A fair use statement regarding the full text of the request

Your requested [基于地形梯度的河北省怀来县山地生态系统空间分布及变化特征分析] is currently limited to Research Center for Eco-Environmental Sciences， Chinese Academy of Sciences internal sharing.

To solicit author authorization, you need to provide the following information: name, organization, personal e-mail, reason for request. The information you provide will be reviewed and you are committed to the truth of the information provided. The personal information you provide will be protected according to law.