Spatial-temporal evolution and impact effect of agricultural ecological efficiency in the Yellow River Basin

doi:10.14088/j.cnki.issn0439-8114.2022.01.010

Abstract

Abstract: The Yellow River Basin is an important ecological barrier for agriculture in China. Agricultural ecological problems directly affect the high-quality development of agriculture in the Yellow River Basin. In this paper, super-efficiency EBM model, standard deviation ellipse technique and kernel density estimation with agricultural carbon emission and agricultural non-point source pollution as undesirable outputs were comprehensively used to calculate and analyze the agricultural ecological efficiency of nine provinces in the Yellow River Basin from 2000 to 2019, and the vector autoregressive model was constructed to analyze the impact effect of driving factors. The results showed that the overall agricultural ecological efficiency in the Yellow River Basin indicated a downward trend, and regional differences increased. The polarization phenomenon was gradually prominent, and the focus of agricultural ecological efficiency improvement was low-value provinces. The overall spatial distribution presented a pattern of northeast-southwest, with a trend of migration to southwest. The level of financial support for agriculture, agricultural R & D investment, economic development level and agricultural machinery density had a positive impact on agricultural ecological efficiency, and the agricultural disaster rate and the degree of population aging had a negative impact.

Key words: Yellow River Basin, agricultural ecological efficiency, agricultural carbon emissions, spatial-temporal evolution, impact effect

CLC Number:

F323.1

LIANG Yao-wen, WANG Bao-hai, DING Hui-yuan, JIA Shu-han. Spatial-temporal evolution and impact effect of agricultural ecological efficiency in the Yellow River Basin[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(1): 54-60.

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