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[1]ZHAO Weixi,DU Huaming,DONG Tingxu,et al.Temporal-Spatial Characteristics of the Vegetation Net Primary Production in the Farming-Pastoral Eco-Tone of Southern China During 2005-2014[J].Research of Soil and Water Conservation,2018,25(06):236-241.

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Temporal-Spatial Characteristics of the Vegetation Net Primary Production in the Farming-Pastoral Eco-Tone of Southern China During 2005-2014

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 06 Page number: 236-241 Column: Public date: 2018-10-26

Title:: Temporal-Spatial Characteristics of the Vegetation Net Primary Production in the Farming-Pastoral Eco-Tone of Southern China During 2005-2014

Author(s):: ZHAO Weixi, DU Huaming, DONG Tingxu, HU Lili; College of Resource and Environment Engineering, Mianyang Normal University, Mianyang, Sichuan 621000, China

Keywords:: NPP; spatial-temporal characteristics; farming-pastoral eco-tone southern; MOD17A3H

CLC:: Q948

DOI:: -

Abstract:: In order to understand the change degree of ecosystem productivity in the farming-pastoral eco-tone southern China, the 2005—2014 annual vegetation NPP data from MOD17A3H dataset was used to analyze the inter-annual variation vegetation NPP and distribution of the average annual vegetation NPP by difference method and a linear regression. The research results indicated that: (1) significant differences in distribution of vegetation NPP presented a decrease trend from north to south, the average annual vegetation NPP was 389 gC/(m²·a), average annual vegetation NPP change ranged from 344 gC/(m²·a) to 426 gC/(m²·a)) in the farming-pastoral eco-tone of southern China during 2005—2014; (2) the average annual vegetation NPP increased by 106 gC/(m²·a) in 2014, the change presented a slight decrease trend, the areas with the decreased annual vegetation NPP accounted for 57% of the territory of the farming-pastoral eco-tone of southern China; (3) the average vegetation NPP for different ecosystems decrased in the sequence: that forest ecosystem > farmland ecosystem > scrub ecosystem > wetland Ecosystem > grassland Ecosystem; the change of vegetation NPP in different ecosystems was similar, and showed a slight decrease trend. It indicated that the fluctuation of ecosystem changes was more obvious and the protection of ecosystem should be strengthened.

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