نتایج جستجو برای: شاخص ndvi و savi

تعداد نتایج: 766806  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده منابع طبیعی 1389

این مطالعه با هدف بررسی تغییرات تاج پوشش گیاهی در 4 مکان مرتعی در اطراف شهرستان سمیرم واقع در استان اصفهان و یک منطقه جنگلی در شهرستان لردگان از توابع استان چهار محال و بختیاری در دو دهه گذشته انجام شده است. برای این منظور تصاویر ماهواره لندست در 6 دوره زمانی سال های 1990، 1999، 2000، 2001، 2002 و 2009 و یک تصویر ماهواره irs-p6 (سنجنده awifs) مربوط به سال 2006 انتخاب و مورد پردازش قرار گرفت. اب...

Journal: :Remote Sensing 2010
Jerry L. Hatfield John H. Prueger

The paper investigates the value of using distinct vegetation indices to quantify and characterize agricultural crop characteristics at different growth stages. Research was conducted on four crops (corn, soybean, wheat, and canola) over eight years grown under different tillage practices and nitrogen management practices that varied rate and timing. Six different vegetation indices were found ...

2015
Sandip S. Thorat Yogesh. D. Rajendra K. V. Kale S. C. Mehrotra

The present study demonstrates the application of remote sensing for the estimation of areas corresponding to crop and forest lands covered in the district of Aurangabad, (Maharashtra), India. The data acquired by IRS-P6 Advanced Wide Field Sensors (AWiFS) having 56m spatial resolution for the months of October & December 2012 which covered complete study areas with its swath of 740Km has been ...

2008
Shauna Nelson Keith T. Weber

Vegetation indices are commonly applied to remote sensing data and their application is based upon well established image processing theory and methodology. Simple band ratio vegetation indices allow for consistent and uniform data processing and analysis. However, it was hypothesized that many of these standard vegetation indices (e.g., SR, NDVI and SAVI) may not produce results any different ...

2011
Bradley Evans Tom J. Lyons Paul A. Barber Christine Stone Giles Hardy

Remote sensing of vegetation condition using high resolution digital multispectral imagery (DMSI) is an option for land managers interested in quantifying the distribution and extent of dieback in native forest. Crown condition is assessed as reference to the physical structure and foliage (i.e. density, transparency, extent and in-crown distribution) of a tree crown. At 20 sites in the Yalgoru...

2016

هدیکچ هقباس و فده : ناطرس زا بسانم تاعلاطا اب یم صاخ یئایفارغج هیحان رد فلتخم یاه همانرب ناوت ار یبط یاه یارب لابرغ و نامرد یرگ ) Screening ( هورگ دومن صخشم رطخرپ یاه . نآ زا هک اج گرم نازیم نانمس ناتسا تشادهب زکرم لااب ریم و ی زکرم رد یناقوف شراوگ هاگتسد ناطرس رثا رب ار ی ا هدرک شرازگ ناریا تس . یماـمت تـبث و یـسررب یارـب تفریذپ ماجنا یعماج قیقحت نانمس ناتسا یموب تیعمج نیب رد ناطرس دراوم ...

2016

كچ ي هد :فده و هقباس و ينميا رب رچسوپ لرتنك رد للاتخا تيلاعف ماگنه رد تاكرح تيفيك اه ي و هرمزور ريرايا ييشزرو يم رب رروم لماوع زا يكي .دراذگ رچسوپ لرتنك فاطعنا يم تلاضع يريذپ يلع .دشاب اتتيسن عويش مغر يهاياوك داييز ه رد ،گنيرتسمه هلضع ي چ هعلاطم طاتارا يا ن يسررب لداعا اب هلضع نيا يهااوك هديش هيعلاطم نييا زا فديه .تيسا و كيااتسا لداعا اب گنيرتسمه هلضع يهااوك طاتارا يسررب يم ملاس...

Journal: :E3S web of conferences 2023

The article presents the analysis of widespread spectral indexes results Earth remote sensing data thematic processing to reveal most representative one for applying under conditions critical increase groundwater level and salinity as well salinized soil. Long-term monitoring multispectral images LandSat-8 satellite were collected Golodnostepsky irrigation land. Sites with disturbing ameliorati...

2017
Jochen Börgermann David M. Holzhey Matthias Thielmann Evaldas Girdauskas Holger Schroefel Steffen Hofmann Hendrik Treede Klaus Matschke Michael Hilker Justus T. Strauch Thierry Carrel Thorsten Wahlers Anno Diegeler Jörg Kempfert Thomas Walther

OBJECTIVES The ACURATE TA TM system is a self-expanding transcatheter heart valve system designed for transapical access which has been proven to be safe and effective in the controlled setting of clinical trials. The SAVI-1 and SAVI-2 registries aimed to assess whether these promising outcomes can be translated into all-comers clinical routine. METHODS From November 2011 to 2012 (SAVI-1), an...

Journal: :IOP conference series 2023

Abstract India is a country where the agricultural economy plays surreal role in economic, as well social development of country. After independence, various things changed field which green revolution played an important making Indian people self-sufficient food production especially states like Punjab shows great potential activities due to their geographical circumstances. In last 35 years c...

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