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[1]LIANG Cheng,SU Huimin,ZHANG Yilin,et al.Spatiotemporal Changes and Influencing Factors of Net Primary Productivity of Guanzhong Plain City Cluster from 2000 to 2019[J].Research of Soil and Water Conservation,2023,30(04):293-300.[doi:10.13869/j.cnki.rswc.2023.04.034.]

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Spatiotemporal Changes and Influencing Factors of Net Primary Productivity of Guanzhong Plain City Cluster from 2000 to 2019

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 04 Page number: 293-300 Column: Public date: 2023-06-10

Title:: Spatiotemporal Changes and Influencing Factors of Net Primary Productivity of Guanzhong Plain City Cluster from 2000 to 2019

Author(s):: LIANG Cheng¹, SU Huimin¹, ZHANG Yilin¹, WANG Junxiong^2,3; (1.School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China; 2.Soil and Water Conservation Monitoring Center of the Ministry of Water Resources, Beijing 10005, China; 3.Soil and Water Conservation Supervision Bureau in Shanxi-Shaanxi-Inner Mongolia Border Area of YRCC, Yulin, Shaanxi 719000, China)

Keywords:: vegetation NPP; spatiotemporal changes; Geodetector

CLC:: Q948

DOI:: 10.13869/j.cnki.rswc.2023.04.034.

Abstract:: [Objective] The aim of this study is to analyze and investigate the temporal and spatial variation characteristics of vegetation NPP in Guanzhong Plain city cluster, to reveal the main factors affecting vegetation NPP change, and to provide support for regional ecological restoration and ecological health assessment. [Methods] Trend analysis, correlation analysis and geographic detectors were used to analyze the characteristics and patterns of the temporal and spatial changes of vegetation NPP in the Guanzhong Plain city cluster from 2000 to 2019, and probe the influence factors of NPP. [Results] The average annual vegetation NPP of the Guanzhong Plain city cluster was between 340.3～573.5 g C/m², and the average annual growth rate was 9.1 g C/m². The overall trend was fluctuating and rising, and the NPP growth trend was similar in different geomorphic areas. In most areas, the vegetation NPP change rate was greater than 0, and the coefficient of variation was small. The vegetation NPP mainly increased slightly. Spatially, the vegetation NPP was high in the south and low in the north, high in the west and low in the east. It had obvious spatial differentiation and was the result of the combined effect of natural and social factors. The main influencing factors on vegetation NPP were precipitation, geomorphic types and ≥10℃ accumulated temperature, but the complex coupling between factors had a more significant impact on vegetation NPP. For example, the interaction between precipitation and temperature could explain more than 57% of vegetation NPP. The detection results showed that the interaction between the two factors presented a mutually reinforcing effect. [Conclusions] In most areas of Guanzhong Plain city cluster, vegetation NPP increased significantly, indicating that the regional ecological environment has been greatly improved.

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Last Update: 2023-06-10