长江科学院院报2024，Vol.41Issue(11)：196-202,7.DOI:10.11988/ckyyb.20230479
长江源草地生物量空间分布及分配初步研究
Spatial Distribution and Allocation of Grassland Biomass in the Headwaters of the Yangtze River
摘要
Abstract
The grassland ecosystem is an important resource for humans to cope with climate change.The Headwa-ters of the Three Rivers is an important area to study the status of grassland ecosystem due to its vulnerability and sensitivity.Based on the totally 45 measured grassland biomass with varied coverage in the headwaters,mainstreams and tributaries,this study analyzed the spatial distribution of biomass and the ratio in the southern source of the Yangtze River.The results indicated that the grassland biomass becomes lower when the location is closer to head-water(as elevation increases).The grassland above-ground biomass(AGB)ranged from 21.12 g/m2 to 850.61 g/m2,while belowground biomass(BGB)ranged from 50.34 g/m2to 6 810.68 g/m2.The higher the grassland cover-age,the more obviously the biomass decreased with increasing elevation.The ratio of grassland AGB to BGB was less than 0.5,and the higher the grassland coverage,the lower the ratio.The study explored the distribution of AGB and BGB and their ratios,which provided preliminary exploration and data accumulation for understanding the grassland status in the source region of the three rivers.关键词
长江源/当曲水系/地上生物量/地下生物量/生物量分配/三江源草地状态Key words
headwaters of the Yangtze River/Dangqu river system/above-ground biomass/below ground biomass/biomass partitioning/grassland status in the three-river sources分类
农业科技引用本文复制引用
张双印,赵保成,赵登忠,周伟,任斐鹏,付重庆,郑航,郑学东,徐平..长江源草地生物量空间分布及分配初步研究[J].长江科学院院报,2024,41(11):196-202,7.基金项目
水利部重大科技项目(SKS-2022039) （SKS-2022039）
中央级公益性科研院所基本科研业务费项目(CKSF2023311,CKSF2023296/KJ) （CKSF2023311,CKSF2023296/KJ）
