长江科学院院报2024，Vol.41Issue(11)：189-195,202,8.DOI:10.11988/ckyyb.20240083
查旦湿地高寒草地牧草营养品质空间格局
Spatial Distribution of Herbage Nutrition in Alpine Meadows in Chatan Wetland of Dangqu Basin
摘要
Abstract
Forage yield and quality are the basis of reasonable livestock carrying capacity,which is of great signifi-cance for livestock production.Based on the field survey data and spatial information of natural alpine meadows in Chatan wetland of Dangqu basin,this paper analyzes the spatial distribution of forage nutrient quality indexes and explores their spatial heterogeneity under the change of soil types by combining with the laboratory test.The results showed that:crude protein content decreased and then increased from south to north in Cambisols pasture,with the minimum value occurring at about 32.90°N;neutral detergent fiber content increased and then decreased from south to north in highly active lyophilized soil pasture,with the maximum value occurring at about 32.85°N;and acidic detergent fiber content increased and then decreased from south to north in Cambisols pasture,with the maximum value occurring at about 32.90°N.Between 4 650 and 4 850 m,the crude protein content of Cambisols pasture had an extremely significant positive correlation with elevation(R2=0.61,p＜0.01);the acid detergent fiber content of Cambisols pasture had a significant negative correlation with elevation(R2=0.43,p＜0.05).High-quality alpine pastures are mainly distributed in a U-shape from south to north with 32.90°N as the lowest point.Forage nutrition-al quality was positively correlated with elevation between 4 650 and 4 850 m.The research results can deepen the knowledge of the nutritional quality of the alpine grassland in the Yangtze River source,improve the rational utiliza-tion of the alpine grassland in the Yangtze River source,and provide auxiliary suggestions for the intensive,large-scale,ecological and digital development of the animal husbandry industry.关键词
牧草营养品质/高寒草甸/粗蛋白/中性洗涤纤维/酸性洗涤纤维/查旦湿地Key words
herbage nutrition/alpine meadows/crude protein/neutral detergent fiber/acid detergent fiber/Cha-tan wetland分类
农业科技引用本文复制引用
程学军,廖茂昕,付重庆,张双印,徐坚..查旦湿地高寒草地牧草营养品质空间格局[J].长江科学院院报,2024,41(11):189-195,202,8.基金项目
中央级公益性科研院所基本科研业务费项目(CKSF2023296/KJ,CKSF2023191/KJ) （CKSF2023296/KJ,CKSF2023191/KJ）
长江源典型高寒湿地碳储量估算科学考察研究项目(CKSK2023798/KJ) （CKSK2023798/KJ）
