TY - Journal of Changjiang River Scientific Research Institute A1 - ZHAO Yi-xing, QIE Xin, YANG Qing-feng T1 - Spatiotemporal Evolution of Ecosystem Carbon Sources/Sinks in Hebei Province from 2000 to 2020 Y1 - 2025-07-01 JF - Journal of Changjiang River Scientific Research Institute JO - Journal of Changjiang River Scientific Research Institute SP - 77 EP - 85 VL - 42 IS - 7 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20240528 ER -