Erosion has been thought to have a close relation with precipitation in active orogenic belts. More and more evidence imply that climatic factors play an important role in orogen evolution and precipitation has been thought the motivation causing erosion in orogenic belts. Usually，researchers explain the climatic constraints on mountains evolution with the coupling relationship of precipitation and erosion intensity. Nevertheless，some others raise the evidence to deny the coupling relationship and further more to deny the significant influence of climate on orogenic belts evolution. So here is the question，whether precipitation is associated with erosion intensity? How does precipitation influence erosion and what mechanism is it? In this paper，based on analysis of orogenic belts erosion process and mechanism，we put forward the precipitation potential energy（PPE）concept and draw the spatial distribution map of PPE in Himalayas. Meanwhile，we collect almost entirely apatite fission track（AFT）age data，and obtain the spatial distribution of AFT ages in Himalayas. According to quantitative analysis of these two databases，we found that erosion intensity related to PPE distribution is much better than precipitation spatial distribution. Furthermore，AFT age and PPE has significant spearman relationship for samples since 2.8 Ma. This imply that significant erosion process in Himalayas was caused in young geological period by precipitation，especially since the Quaternary. Global cooling since Cenozoic era resulted in erosion strengthening，and the latest climatic pattern decided the erosion spatial distribution in active orogenic belts.
Wang Fengyi Ji Jianqing Yu Xiangjiang Tu Jiyao Zhong Dalai. Quantitative research on temporal and spatial coupling of precipitation potential energy and erosion intensity in Himalayas[J]. Chinese Journal of Geology, 2017, 52(1): 1-14.