草业科学2025，Vol.12Issue(12)：3182-3196,15.DOI:10.11829/j.issn.1001-0629.2024-0624
新疆伊犁不同草地类型牧草营养价值及其影响因素
Nutritional value of forages and their impact factors across different grassland types in Yili,Xinjiang
摘要
Abstract
Grassland types are diverse and pasture resources are extremely rich in the Yili region of Xinjiang.It is important to clarify the differences in grass value and its influencing factors for the rational utilization of grassland resources and restoration and management of degraded grassland in this region.In this study,the nutritional value of forage in seven major grassland types in the Ili region was systematically assessed and the influence of environmental factors was examined.The results showed that:1)Forage in alpine meadows had significantly higher crude protein content,the lowest fiber content,and the highest nutritional value than that in other grassland types,exhibiting greater nutritional advantages under climate and nutrient constraints.2)At the functional group level,leguminous forages exhibited higher nutritional value across all grassland types,with superior crude protein and fat content than grasses.3)Random forest analysis indicated that soil total nitrogen and moisture were key factors influencing forage neutral detergent fiber;ammonium nitrogen significantly impacted dry matter intake and relative feed value;and climate conditions(mean annual temperature and precipitation)primarily regulated the nutritional composition of grasses.Leguminous and compositae forages were less influenced by environmental factors.This study provides a scientific basis for the evaluation,conservation,and sustainable utilization of natural grassland resources in the Ili region of Xinjiang.关键词
优势牧草/天然草地/营养价值评价/非生物因子/新疆伊犁州Key words
dominant pasture/natural grass/nutritional value assessment/abiotic factor/Yili region in Xinjiang引用本文复制引用
鲁星鑫,陈天赐,尉剑飞,南富森,杨小倩,公延明,李凯辉,王晓波..新疆伊犁不同草地类型牧草营养价值及其影响因素[J].草业科学,2025,12(12):3182-3196,15.基金项目
第三次新疆综合科学考察——新疆重要草地类型与有害生物调查(2022xjkk0401) （2022xjkk0401）
