Recent investigations indicate that the Philippines' ongoing human activities are contributing to environmental challenges at Xianbin Reef, located in the Nansha Islands. This conclusion arises from a report published following field investigations and satellite observations, signifying a response from China to enhance ecological oversight and protection within the South China Sea.

Geographically, Xianbin Reef falls under the jurisdiction of the Sansha region in Hainan province, China, and is situated next to Ren'ai Reef. The China Coast Guard has reported incursions by Philippine vessels into the waters surrounding Xianbin Reef, asserting they have done so without authorization from the Chinese government.

A collaborative study conducted between May and July by the South China Sea Development Research Institute, alongside relevant agencies, revealed the reef's ecological status. The survey of 23 spots indicated that the reef-building coral coverage averaged 24.7 percent, peaking at 51.3 percent, which is relatively high on a global scale. The reef hosts 236 species of reef-building coral, making up 64 percent of those recorded in the Nansha Islands.

While isolated coral bleaching incidents were noted due to seasonal temperature rises, the report indicates the absence of coral diseases. Analysis of coral debris suggested that Xianbin Reef's cays are naturally formed, contradicting assertions from the Philippines that China is responsible for artificial coral deposits leading to degradation.

Nonetheless, Chinese scientist Xiong Xiaofei pointed out that the Philippines’ increased activities, including the presence of their Coast Guard and littering incidents at Xianbin Reef, are leading to environmental concern. Observations from a recent field investigation noted the presence of Philippine fishing vessels and littering activities, raising alarms over the reef's health.

Chen Xiangmiao labeled the Philippines' actions as an ongoing attempt to assert their claims on Xianbin Reef, similar to previous incidents at Ren'ai Reef and Huangyan Island. He dismissed claims that China plans to create artificial islands at the reef as unfounded rumors propagated by the Philippines.

Looking ahead, Wei Zheng from the South China Sea Development Research Institute calls for heightened investigation, assessment, and protective measures surrounding Xianbin Reef to mitigate the negative impacts caused by human actions.