take the "Manganese Triangle" environmental governance as an example 区域环境治理模式创新研究：以湘黔渝“锰三角”为例（2000-2012）：take the "Manganese Triangle" environmental governance as an example take the Yangtze River Delta region as an example take the Yangtze River Economic Zone as an example take HeiLongjiang province as an example take the third-party governance service as and example