TY - Acta Geographica Sinica A1 - LIU Ronggao, LIU Jiyuan, ZHUANG Dafang T1 - Estimation of Land Photosynthetically Active Radiation in Clear Sky Using MODIS Y1 - 2004-01-25 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 64 EP - 73 VL - 59 IS - 1 UR - {https://www.geog.com.cn/EN/10.11821/xb200401008} N1 - 10.11821/xb200401008 ER -