Thanks to eco-friendly power line upgrades in parts of Sichuan province's Ya'an city, located within the Giant Panda National Park, no incidents of wildlife electrocution, habitat disturbance or fires caused by bamboo or trees have been reported in recent years, local grid workers said on Wednesday.

Covering 5,936 square kilometers, the Ya'an part accounts for 27 percent of total area of the national park — one of China's five national parks. The region is home to 340 wild giant pandas, giving it the highest population density of the rare animal in the world.

As part of efforts to improve the environment and eliminate the risk of electric shock for wildlife, the Ya'an branch of State Grid Sichuan Electric Power Co has completed the retrofitting of three 10-kilovolt power lines totaling nearly 2.8 kilometers in areas that fall within the park, according to Li Peng, a local grid official.

"We have also deployed intelligent monitoring devices along these routes to ensure reliable power infrastructure for local livelihoods and development while protecting the ecosystem," Li said.