Eco-Environment Quality Response to Climate Change and Human Activities on the Loess Plateau, China

作者：Xun Zhang, Zhaoliang Gao, Frank Yonghong Li, Guanfan Sun, Yunfeng Cen, Yongcai Lou, Yihang Yao, Wenbo Liu · 发表于：Land · 年份：2023 · DOI：10.3390/land12091792 · 被引用次数：12 · 研究领域：Land Use and Ecosystem Services、Remote Sensing in Agriculture、Urban Green Space and Health

Climate change and human activities have caused a range of impacts on the ecological environment. The Loess Plateau (LP) is critical to the stability and health of ecosystems in central and western China, but there is still a lack of research on spatial and temporal heterogeneity in the effects of climate and human activities on the EEQ of the LP. We quantified the ecological environment quality of the study area from 2001 to 2019 based on the improved remote sensing ecological index (RSEI-2) and studied the spatial and temporal evolution of EEQ and its drivers during this period by trend analysis and multiscale geographic weighted regression (MGWR) model. The EEQ of the LP showed an increasingly slowing trend during 2001–2019, with apparent spatial heterogeneity, the south-central part was the hot spot area of change, and the center of gravity of change shifted 124.56 km to the southwest. The driving effects and ranges of each factor changed over time during the study period, and the positive effects of precipitation (PRE) and temperature (TEM) on the EEQ of the southern LP became more apparent, but the negative effects of TEM on the northwestern part have expanded. The negative effect of the intensity of land utilization (LUI) has increased from north to south and has the most profound impact, while population growth has less impact on the central region. The results of this research indicate that the execution of the Grain to Green Program (GGP) in the LP over the last two...