Analysis of the characteristics of Eco-Exergy-based indices and diversity indices in the Zhoushan archipelago, China
- PDF / 498,724 Bytes
- 8 Pages / 595.276 x 790.866 pts Page_size
- 58 Downloads / 175 Views
ENVIRONMENTAL TOXICOLOGY AND BIOGEOCHEMISTRY OF ECOSYSTEMS
Analysis of the characteristics of Eco-Exergy-based indices and diversity indices in the Zhoushan archipelago, China Haiping Huang 1,2 & Yuanmin Sun 1,2 & Weiwei Yu 1,2 & Zhiyuan Ma 1,2 & Kunxian Tang 1,2 Received: 27 August 2019 / Accepted: 29 December 2019 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Anthropogenic disturbance of coastal ecosystems has increased the need for comprehensive methods and indicators to assess the health status of marine ecosystems. Biotic indices are important as they indicate different ecological states. In this study, EcoExergy-based indices (Exergy and Structural Exergy) and diversity indices (Shannon–Wiener index and Margalef index) were applied in the seas around the Zhoushan archipelago, and correlation analysis between biotic indices and environmental factors was used to test the robustness of these indices in capturing the environment changes, aimed to provide reference in selecting the indices for assessing marine eco-environment quality. Results showed that the benthic indices of Exergy, Shannon–Wiener, and Margalef increased with the distance from the mainland. The Eco-Exergy-based indices and Margalef index were significantly, negatively correlated with dissolved inorganic nitrogen and reactive phosphate, and significantly, positively correlated with the salinity of seawater. Overall, the marine ecosystem was more stable further away from the coast, where salinity was higher, and pollutants such as nutrients in seawater were lower. In addition, biodiversity and Eco-Exergy was also higher. Generally, EcoExergy-based indices were observed to be good indicators for detecting the environment changes in the study area. Keywords Marine eco-environment quality . Biotic indices . Eco-exergy . Biodiversity . Zhoushan archipelago
Introduction China has more than 7300 islands with areas larger than 500 m 2 , representing a total island area of nearly 80,000 km2, and a total coastline of over 14,000 km (State Oceanic Administration 2012). The East China Sea has the largest number of islands, accounting for 66% of the total. The characteristics of islands in China are as follows: (i) most islands are distributed in estuarine and coastal waters with those less than 10 km from the coastline accounting for 70%
Haiping Huang and Yuanmin Sun contributed equally to this work. Responsible Editor: Philippe Garrigues * Yuanmin Sun [email protected] 1
Third Institute of Oceanography, Ministry of Natural Resources, MNR, No. 178, Daxue Road, Xiamen 361005, People’s Republic of China
2
Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, People’s Republic of China
of the total; (ii) most islands appear in the form of an island chain or archipelago (Yang 2000). The Zhoushan archipelago is the largest in China and is located in the south of the Yangtze River estuary and to the east of Hangzhou Bay (29° 30′–30° 50′ N; 120° 56′–123° 00′ E). The total area is 22,21
Data Loading...
