Sentences with phrase «difference vegetation»
The phrase "different vegetation" refers to a variety of plants or plant life found in a particular area, which can be distinguished from other places by the types, shapes, and sizes of plants growing there. Full definition
Change in Amazon greenness from 2000 to 2012, measured as Normalized Difference Vegetation Index (NDVI).
sciencedaily.com
To track the greening of leaves, the researchers relied on the Normalized Difference Vegetation Index data acquired by the Moderate Resolution Imaging Spectroradiometer on board NASA's Terra and Aqua satellites.
The line reflects the Normalised Difference Vegetation Index (NDVI): the higher the value, the more vegetation is thriving in the area.
Average spring (March to May) normalized difference vegetation index in response to the warmest 16 % of Arctic March temperatures between 1982 - 2013.
Recent regional scale analyses using satellite - based vegetation indices such as the Normalized Difference Vegetation Index have found extensive areas of dryland greening in areas of the Mediterranean, the Sahel, the Middle East and northern China, as well as greening trends in Mongolia and South America, according to the paper.
«These observations told us that the normalized difference vegetation index (NDVI)-- which is kind of a measure of how «green'the surface is, how much vegetation there is — was not abnormally low,» Bou - Zeid said.
Scanning land, the sensor calculates the density of vegetation as a normalized difference vegetation index (NDVI).
«The results showed that, during moisture deficit periods, green turf cover (GTC), normalized difference vegetation index (NDVI), and leaf relative water content (RWC) were most affected by substrate depth, moderately affected by irrigation regime, and, to a lesser extent, by substrate type,» the authors said.
Around the same time, a NASA scientist named Compton Tucker found that he could map global vegetation changes by calculating a «Normalized Difference Vegetation Index» (NDVI) from the data produced by a satellite sensor.
Six Chinese scientists used remotely - sensed imaging data, including leaf area index (LAI), normalized difference vegetation index (NDVI), an enhanced vegetation index (EVI), gross primary production (GPP) and net primary production (NPP), coupled with other data (temperature, soil moisture, evapotranspiration, albedo and wind) over the period 2003 to 2014 to analyze the effects of a wind farm on summer vegetative growth in a region of northern China.
A normalized difference vegetation index (NDVI) is a ratio of the red band to the infrared band.
The map is based on an index called the Normalized Difference Vegetation Index, or NDVI, which is a measure of how plant leaves absorb visible light and reflect infrared light.
Matt Ridley recently pointed out that a NASA scientist has developed a «Normalized Difference Vegetation Index» that uses satellite data to «map global vegetation changes.»
The images help to reveal notable changes in vegetation cover over time using an indicator that measures vegetation intensity called the Normalized Difference Vegetation Index (NDVI).
The FORMA alerts system then detects pronounced changes in vegetation cover over time, as measured by the Normalized Difference Vegetation Index (NDVI), a measure of vegetation greenness.
Compares LST, albedo, normalized differenced vegetation index (NDVI) and evapotranspiration (ET) between seven different land cover types
Drivers of Sahel vegetation change remain uncertain (Hutchinson et al., 2005), especially because the correlation between rainfall and Normalised Difference Vegetation Index (NDVI) appear weak, signalling that greening can not be fully explained by increasing rainfall (Olsson et al., 2005), and greening may not comprise a return to the initial species composition, cover and surface soil conditions (Warren, 2005).
Rather than use the popular satellite - based Normalized Difference Vegetation Index (NDVI), Liu et al. (a.k.a., Liu3) decided to use the Leaf Area Index (LAI).
Changes in vegetation, particularly a transition from grasses to shrubs, has been reported in the North American Arctic (Sturm et al., 2001) and elsewhere (Tape et al., 2006), and satellite imagery has indicated an increase in the Normalised Difference Vegetation Index (NDVI, a measure of photosynthetically active biomass) over much of the Arctic (Slayback et al., 2003).