用root用户启动nginx搭建的图片服务器，无权限访问，求助

如题，主机有2个用户，root和自己创建的bhkj用户。用自己创建的bhkj用户启动nginx可以访问到图片，但是用root启动就提示

403 Forbidden


You don't have permission to access the URL on this server. Sorry for the inconvenience. Please report this message and include the following information to us. Thank you very much!


nginx配置如下：

    server {
        listen       8000;
        server_name  localhost;
        location ~ .*\.(gif|jpg|jpeg|png) {
            root   /app/bhkj/wls12130/user_projects/domains/BABY/servers/myserver/;
        }
    }
访问地址为：http://xxx.xx.xx.xx:8000/upload/1413951178960photo.jpg


求指点如何用root启动nginx还能访问到图片！