The function and services of ecosystem are important components of the life-support system in the planet, as well as the
basic elements for sustainable development of environment and society. In this study, the change of ecosystem function
and services in Jiangxi Province of China were estimated by employing the classification and economic parameters from
Costanza et al. The types and area of terrestrial ecosystems in 1980s and 2000s were identified from Landsat imagery,
based on the maximum likelihood classification methods. And then the distribution maps of ecosystem services of
Jiangxi Province were drawn. The value for terrestrial ecosystem was 2522x108 RMB in 1980s, while it increased by
7.3% in 2000s, which mainly because the increased forest areas in Jiangxi Province. The estimation method employed in
this study was conservative, and should be improved in future studies.
Urban ecological parameters, such as land surface emissivity, temperature, and dryness, play important role in urban
ecological system. The present study aimed to explore these ecological parameters using Landsat ETM+ data. The land
surface emissivity (LSE) was calculated from the normalized vegetation index (NDVI) considering different cases; land
surface temperature (LST) was retrieved from the thermal band based on the method of mono-window algorithm; and
land surface dryness (LSD) was derived from the NDVI via LST space, in which the two edges for the minimum and
maximum LST values (LSTmin and LSTmax) were simulated using NDVI values. The results showed that there was an
obvious gradient as progressed from the core city out into the countryside for the three parameters. The values for LST
and LSD over water surface and vegetated surface were obvious lower than that over impervious surface, demonstrating
water and vegetation had the ability to improve environmental quality. These simulation results could provide
quantitative evaluations and suggestions for the environmental planning and management by government.
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