Effects of Altitude Change on Nutritional Quality and Elymus nutans Regularity in Qinghai-Tibet Plateau

作     者：He Jing-lei Zhou Yan-tong Kong Ling-ze-lai Li Bing Yu Jin-qiu Gong Hao Sun Xue Cui Guo-wen He Jing-lei;Zhou Yan-tong;Kong Ling-ze-lai;Li Bing;Yu Jin-qiu;Gong Hao;Sun Xue;Cui Guo-wen

作者机构：College of Animal Sciences and TechnologyNortheast Agricultural UniversityHarbin 150030China 

出 版 物：《Journal of Northeast Agricultural University(English Edition)》 (东北农业大学学报（英文版）)

年 卷 期：2021年第28卷第2期

页      面：69-76页

学科分类：090403[农学-农药学(可授农学、理学学位）] 09[农学] 0904[农学-植物保护] 

基　　金：Supported by the National Natural Fund(31872998) 

主　　题：Elymus nutans Griseb. Qinghai-Tibet Plateau nutritional quality grey correlation analysis 

摘      要：In order to reveal the effects of different altitudes on the nutritional quality of wild forage in Qinghai-Tibet Plateau,this study used Elymus nutans as the tested plants to evaluate the changes of nutrient contents and the correlation between the nutrient contents and *** sampling sites were set up at altitudes of 2562,2660,2775 and 2905 m with the vertical distance among each sampling point was about 100 *** results showed that the crude protein,ash and phosphorus contents of Elymus nutans decreased significantly with an increase in *** crude protein contents decreased by 1.87%with each 100 m increase in *** variation rule of crude protein contents with altitudes in the simulated curve wasy=-0.0187x+63.244(R^(2)=0.9557).The crude ash contents decreased by 1.77%with each 100 m increase in *** variation rule of crude ash contents with altitudes in the simulated curve wasy=-0.0177x+56.144(R^(2)=0.978).Neutral detergent fiber(NDF)and acid detergent fiber(ADF)showed an overall increasing trend with the increase of altitudes,but the most obvious increase was at 2775 *** contents of crude fat and Ca did not change regularly with altitudes.