International Journal of Environmental Science and Development

Abstract—In this study, the physical disturbance in the river estuary was discussed as the variation of hydrodynamic fields caused by the human activities. We built the coupled model to forecast the ecological risk with physical disturbance in the different condition of temperature gradient. The temperature gradient was one of the most important parameters to report the growth circumstance of water ecological species, especially for the biodiversity. The relationship between water temperature gradient and the biodiversity was proposed by using the model methods. When the gradient was higher, the biodiversity index was increasing, which was considered as the optimal ecological system.

Index Terms—Temperature gradient, physical disturbance, biodiversity, ecological risk, river estuary.

The authors are with the School of Environment, Beijing Normal University, China (e-mail: grawain007@163.com, yanpeng.cai@bnu.edu.cn).

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Cite: Yan Xu, Yanpeng Cai, Tao Sun, Wen Xu, and Zhifeng Yang, "Impacts of Temperature Gradient on the Intensity of Physical Disturbance and the Water Ecological Biodiversity in the River Estuary," International Journal of Environmental Science and Development vol. 7, no. 8, pp. 595-600, 2016.