Spatiotemporal Characteristics of Ecological Conditions and Its Response to Natural Conditions and Human Activities during 1990⁻2010 in the Yangtze River Delta, China.

The Eco_C over 10 km away from the coastline was the lowest and showed an increasing trend with the distance from the coastline, while a more pronounced high point appeared at 90 km (EI = 0.61) and a concave low point (EI = 0.53) appeared at a distance of 200–210 km to the coastline, which were inseparable from human activities.

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