新疆农业科学2018，Vol.55Issue(10)：1943-1951,9.DOI:10.6048/j.issn.1001-4330.2018.10.022
新疆西部天然草地生物量与根冠比特征
Study on the Characteristics of Biomass and Root-Shoot Ratio of the Main Natural Grassland Types in Western Xinjiang
摘要
Abstract
[Objective] This project aims to study the characteristics of aboveground biomass, belowground biomass and root-shoot ratio of natural grassland in the hope of providing basic data and theoretical reference for the study of grassland carbon stocks in western Xinjiang.[Method]The aboveground biomass, litter biomass and belowground biomass of four main natural grassland types in western Xinjiang were measured through typical sample plot investigation, and the characteristics of biomass and root-shoot ratio of different grassland types were analyzed.[Result]The aboveground living biomass of the lowland saline meadows and temperate desert grasslands was higher than others in western Xinjiang, which were 121.27 and 110.78 g/m2, respectively, 2.21 and 2.02 times higher than temperate desert steppe. The belowground biomass of the alpine desert steppe was the largest, which was 2, 517.77 g/m2, 1.39, 2.12 and 3.85 times higher than others. The total biomass of the alpine desert was the largest, relatively, reaching 2, 578.49 g/m2, and the total biomass of the temperate desert was the smallest, which was 777.92 g/m2. The belowground root biomass of different components accounted for 89.90％, 97.65％, 96.77％ and 84.16％ of the total biomass, respectively. Root-shoot ratio of alpine desert steppe and temperate desert steppe were higher than others, which were 41.58 and 32.79, respectively, significantly higher than that of the lowland saline meadows and temperate desert (P＜0.05).[Conclusion]The results indicated that the order of aboveground living biomass of four natural grassland types in western Xinjiang was: lowland saline meadows＞ temperate desert＞ alpine desert steppe＞ temperate desert steppe, and the characteristics of belowground biomass, total biomass and root-shoot ratio of natural grassland were as follows: alpine desert steppe＞ temperate desert steppe＞ lowland saline meadows＞ temperate desert. The characteristics biomass of different components was as follows: belowground root biomass＞ aboveground biomass＞ litter biomass in western Xinjiang.关键词
天然草地/生物量/根冠比/特征Key words
growth stages/major gene plus polygene inheritance/genetic analysis引用本文复制引用
查向浩,王泽,刘耘华,李瑞霞,盛建东,易海艳..新疆西部天然草地生物量与根冠比特征[J].新疆农业科学,2018,55(10):1943-1951,9.基金项目
中国科学院战略性先导科技专项 (XDA05050405) （XDA05050405）
新疆土壤与植物生态过程实验室资助 （）
