China Links Environmental Policy to Territorial Claims in South China Sea with New Ecological Assessments

On Friday, China's Ministry of Natural Resources and the South China Sea Bureau released a 2025 marine ecological early-warning and monitoring bulletin, marking Beijing's first comprehensive environmental assessment of nine disputed features in the South China Sea.

The publication of the data, accompanied by a separate marine ecological protection and restoration report, represents a calculated shift in maritime strategy. By utilizing scientific research and conservation policy as administrative tools, Beijing is actively working to assert sovereignty and establish a domestic legal framework over one of the world's most heavily contested waterways.[1][2]

The documents, which cover the contested Paracel (Xisha) and Spratly (Nansha) island chains, assert that the region's overall ecological condition is stable and improving. State media highlighted a reported 38.8 percent live coral coverage at Huangyan Dao—known internationally as Scarborough Shoal—and cited encouraging signs of recovery across the broader archipelago. The bulletin also detailed significant domestic investments in marine restoration, noting that 262 ecological projects were carried out between 2021 and 2025 with a total investment exceeding 21.3 billion yuan, designating millions of hectares as conservation redline areas.[2]

However, the scientific framing quickly pivots to geopolitical accusations, utilizing the environmental data to target regional rivals. The bulletin explicitly blames the Philippines for severe ecological degradation at two highly contested flashpoints: Tiexian Jiao, known internationally as Sandy Cay, and Ren'ai Jiao, or Second Thomas Shoal. By embedding these specific citations within a formal state scientific report, Beijing is attempting to build a documented narrative of environmental negligence against Manila, setting the stage for potential administrative or enforcement actions under the guise of ecological protection.[1][2]

According to the Chinese assessment, live coral coverage at Sandy Cay has plummeted by nearly 70 percent since 2016, a decline the report attributes directly to Manila's 'persistent and illegal construction' in the area. At Second Thomas Shoal, the report claims that accumulated waste, discarded fishing nets, and persistent discharge from the grounded Philippine military vessel BRP Sierra Madre have sharply reduced coral growth. This strategy serves to delegitimize the Philippine presence, framing their maritime outposts not just as territorial violations, but as active ecological hazards that require immediate remediation.[2][5]

The release of the ecological data coincides with Beijing's recent establishment of a 'national nature reserve' at Scarborough Shoal, complete with new management measures issued jointly by the China Coast Guard and the national forestry administration. These rules prohibit unauthorized entry, fishing, and mining, effectively creating a domestic legal framework to restrict foreign access to the disputed waters. By designating the area as a protected reserve, China can deploy its Coast Guard to enforce environmental regulations, bypassing the traditional military standoffs that have characterized the dispute.[1][6]

The United States and its regional allies have sharply criticized the move, recognizing the conservation narrative as a mechanism for territorial expansion. The U.S. State Department formally rejected the nature reserve designation, characterizing it as a unilateral attempt to use 'dubious environmental and legal pretexts, backed by coercion' to deny Filipino fishermen access to their traditional grounds. Allied diplomats argue that these environmental declarations are a form of 'lawfare,' designed to advance territorial ambitions while forcing neighboring countries into the difficult position of opposing nominal conservation efforts.[1][5]

Independent security analysts argue that the ecological reports serve a dual purpose: solidifying administrative control and laying the groundwork for a massive expansion of automated maritime surveillance. By labeling these areas as conservation zones, Beijing can justify the deployment of advanced monitoring infrastructure under the unassailable guise of environmental protection. This infrastructure, while ostensibly designed to track water quality and coral health, inherently provides persistent, high-resolution data on all surface and subsurface vessel movements across the contested region, feeding directly into military intelligence networks.[3][5]

The Institute for the Study of War notes that China is actively developing a 'sky-space-ground-sea integrated monitoring network' slated for completion by 2030. This initiative aims to replace human personnel with unmanned surface vessels, remote sensing satellites, and artificial intelligence to automate marine sampling. Analysts warn that these capabilities inherently double as military domain awareness and early warning systems, allowing the People's Liberation Army and the China Coast Guard to maintain a persistent, automated overwatch of the South China Sea without the logistical strain of continuous manned patrols.[3]

The conservation narrative also represents a stark reversal of historical environmental impact in the region, a point frequently raised by international observers. A 2016 international arbitral tribunal ruling previously concluded that China itself had violated its obligations under the United Nations Convention on the Law of the Sea to protect the marine environment. The tribunal specifically cited Beijing's extensive artificial island-building campaign, which involved massive dredging operations that smothered entire reef systems in sand and concrete to create military outposts and runways.[4]

Research from the Center for Strategic and International Studies indicates that Chinese dredging and giant clam harvesting have destroyed thousands of hectares of coral reefs over the past decade, far exceeding the localized damage attributed to other claimants. By issuing its own ecological assessments, Beijing is attempting to rewrite the environmental record. The strategy shifts the blame for reef destruction onto neighboring claimants while cementing China's physical and administrative footprint across the South China Sea, transforming environmental policy into a primary instrument of geopolitical control.[1][4]