Abstract
The study of the ecological system (ES) reaction to anthropogenous loading (AL) has been aimed at developing the remote sensing method for quantitative mapping of AL on ES. The analysis of the problem has shown that the main approach for its solution is to assess the amount of entropy induced in ES by AL. The general formalism has been dis-cussed and the thermodynamic index of ES health disturbance (TIEHD- ) has been deduced from the conservation law as a portion of solar exergy spent by ES on the parrying entropy formed in ES due to AL with respect to the total amount of exergy of solar irradiations absorbed by ES. The technique of remote mapping of TIEHD has been developed. The maps of TIEHD and the normalized differential vegetation index (NDVI)- have been compiled on the basis of NOAA and EOS satellite data. The qualitative and quantitative analysis exhibited the best sensitivity of TIEHD to AL on ES in respect to NDVI.
Highlights
Quantitative estimation of ecological system (ES) health affected by anthropogenous loading (AL) is one of the most challenging problems of environmental state monitoring
The general formalism has been discussed and the thermodynamic index of ES health disturbance (TIEHD- IT ) has been deduced from the conservation law as a portion of solar exergy spent by ES on the parrying entropy formed in ES due to AL with respect to the total amount of exergy of solar irradiations absorbed by ES
Based on the conservation law of exergy fluxes inside ES, it has been shown that after some simple assumptions TIEHD can be represented as a portion of solar exergy spent by ES on the parrying entropy formed in ES due to AL with respect to the total amount of exergy of solar irradiations absorbed by ES
Summary
Quantitative estimation of ES health affected by AL is one of the most challenging problems of environmental state monitoring. There have been numerous attempts to create techniques for assessing AL on ES [1,2]. These techniques are mainly based on the method of induction (from the particular to the general) using numerous quantitative indicators, e.g., indices, describing [1]: 1) the biogeochemical substance and energy cycles; 2) the actual or potential productivity of the ES; 3) the biodiversity of the ecosystems (Species Richness, ES Scarcity, ES Vulnerability); 4) the cultural value of the affected sites; 5) the migration and dispersal of species composition. The authors suggested 22 indicators of AL on ES and the principle of indicators generalization: “...the impact indicator scores as the summation of the relative impacts of the different land use activities” [3]
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