Drivers of Net Primary Productivity Spatio-Temporal Variation in Ningxia, China

The drivers and spatial distribution trends for net primary productivity (NPP) in Ningxia were studied to determine the priority vegetation restoration areas. NPP data from MOD17 A3 used future through slope trend analysis Hurst index. Spatial defined by a geographic detector correlation analysis. Results indicate that positively fluctuated 2000 2020 with an average range between 119.98 249.66 gC/m2a, multi-year of 190.15 gC/m2a. has more obvious divergent characteristics, showing characteristics low central northern sides high southern middle. Superimposed on indices, will show four scenarios continuous increase, decrease, change increase decrease accounting 22.35%, 1.36%, 71.42% 2.86% area region, respectively. Driving factor influence can be divided into dominant factors important factors. interaction two is positive, maximum q value under precipitation temperature 0.687. mainly driven climatic 50.92% distributed central, western parts Ningxia. non-climatic-factor-driven areas as areas, which 47.08%, are concentrated Yellow River irrigation area, desert steppe eastern parts, small part Liupan Mountains.