Causes and mitigation measures of group-occurring slope debris flows in Mentougou District， Beijing City

Spatial correlation networks and influencing factors of urban land green utilization efficiency in three major urban agglomerations of Yellow River basin

Characteristics of wind-sand environment and gully entering process in Shajiawan small watershed in middle reaches of Yellow River

Impact of resource-exhausted city transformation on net ecosystem productivity——A case study of Xuzhou City， Jiangsu Province

Extraction methods and distribution characteristics of farmland bunds at different spatial scales