草地学报2026，Vol.34Issue(3)：940-948,9.DOI:10.11733/j.issn.1007-0435.2026.03.018
冬季增温及刈割对青藏高原高寒草地土壤有机碳组分及碳库稳定性的影响
Effects of Winter Warming and Clipping on Soil Organic Carbon Fractions and Carbon Pool Stability in Alpine Grasslands of the Tibet Plateau
摘要
Abstract
The changes in the carbon pool of alpine grasslands of the Qinghai-Tibet Plateau play an irreplaceably significant role in promoting regional ecological balance and sustainable development.This study focused on the alpine grasslands of the Qinghai-Tibet Plateau and analyzed the effects of winter warming,clipping,and their interactions on soil organic carbon components and the stability of carbon pool.The results indicated that winter warming significantly increased the content of easily oxidisable organic carbon in the soil.Clipping significantly increased the content of soil particulate organic carbon and decreased the content of mineral-bound organic carbon(P<0.05).The interaction between winter warming and clipping significantly reduced the content of mineral-bound organic carbon(P<0.05).Winter warming significantly enhanced soil carbon pool activity,the carbon pool activity index,and the carbon pool management index(P<0.05).Soil moisture content showd a highly significant positive correlation with the content of mineral-bound organic carbon(P<0.01),while it exhibited a significant negative correlation with the carbon pool activity and the carbon pool activity index(P<0.05).Redundancy analysis and hierarchical partitioning revealed that soil moisture content and nitrate nitrogen concentration significantly influenced the components of soil organic carbon and the stability of the carbon pool.This study provides fundamental data for understanding the changes in soil organic carbon pools under the effects of climate change and human activities in the alpine grasslands of the Qinghai-Tibet Plateau.关键词
冬季增温/刈割/高寒草原/有机碳组分/碳库稳定性Key words
Winter warming/Clipping/Alpine grasslands/Organic carbon fractions/Carbon pool stability分类
农业科技引用本文复制引用
张浩,马扶林,刘小伟,杨聪颖,木塔力甫·吾布力,王晓丽,张强,郭梁..冬季增温及刈割对青藏高原高寒草地土壤有机碳组分及碳库稳定性的影响[J].草地学报,2026,34(3):940-948,9.基金项目
三江源区高寒草地生态教育部重点实验室开放课题(2023-SJYKF-04) （2023-SJYKF-04）
国家自然科学基金项目(42377471)资助 （42377471）
