ZHONG J Y，HAO L N，ZHANG M Y,et al. The impact of human activities on eco-geological environment carrying capacity in the Yanhe River Basin[J].Journal of Henan Polytechnic University( Natural Science),doi:10.16186/j.cnki.1673-9787. 2023040038.

Received：2023-04-19

Revised：2023-05-26

Online：2024-03-29

The impact of human activities on eco-geological environment carrying capacity inthe Yanhe River Basin (Online)

ZHONG Jiayue¹，HAO Lina^1,2，ZHANG Mingying¹，YAN Lihua¹

（1.College of Earth Science，Chengdu University of Technology，Chengdu 610059，Sichuan，China；2.State Key Laboratory of Geological Disaster Prevention and Geological Environment Protection，Chengdu University of Technology，Chengdu 610059，Sichuan，China）

Abstract: Objectives To investigate the influence of the gully land consolidation project and large-scalel and infilling and excavation project on the eco-geological environment carrying capacity（EGCC） of the in the Yanhe River Basin. Methods Fractal theory and information quantity model were used to construct an EGCC evaluation model for the study area，revealing the spatial and temporal patterns and flow dynamics of EGCC.The human activity intensity index was constructed，and the least squares method and Pearson correlation coefficient were used to explore the relationship between human activities and EGCC. Results From 1990 to 2018，the EGCC of the Yanhe River has improved significantly.The average value increased from −0.299 to −0.197，The distribution over the years showed a pattern of “the highest in the middle，the second highest in the southeast and the lowest in the northwest”.The distribution pattern of human activity intensity from 1990 to 2018 change from patchy distribution to “single-core radiation” distribution，with the high intensity area mainly distributed in the central part.Furthermore，the correlation between human activity intensity and EGCC is high and has a positive contribution in a certain range.From 2010 to 2018，under the influence of large-scale land infilling and excavation project，the area of high-level and higher-level EGCC increased by 1.610 km² and 3.164 km²，respectively.The trend of the gully management project and EGCC varies according to the geographical location and development focus of townships. Conclusions Overall，human activities show a strong positive correlation with the EGCC，and the gully land consolidation project and large-scale land infilling and excavation project have a positive impact on the EGCC.

Key words：loess hilly and gully region；gully land consolidation project；large-scale land infilling and excavation project；ecological and geological environment；carrying capacity

CLC: X171.1