Research on diaspore morphology and species distribution of 80 plants in the hill-gully Loess Plateau Assessment of the vulnerability of farmers‘ livelihoods to ecological degradation in arid regions of a continental river basin: a case study of the middle-lower reaches of the Shiyang River in China Guangdong Dabaoshan Mine: ecological degradation, acid drainage and possible measures for their Remediation Self-organizing criticality of ecological degradation in quickly urbanizing area: A case study in Nan Shan district, Shenzhen An overview of ecological degradation and restoration of Eucalyptus plantation