scholarly journals Non-native vegetation growth patterns as a tracer for development of human caused perched aquifers in landslide areas

2004 ◽  
Vol 41 (3) ◽  
pp. 282-287
Author(s):  
Neal FARMER ◽  
Shiho ASANO ◽  
Osamu NAGAI ◽  
Larry MARTIN
Keyword(s):  
Growth Patterns ◽  
Native Vegetation ◽  
Vegetation Growth ◽  
Perched Aquifers

scholarly journals Seasonal normalized difference vegetation index responses to air temperature and precipitation in Baghdad

2020 ◽  
Vol 5 (1) ◽  
pp. 631-637
Author(s):  
Salwa S. Naif ◽  
Dalia A. Mahmood ◽  
Monim H. Al-Jiboori
Keyword(s):  
Air Temperature ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Ground Surface ◽  
Vital Role ◽  
Growth Patterns ◽  
Climate Indices ◽  
Climatic Data ◽  
Vegetation Growth ◽  
Temperature And Precipitation

AbstractThe spatial distribution of urban vegetation cover is strongly related to climatological conditions, which play a vital role in urban cooling via shading and reducing ground surface temperature and effective strategy in mitigation urban heat island. Based on the Landsat satellite images, the quantitative normalized difference vegetation index (NDVI) was spatially mapped at two times for each year during 2008, 2013, 2019 in Baghdad. The NDVI values ranged from −1 to +1 with considering values larger than 0.2 indicate the dense healthy vegetation. In this study, the fractional areas of NDVI >0.2 were computed with their percentage. The responses of the NDVI during the growing seasons to two climate indices (i.e., air temperature and precipitation) were investigated. These climatic data obtained from the Iraqi Meteorological Organization and Seismology for the aforementioned years were used to explore the potential correlations between seasonal NDVI and above climate variables. The result shows that NDVI-derived vegetation growth patterns were highly correlated with their recording during the current growth seasons.

scholarly journals Transitions in high-Arctic vegetation growth patterns and ecosystem productivity tracked with automated cameras from 2000 to 2013

AMBIO ◽  
2017 ◽  
Vol 46 (S1) ◽  
pp. 39-52 ◽  
Author(s):  
Andreas Westergaard-Nielsen ◽  
Magnus Lund ◽  
Stine Højlund Pedersen ◽  
Niels Martin Schmidt ◽  
Stephen Klosterman ◽  
...  
Keyword(s):  
High Arctic ◽  
Growth Patterns ◽  
Ecosystem Productivity ◽  
Vegetation Growth ◽  
Arctic Vegetation

Divergent Vegetation Growth Patterns Relative to Bioinfiltration Unit Size and Plant Placement

2015 ◽  
Vol 1 (3) ◽  
pp. 04015001 ◽  
Author(s):  
Robert A. Brown ◽  
Thomas P. O’Connor ◽  
Michael Borst
Keyword(s):  
Growth Patterns ◽  
Unit Size ◽  
Vegetation Growth

scholarly journals IMPACT ASSESSMENT OF A MINE SUBSIDENCE ON NATIVE VEGETATION OF SOUTH EASTERN COALFIELDS, INDIA

2018 ◽  
Vol XLII-5 ◽  
pp. 487-490
Author(s):  
A. K. Vishwakarma ◽  
A. K. Agnihotri ◽  
R. Rai ◽  
B. K. Shrivastva ◽  
S. Mishra
Keyword(s):  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Vegetation Indices ◽  
Remote Sensing Data ◽  
Adverse Impact ◽  
Native Vegetation ◽  
Landsat 8 ◽  
Vegetation Growth ◽  
South Eastern ◽  
Wide Range

<p><strong>Abstract.</strong> This study aims to evaluate the effect of underground coal mining subsidence on the growth of native vegetation. For this study, an underground coal mine of South Eastern Coalfields Limited (SECL), India was selected. Changes in vegetation indices were analyzed using three remote sensing data of the previous five years. Three period’s Landsat 8 OLI resolution image data were used to calculate Normalized Difference Vegetation Index (NDVI) of the years 2014, 2016 and 2018 in QGIS environment. The study showed that the local grassland and forest were affected by the mining exploitation and subsidence but those effects were not significant to have an adverse impact on the same. The short-term mining was having an impact on the vegetation growth but the effects gradually disappeared with the gradual stabilization of the subsided land and in absence of human interference, vegetation recovered well. In long-term, subsidence was not having a major impact on the vegetation growth. Thus, coal resources exploitation and subsidence of the said mine of SECL did not bring out an adverse impact on a wide range of forest and grassland ecosystems, and these ecosystems could carry the partial destruction and ultimately stabilized ecosystems by self-repair.</p>

scholarly journals Global distribution of hydrologic controls on forest growth

2020 ◽  
Author(s):  
Caspar T. J. Roebroek ◽  
Lieke A. Melsen ◽  
Anne J. Hoek van Dijke ◽  
Ying Fan ◽  
Adriaan J. Teuling
Keyword(s):  
Hydrological Cycle ◽  
Water Source ◽  
Growth Patterns ◽  
Forest Growth ◽  
Global Distribution ◽  
Landscape Position ◽  
Vegetation Growth ◽  
Continental Scale ◽  
Global Correlation ◽  
Hydrologic Controls

Abstract. Vegetation provides key ecosystem services and is an important component in the hydrological cycle. Traditionally, the global distribution of vegetation is explained through water availability by precipitation. Locally, however, groundwater can aid growth by providing an extra water source (e.g. oases) or hinder growth by presenting a barrier to root expansion (e.g. swamps). In this study we analysed the global correlation between precipitation, groundwater and forest growth, approximated by the fraction of absorbed photosynthetically active radiation, and linked this to climate and landscape position. The results show that at the continental scale, precipitation is the main driver of forest productivity; wetter climates support higher energy absorption and consequentially more growth. But within all climates, landscape position substantially alters the growth patterns both positively and negatively. The influence of the landscape on vegetation growth varies over climate. The results display the importance of analysing vegetation growth in a climate-landscape continuum.

scholarly journals Global distribution of hydrologic controls on forest growth

2020 ◽  
Vol 24 (9) ◽  
pp. 4625-4639
Author(s):  
Caspar T. J. Roebroek ◽  
Lieke A. Melsen ◽  
Anne J. Hoek van Dijke ◽  
Ying Fan ◽  
Adriaan J. Teuling
Keyword(s):  
Water Availability ◽  
Hydrological Cycle ◽  
Water Source ◽  
Growth Patterns ◽  
Forest Growth ◽  
Global Distribution ◽  
Landscape Position ◽  
Vegetation Growth ◽  
Continental Scale ◽  
Global Correlation

Abstract. Vegetation provides key ecosystem services and is an important component in the hydrological cycle. Traditionally, the global distribution of vegetation is explained through climatic water availability. Locally, however, groundwater can aid growth by providing an extra water source (e.g. oases) or hinder growth by presenting a barrier to root expansion (e.g. swamps). In this study we analyse the global correlation between humidity (expressing climate-driven water and energy availability), groundwater and forest growth, approximated by the fraction of absorbed photosynthetically active radiation, and link this to climate and landscape position. The results show that at the continental scale, climate is the main driver of forest productivity; climates with higher water availability support higher energy absorption and consequentially more growth. Within all climate zones, however, landscape position substantially alters the growth patterns, both positively and negatively. The influence of the landscape on vegetation growth varies over climate, displaying the importance of analysing vegetation growth in a climate–landscape continuum.

Changes in the wetland vegetation growth patterns in large lakes on the Yangtze Plain

2019 ◽  
Vol 40 (11) ◽  
pp. 4290-4301
Author(s):  
Xuejiao Hou ◽  
Xiaoling Chen ◽  
Weizhe Liu ◽  
Lian Feng ◽  
Tarig A. Ali
Keyword(s):  
Wetland Vegetation ◽  
Growth Patterns ◽  
Large Lakes ◽  
Vegetation Growth

Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

1970 ◽  
Vol 28 ◽  
pp. 220-221
Author(s):  
Gerald Fine ◽  
Azorides R. Morales
Keyword(s):  
Cardiac Myxoma ◽  
Osteogenic Sarcoma ◽  
Diagnostic Value ◽  
Soft Tissue Tumors ◽  
Amelanotic Melanoma ◽  
Growth Patterns ◽  
Light Microscopic Level ◽  
Mesenchymal Tumors ◽  
Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

Episodic whole plant growth patterns in Ligustrum

1993 ◽  
Vol 89 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Jeff S. Kuehny ◽  
Mary C. Halbrooks
Keyword(s):  
Plant Growth ◽  
Growth Patterns ◽  
Whole Plant
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