar and single-date Landsat derived variables). Mean Canopy Height (MCH) was estimated separately using single date, time series, and the co...

Journal: :Remote Sensing 2012
Oliver Cartus Josef Kellndorfer Markus Rombach Wayne S. Walker

We have investigated for forest plantations in Chile the stand-level retrieval of canopy height (CH) and growing stock volume (GSV) using Airborne Laser Scanner (ALS), ALOS PALSAR and Landsat. In a two-stage up-scaling approach, ensemble regression tree models (randomForest) were used to relate a suite of ALS canopy structure indices to stand-level in situ measurements of CH and GSV for 319 sta...

Journal: :Carbon Balance and Management 2007
Christopher Potter Peggy Gross Vanessa Genovese Marie-Louise Smith

BACKGROUND A simulation model that relies on satellite observations of vegetation cover from the Landsat 7 sensor and from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate net primary productivity (NPP) of forest stands at the Bartlett Experiment Forest (BEF) in the White Mountains of New Hampshire. RESULTS Net primary production (NPP) predicted from the NASA-CAS...

1999
Bin WANG Atsuo ONO Kanako MURAMATSU

In this paper, a scheme to remove clouds and their shadows from remotely sensed images of Landsat TM over land has been proposed. The scheme uses the image fusion technique to automatically recognize and remove contamination of clouds and their shadows, and integrate complementary information into the composite image from multitemporal images. The cloud regions can be detected on the basis of t...

2007
C G Marston R P Armitage F M Danson P Giraudoux A Ramirez P S Craig

This work modelled the spatial distribution of the rodent species that act as hosts in the transmission cycle of the parasitic tapeworm Echinococcus multilocularis. The rodent distribution was modelled in relation to landscape characteristics in four ways, using (1) a Landsat ETM+ derived hard classification, (2) single-image Landsat ETM+ derived NDVI, (3) single-image MODIS 16-day composite ND...

Journal: :Fact sheet / 2022

First posted July 20, 2022 For additional information, contact: Program Coordinator, National Land Imaging U.S. Geological Survey 12201 Sunrise Valley Drive Reston, VA 20192Contact Pubs Warehouse The rolling plains of Nebraska occupy a storied place in the American psyche. those living outside Midwest, Cornhusker State may be seen as symbol Nation’s heartland, cropped border to border, with cou...

Journal: :Journal of environmental biology 2010
Huseyin Oguz Coban Ayhan Koc Mehmet Eker

Previous studies have been able to successfully detect changes in gently-sloping forested areas with low-diversity and homogeneous vegetation cover using medium-resolution satellite data such as landsat. The aim of the present study is to examine the capacity of multi-temporal landsat data to identify changes in forested areas with mixed vegetation and generally located on steep slopes or non-u...

2007
K. D. SHARMA SURENDRA SINGH K. D. Sharma Surendra Singh

Landform, drainage pattern, slope, soil, vegetation and land use/land cover, all of which control surface runoff and peak flow, can be evaluated and mapped reliably and reasonably through Landsat Thematic Mapper (TM) false colour composites of the post-monsoon season. Runoff curve numbers (CAO determined from those data predicted the runoff depth and peak flow with a coefficient of determinatio...

Journal: :Remote Sensing 2017
Joan-Cristian Padró Xavier Pons David Aragonés Ricardo Díaz-Delgado Diego García Javier Bustamante Lluís Pesquer Cristina Domingo-Marimon O. González-Guerrero Jordi Cristóbal Daniel Doktor Maximilian Lange

The use of Pseudoinvariant Areas (PIA) makes it possible to carry out a reasonably robust and automatic radiometric correction for long time series of remote sensing imagery, as shown in previous studies for large data sets of Landsat MSS, TM, and ETM+ imagery. In addition, they can be employed to obtain more coherence among remote sensing data from different sensors. The present work validates...

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