清代青藏高原东北部河湟谷地林草地覆盖变化
吴致蕾, 刘峰贵, 张镱锂, 陈琼, 周强, 杨登兴

Forest and grassland coverage change in the Yellow River-Huangshui River Valley in northeast Qinghai-Tibet Plateau during the Qing Dynasty
Zhilei WU, Fenggui LIU, Yili ZHANG, Qiong CHEN, Qiang ZHOU, Dengxing YANG
图1 河湟谷地历史时期林草地覆盖变化重建框架
Fig.1 Framework for reconstructing forest and grassland coverage change in historical period in the Yellow River-Huangshui River Valley (YHV)