2.5 Protected areas
It is also necessary to oversee how macaques’ distribution areas are overlapped with the protected areas (PAs) on the mainland, a parameter assessing macaques’ conservation status. We downloaded 3,381 PAs data in 2021 from the National Specimen Information Infrastructureof China (NSII, http://www.nsii.org.cn/2017/home.php), processed missing and no vector extent data. A total of PAs with an area of about 1,079,934 km2 were obtained, based on which we constructed the potential distribution of habitat corridors that macaques could use.