River Ice Can Shape Watershed Ecology

As river ice cover decreases, the physical and biological changes to river ecosystems vary with the watershed characteristics and river size.

Effect of Coal Mining on Springs in the Yushenfu Mining Area of China

The main purpose of this study was to analyze the effect of coal mining on the springs in the Yushenfu mining area of China. The results of two springs and hydrological surveys conducted in 1994 and 2015 were compared to study the occurrence and evolution of springs before and after large-scale mining. The mechanism of spring evolution and ecological effects of domain evolution were analyzed by combined groundwater monitoring and evaluation of coal mining intensity. The results show that the maximum amount of single water inflow of spring with sand infiltration recharge was more than 10 L/s, the total amount of single water inflow of spring with mixed infiltration recharge was the highest, and the ecological effect of spring with loess infiltration recharge was the most significant. In the study area, 2580 springs (group) were distributed with a total flow of 4998.9428 L/s before 1994 and 376 residual springs (group) were present with a total flow of 996.392 L/s in 2015. Large-scale mining decreased the regional groundwater level, thus decreasing the amount of spring water. The high intensity of mining decreased the number of springs (group) and area of water and wetland in the study area. This directly affected the watershed ecology; the ecological degradation was significant.

An Ecological Compensation Mechanism of Chishui River Water Resources Protection and Research

Chishui River, a first-order south tributary of upper Yangtze River, extends cross Sichuan, Yunnan and Guizhou provinces and is famous as the “eco-river with a lot of endemic fishes”, “Beauty River with natural scenic landscapes”, “Chinese famous liquors river with Maotai” and “hero river”. According to the existing problems in Ecological Environment of the Chishui River, the ecological compensation mechanism was established and the compensation of the main watershed ecology, ecological compensation object, ecological compensation standards and ecological compensation ways were determined, for protecting the environment requirements of the rare and unique fish and Liquor industry production of Yangtze River.

Research on the Watershed Ecological Risk Management

The risk management of watershed ecology is an important topic in the field of water resources management. To improve the present situation of the water ecological risk management in Songhua River and Liao River watershed, based on the policy of eco-management of the important water function zone in China, and the potential risk source investigation of watershed, investigate hazard components, predict risk probability and the possible negative effects, put forward the mitigation measure on water ecological response in watershed. It is necessary to explore water ecotoxicological variation, resolve biodiversity watershed, establish a suitable ecological evaluation index system, and put forward the multi-objective of optimizing management strategies.