نتایج جستجو برای: biomass estimations

تعداد نتایج: 78176  

Journal: :Remote Sensing 2011
Curtis Edson Michael G. Wing

Light Detection and Ranging (LiDAR) remote sensing has demonstrated potential in measuring forest biomass. We assessed the ability of LiDAR to accurately estimate forest total above ground biomass (TAGB) on an individual stem basis in a conifer forest in the US Pacific Northwest region using three different computer software programs and compared results to field measurements. Software programs...

2016
Mikhail Urbazaev Christian Thiel Mirco Migliavacca Markus Reichstein Pedro Rodriguez-Veiga Christiane Schmullius Eric J. Jokela

Accurate estimates of aboveground biomass (AGB) are crucial to assess terrestrial C-stocks and C-emissions as well as to develop sustainable forest management strategies. In this study we used Synthetic Aperture Radar (SAR) data acquired at L-band and the Landsat tree cover product together with Moderate Resolution Image Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) ti...

2011
A. Salski B. Holsten M. Trepel

Ecologists collect and evaluate data from all possible data sources, sources of objective (mostly quantitative) data, like measurements and simulation results and sources of subjective (often only imprecise qualitative) information, like subjective estimations obtained from an expert. Not all ecological parameters are measurable, for example, the number and biomass of fi sh in a particular lake...

Journal: :Remote Sensing 2012
Sandra Eckert

Accurate estimation of aboveground biomass and carbon stock has gained importance in the context of the United Nations Framework Convention on Climate Change (UNFCCC) and the Kyoto Protocol. In order to develop improved forest stratum–specific aboveground biomass and carbon estimation models for humid rainforest in northeast Madagascar, this study analyzed texture measures derived from WorldVie...

2005
Rocfo SUAREZ

-TO~~~ aboveground live tree biomass in Puerto Rican lower montane wet, subtropical wet, subtropical moist and subtropical dry forests was estimated using data from two forest inventories and published regression equations. Multiple potentially-applicable published biomass models existed for some forested life zones, and their estimates tended to diverge with increasing tree diameter at breast ...

2005
THOMAS J. BRANDEIS ROCÍO SUÁREZ ROZO

—Total aboveground live tree biomass in Puerto Rican lower montane wet, subtropical wet, subtropical moist and subtropical dry forests was estimated using data from two forest inventories and published regression equations. Multiple potentially-applicable published biomass models existed for some forested life zones, and their estimates tended to diverge with increasing tree diameter at breast ...

Journal: :Forests 2022

Accurate estimations of leaf biomass are required to quantify the amount material and energy exchanged between vegetation atmosphere, enhance primary productivity forest stands, assess contributions towards mitigation global climate change. The Moso bamboo (Phyllostachys edulis (Carrière) J. Houz) changes dramatically during year owing in leaves growth new shoots. Furthermore, relationship unde...

Nowadays, the satellite data and remote sensing technologies are widely known as efficient tools for the inspection, identification and management of land resources and precision agriculture in most countries. Satellite information could be used in supplying basic and updated information in the estimation of vegetation cover map, irrigated land area and some biological indices of the major agri...

Journal: :Journal of environmental biology 2009
Shiv Shankar Yadav Rajni Shukla Y K Sharma

Effect of various concentrations of nickel (100, 200, 500 and 1000 microM) and recovery treatments of boron (50 and 100 microM) and copper (15 and 75 microM) each with 200 microM and 500 microM of nickel on germination, growth, biomass, chlorophyll, carotenoids, pheophytin, amylase, protein, sugar as well as activity of catalase and peroxidase were studied in radish (Raphanus sativus cv. Early ...

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