نتایج جستجو برای: land cover changes

تعداد نتایج: 1056014  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی و اجتماعی 1389

today the image of a permanent skeletal space of cities affected by some forces or mechanisms is put in time with social-economic development and while imposes a new face and perspective to physical anatomy of cities, and prepares field to changes in content and social- economic structures of cities too. simultaneously with quitting villages in order to settle in cities by villagers, the phen...

ژورنال: مرتع 2021
, , Shahidi, Khosro, Tavili, Ali,

Using accurate and low-cost methods to monitor quantitative changes in vegetation cover play an important role in the efficient and sustainable management when the area is too large. In this study, the changes of vegetation cover were investigated using satellite data of TM (Landsat_5) and oli (Landsat_8) sensors for a 30-year period (1988-2018) in Chaharbagh rangeland of Golestan province. T...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2003
Alfredo R. Huete Tomoaki Miura Xiang Gao

A number of indicators and signals that lend themselves to monitoring by remote-sensing satellites provide a warning of land degradation. These include loss of vegetative cover, wind and water erosion, soil salinization, deterioration of the soil structure, drier soil, increased reflectance, higher land surface temperatures, and changes in land cover type. But because soil and vegetation change...

2004
J. Li H. M. Zhao

The City of Mississauga in Ontario has been experiencing a fast urban growth in the past two decades which has caused rapid loss of the valuable farm and open space land. Land-use and land-cover maps of the City were produced from Landsat TM images for 1985 and 1999, spanning a period of 14 years. Dramatic changes in land use and land cover have occurred, with loss of forest, cropland and water...

Journal: :international journal of advanced biological and biomedical research 2013
vahed kiyani

for an optimum use of natural resources in the sustainable development trend, there is a need to identify ecological resources in the shortest period of time and minimum possible cost. in this article, we aimed management ecosystem by assessment of plant covers changes at taleghan township in a twenty year period. percentage of landscape and number of patch were among the metrics that were calc...

2005
Limin Yang George Xian Jacqueline M. Klaver

We developed a Sub-pixel Imperviousness Change Detection (SICD) approach to detect urban land-cover changes using Landsat and high-resolution imagery. The sub-pixel percent imperviousness was mapped for two dates (09 March 1993 and 11 March 2001) over western Georgia using a regression tree algorithm. The accuracy of the predicted imperviousness was reasonable based on a comparison using indepe...

2003
H. Damon Matthews Andrew J. Weaver Michael Eby Katrin J. Meissner

[1] The radiative effect of changing human land-use patterns on the climate of the past 300 years is discussed through analysis of a series of equilibrium and transient climate simulations using the UVic Earth System Climate Model. Land-surface changes are prescribed through varying land cover type, representing the replacement of natural vegetation by human agricultural systems from 1700 to 19...

Journal: :European Journal of Formal Sciences and Engineering 2022

Abstract Drivers of land use change were captured by the DPSIR model where (D) represented human needs, Pressures (P), activities, State (S), ecosystem, Impact (I) services from ecosystem and Response (R), decisions taken users. Land sat MSS ETM+ (path 185, row 31) used in this study. The image (June 1987, May, 2000 July, 2014) was downloaded USGS Earth Resources Observation Systems data websit...

2000
Keijiro Otsuka Frank Place

CAPRi Working Papers contain preliminary material and research results, and are circulated prior to a full peer review in order to stimulate discussion and critical comment. It is expected that most Working Papers will eventually be published in some other form, and that their content may also be revised. ABSTRACT This paper examines the effects of tenure on tree management at a community level...

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