黄河上游某滑坡坝由两岸滑坡物质形成，进而形成了天然堰塞湖，附近区域现已成为国家自然保护区核心区。
A landslide dam located in the Huanghe upriver was formed by two landslides, then formed the barrier lake which is core area of national natural protection now.
保护区划分了三个功能区，即核心区、缓冲区和实验区。
The Reserve has divided three function areas, namely core, buffer and experimental area.
河曲马品种的保种与选育，应采取划定保护区，建立育种核心群，确定群体有效含量，控制近交，调整马群结构和合适的公母比例等措施；
Some technical measures were used in the breed control of Hequ horse, such matters as defining conservation region, determining effective population size and having a right foundation herd etc.
河曲马品种的保种与选育，应采取划定保护区，建立育种核心群，确定群体有效含量，控制近交，调整马群结构和合适的公母比例等措施；
Some technical measures were used in the breed control of Hequ horse, such matters as defining conservation region, determining effective population size and having a right foundation herd etc.
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