Landscape Fragmentation in Qinling–Daba Mountains Nature Reserves and Its Influencing Factors

Climate change and intensified human activity have altered the landscape pattern of nature reserves are expected to induce persistent changes in habitat quality. Using GIS technology ecological theories, we quantitatively analyzed fragmentation characteristics driving factors for interior peripheries Qinling–Daba Mountains during 2010–2017. spatial principal component analysis, indices, Geodetector, evaluated quality status different reserve types regions impacts disturbance on these areas. The results as follows: (1) Most national were moderately or highly fragmented 2010–2017, degree a few exhibited decreasing trend. (2) patches from core areas experimental inner showed trend being low middle high surrounding area; level gradually decreased edge 1 km (M-1) 5 (M-5). (3) There was differentiation intensity among reserves; intensity, land-use degree, elevation, slope gradient, topographic relief influencing fragmentation, contribution anthropogenic significantly greater than that natural factors. Human activities, such construction network infrastructures, irrational partition management, expansion agricultural industrial production main reasons reserves. These can provide significant scientific support restoration contribute coordinated development between socio-economic system environment exceedingly impoverished