Ecosystem vulnerability in the Yellow River Basin (YRB) is a prominent concern. An in-depth exploration of net primary productivity (NPP) serves as an important aspect of assessing and protecting ecosystem health. We explored spatiotemporal changes and influencing factors of NPP in the YRB from 2000–2015, using a range of spatial analysis techniques, and cutting-edge computing-intensive variable importance decomposition methods. We found that NPP showed a fluctuating growth trend over time, ranging from 181.0–259.1 gC∙m ∙a , as well as a clear negative south-north spatial gradient. Significant spatial clustering patterns were observed, with Low-Low and High-High clusters being the dominant area classifications at grid cell, county, and city scales in the study area. We also found that NPP was statistically significantly affected by both natural factors (including climate and topography), and human activities, whilst meteorological factors were the most important factor and explained, on average, roughly 66% of the variability in NPP. Although the impact of human activities on NPP was relatively low when compared to natural factors, the former tended to increase with time and accounted for roughly 30% of the total variability explained by the model in 2015. Overall, this study provides an improved technical framework for undertaking a comprehensive analysis of the spatiotemporal pattern of NPP and its influencing factors at multiple-spatial scales.
Introduction Lumbar muscle strain is a chronic injury to soft tissues such as the lumbar muscles, ligaments, and fascia. Functional exercise has specific applications in treating lumbar muscle injuries caused by sports. However, analyses on the treatment results in the psoas muscle are inconclusive. Objective Analyze the clinical efficacy of functional exercise in treating psoas muscle dysfunction. Methods 10 athletes diagnosed with lumbar muscle strain received continuous training with a functional exercise protocol for two weeks, five times a week. Clinical efficacy was assessed by visual analog scale for pain score and Prokin254 for proprioception ability indices before and after treatment. The article adopts a mathematical statistics analysis method to analyze the therapeutic effect of motor function exercise with SPSS 13.0. Results Patients reported a reduction of pain in the muscles under exertion after functional exercise. The results were significantly different (P<0.05). Patients’ lumbar strength was significantly improved. This index has a considerable statistical difference (P<0.05). Conclusion Functional exercise showed a positive effect on the treatment of psoas muscle injury. The research results of this article can provide an effective training protocol for the rehabilitation of people with a psoas muscle strain. Evidence Level II; Therapeutic Studies - Investigating the result.
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