i am working on relation between urban heat island and land use/ land cover. my intention is to use environmental critical index but i do not know how to determine it. please i need your help
Dear Isah,
I think you can use ordinary least square (OLS) or Geographically weighted regression (GWR) to survey the relationship between land use (Area, Type) and temperature in space and time.
For environment index, if you would like to assessing the impact of temperature to human, you can use Humindex. (https://www.academia.edu/8419115/THE_IMPACT_OF_URBAN_MICRO_CLIMATE_CHANGE_ON_HUMAN_COMFORT_IN_LOKOJA_NIGERIA
https://www.researchgate.net/publication/268351304_USE_OF_REMOTE_SENSING_AND_GIS_TO_COMPUTE_TEMPERATURE_HUMIDITY_INDEX_AS_HUMAN_COMFORT_INDICATOR_RELATE_WITH_LAND_USE-LAND_COVER_CHANGE_(LULC)_IN_SURABAYA)
I hope you succeed!
Liem
Article USE OF REMOTE SENSING AND GIS TO COMPUTE TEMPERATURE HUMIDIT...
Environmental criticality can only be measured by evaluating the quality and sustainability levels of various environmental constituents such as air quality, water (surface and underground) quality, noise, solid waste, green areas, waterbodies, population density, spatial pattern of built-up areas etc. It evaluation should be comprehensive and required to include all the components as mentioned according to the ratio of their impact and influence over the environment of a particular region.
Hi,
While I use brook trout populations as an example of how one might index environmental quality, the model approach can be augmented and applied to a variety of species or ecosystems. Please check out: https://www.researchgate.net/profile/Albert_Smith5
Best wishes,
Kirk
To determine Environmental criticality index you should first consult literature or experts to find the environmental impact factors. Then collect the historical data to computer the correlation coefficients. Finally, build the index system using Analytic Hierarchy Process(AHP).
The Environmental Criticality Index (ECI) is used to identify environmentally critical areas based on the ratio between LST and NDVI. The LST and NDVI layers used to derive the ECI Equation were first normalized using the histogram equalization method, resulting in a 1–255 pixel value range. The higher the ECI value, the more environmentally critical the area is.
very low (≤0.5), low (0.5–1), moderate (1–1.5), high (1.5–2.0), and very high (≥2.0).
ECI = LST (Stretched 1–255)/NDVI (Stretched 1–255)
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