National Social Science Foundation (18BJY086); Natural Science Foundation of Shandong Province (ZR2012DM009)
Based on NDVI, LSWI, land use data and various meteorological and statistical data, with the help of CASA-VPM model and ecological economic coordination coupling degree model, the characteristics of the vegetation NPP temporal and spatial differentiation in the Yellow River Basin from 2001 to 2018 are analyzed; the current ecological and economic development status is discussed , And use it to evaluate the degree of ecological-economic coordination and coupling. The results show that the annual average NPP of vegetation in the Yellow River Basin from 2001 to 2018 was 288.33gC/m2·a-1, and the fluctuations continued to increase. The spatial distribution characteristics of the NPP are high in the south and low in the north, high in the plains and basins, and low in the plateaus and mountains. ; The monthly average NPP changes of different vegetation types show the characteristics of periodic single-peak changes, and the trends and cycles of different vegetation types over time are the same, but the amplitude and rate of change have obvious distinctions; the total annual ecological value of the study area After the economic value is fitted, they show "U"-shaped and linear change characteristics, and the latter has a much higher growth rate than the former. The cold spots are mainly distributed in the transitional area between the northwestern mountain and the plateau edge, and the hot spots are mainly located in the Yellow River The "Golden Triangle" area of the river basin; the ecological and economic coordination coupling degree of the study area presents a strip-like spatial distribution characteristic of "large dispersion, small aggregation" and rising with a "W" curve. The level of economic development is the ecological economic coordination coupling degree of the river basin The dominant factor.