草原与草坪2025，Vol.45Issue(1)：52-60,9.DOI:10.13817/j.cnki.cyycp.2025.01.007
不同放牧管理措施下张掖草地土壤有机碳储量时空统计分析
Spatiotemporal statistical analysis of soil organic carbon storage in Zhangye grassland under different grazing management measures
摘要
Abstract
[Objective]The objective of this study is to investigate the effects of different grazing management measures on soil organic carbon storage in Zhangye grassland and to provide essential data and scientific support for the sustainable development of grassland.[Method]The spatiotemporal distribution of soil organic carbon storage(SOCR)in Zhangye grassland from 1970 to 2022 was simulated by using the localized DAYCENT model.Simula-tion was conducted no grazing management measures and various grazing management practices,including fallow grazing fence,rotational grazing fence,and degraded grassland improvement.[Result]The DAYCENT model with parameter localization effectively simulated the dynamic changes insoil organic carbon in Zhangye.Soil organic carbon(SOC)increased significantly over time,and different grazing management practices positively influenced SOC accu-mulation.Spatially,soil organic carbon storage showed an increasing distribution pattern from southwest to northeast,with high-value areas of organic carbon storage were found in the northeast of Minle County,Gaotai County and Su-nan County.[Conclusion]From the perspective of long-term development,the carbon sequestration capacity of fal-low grazing fences is stronger than that of rotational grazing fences and degraded grassland improvement.The carbon sequestration advantage of rotational grazing fences is slightly higher than that of degraded grassland improvement.In terms of grassland management in Zhangye,long-term soil carbon sequestration can be achieved through reasonable grazing measures.关键词
草地/管理措施/土壤有机碳储量/DAYCENT模型/时空统计Key words
meadow/management measures/soil organic carbon stocks/DAYCENT MODEL/spatiotemporal statistics分类
农业科技引用本文复制引用
王晨,张美玲,田景,张锐祺,李钊,徐玉娟,黄山枫,高志文..不同放牧管理措施下张掖草地土壤有机碳储量时空统计分析[J].草原与草坪,2025,45(1):52-60,9.基金项目
横向基金项目(GSAU-JSFW-2022-20) （GSAU-JSFW-2022-20）
国家自然科学基金项目(32260353) （32260353）
科技部高端外国专家引进计划(G2022042009L) （G2022042009L）
