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[1]LIU Xiaoju,PAN Cunde,CHU Jiangtao,et al.Response of Aboveground Carbon Density of Herbaceous Layer to Post-Fire Time of Fire Severity in Kanas, Xinjiang[J].Research of Soil and Water Conservation,2022,29(03):98-105.

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Response of Aboveground Carbon Density of Herbaceous Layer to Post-Fire Time of Fire Severity in Kanas, Xinjiang

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 03 Page number: 98-105 Column: Public date: 2022-04-20

Title:: Response of Aboveground Carbon Density of Herbaceous Layer to Post-Fire Time of Fire Severity in Kanas, Xinjiang

Author(s):: LIU Xiaoju¹, PAN Cunde², CHU Jiangtao¹, ZHANG Yue¹, SHAN Qi¹; (1.Xinjiang Agriculture Vocational Technical Collage, Changji, Xinjiang 831100, China; 2.Collage of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China)

Keywords:: Kanas; herb; functional group; carbon density; fire severity; post-fire time

CLC:: S762; X17

DOI:: -

Abstract:: In order to explore the effects of fire severity and post-fire time on carbon density of herbaceous layer in Taiga forest of Kanas, fire disturbance plots were set up in Kanas Nature Reserve, and herb biomass was investigated by harvest method. The response of herbaceous aboveground carbon density to fire severity was studied in four functional groups: Cyperaceae, Gramineae, Leguminosae and weeds. The results showed that the aboveground carbon density ranged from 0.096 t/hm² to 0.359 t/hm². In the three successional stages, Cyperaceae and Gramineae contributed more to the aboveground carbon density of the herbaceous layer; weeds contributed 10.03%～40.97% to the aboveground carbon density of the herbaceous layer; Leguminosae contributed the least to the aboveground carbon density of the herbaceous layer, and they contributed more only in the coniferous and broad-leaved forest stage after 51～84 years of low severity fire. Most of the stands in Kanas Taiga were in the stage of coniferous broad-leaved and coniferous mixed forest. The overall trend of aboveground carbon density in herbaceous layer under different fire severity decreased in the order: low severity>moderate severity>high severity, which indicated that low severity was conducive to the growth of herbs. The response of aboveground carbon density of herb functional groups to fire severity in three successional stages was not the same, but the overall trend of the aboveground carbon density of herbaceous layer decrease with increasement of the time after fire. High severity had the greatest impact on aboveground carbon density in herbaceous layer, and was not conducive to maintaining or improving forest productivity. By removing litter under the forest, the fire severity should be controlled in the range of moderate and low severity, which is conducive to improving the carbon sink function of herbaceous layer.

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Last Update: 2022-04-20