The canopy rainfall interception in actual and potential distribution of Qinghai spruce (Picea crassifolia) forest
2013
Zhonglin Xu, Xinjiang University, Urumqi (China) | Zhaodong Feng, Xinjiang University, Urumqi (China) | Chuanyan Zhao, Lanzhou University, Lanzhou (China) | Jianghua Zheng, Xinjiang University, Urumqi (China) | Jianjun Yang, Xinjiang University, Urumqi (China) | Fengxia Tian | Huanhua Peng, Lanzhou University, Lanzhou (China) | Chao Wang, Lanzhou University, Lanzhou (China) | Shouzhang Peng, Xinjiang University, Urumqi (China) | Hassan Sher, University of Swat, Saidu Sharif (Pakistan)
Interception is one of the most underestimated processes in hydrological cycle in arid and semiarid regions. In Qilian Mountains of northwestern arid and semiarid China, the Qinghai spruce (Picea crassifolia) forest plays an important role in the hydrological cycle of the inland Heihe River basin. The historical disturbance of Qinghai spruce forest has resulted in various ecological problems. In order to realize the sustainable development of Heihe River basin, the Chinese government implemented restoration practices for Qinghai spruce in the past three decades. In this study, we estimated the rainfall interception in the actual and potential distribution of Qinghai spruce forest. Some of the important findings include: (1) The interception ratio of rainfall events ranged from 11–51% with a mean value of 27.02%; (2) Totally, 147 Mt of rainfall is intercepted by canopy of actual Qinghai spruce forest, in the projected potential distribution of the forest, totally 407 Mt of rainfall will be intercepted.
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