世界遗产组织规定在此

刚刚问了个明白人，原来世界遗产保护的所有龟定都出自一本叫做 operational guideline 的东西。其中和世界遗产缓冲区相关的只有这一条软龟定：

17. Whenever necessary for the proper conservation of a cultural or natural property nominated, an adequate "buffer zone" around a property should be provided and should be afforded the necessary protection. A buffer zone can be defined as an area surrounding the property which has restrictions placed on its use to give an added layer of protection; the area constituting the buffer zone should be determined in each case through technical studies. Details on the size, characteristics and authorized uses of a buffer zone, as well as a map indicating its precise boundaries, should be provided in the nomination file relating to the property in question

另外，世界遗产组织和各会员国是合作关系，遇到此类问题会协商解决，而不是隶属关系。比如，先前审查批准把颐和园列入世界遗产名录的时候的确有一些更具体的文件规定缓冲区的建设控制用地问题，其中很多内容到现在还没有完全确定和落实，并且可以经常修改。因此，我认为保护遗产的想法是正确的，小题大做是没有必要的。