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当前位置: 首页 > 文章 > 新源县山地草原植被特征及植物营养对放牧强度的响应 草业科学 2011,28 (8) 1507-1511
Position: Home > Articles > Influence of stocking rates on vegetation characteristics and plant nutrient contents in mountain grassland at Xinyuan County Pratacultural Science 2011,28 (8) 1507-1511

新源县山地草原植被特征及植物营养对放牧强度的响应

作  者：
闫凯;张仁平;李德祥;锡文林;张建立
单  位：
新疆自治区草原总站;新疆维吾尔自治区草原总站;新疆塔里木河流域喀什管理局
关键词：
产量;草地植物营养;放牧强度;山地草原
摘  要：
按照当地典型的放牧模式以及单位时间单位面积放牧的羊单位划分极重度放牧区(E,0.51羊单位/hm2)、重度放牧区(H,0.43羊单位/hm2)、中度放牧区(M,0.32羊单位/hm2)、轻度放牧区(L,0.26羊单位/hm2)和无牧区(U,0羊单位/hm2)5个放牧梯度,探讨了新疆新源县山地草原白羊草(Bothriochloa ischcemum)+杂类草草地植被、草地植物营养在不同放牧强度下的反应特征。结果表明,2009年6月1日的草地产量达到最高(1 008g/m2)。随着放牧强度的增加,群落生境逐渐恶化,草地的物种多样性和结构简单化,生产力下降。极重度放牧区的粗蛋白含量最高(10.6%),中性洗涤纤维含量最低(50%);中度放牧区酸性洗涤纤维含量最低(30.8%)。
译  名：
Influence of stocking rates on vegetation characteristics and plant nutrient contents in mountain grassland at Xinyuan County
作  者：
YAN Kai1,ZHANG Ren-ping1,LI De-xiang2,XI Wen-lin1,ZHANG Jian-li1(1.General Grassland Station of Xinjiang,Xinjiang Urumqi 830049,China;2.Kashi Management Bureau of Tarim River Valley of Xinjiang,Xinjiang Shache 844700,China)
关键词：
yield;plant nutrition;grazing intensity;mountain grassland
摘  要：
According to local typical grazing patterns and sheep units per hectare,the stocking rates in mountain grasslands at Xinyuan County was divided into extremely heavy(E,0.51 sheep unit/ha),heavy(H,0.43 sheep unit/ha),moderate(M,0.32 sheep unit/ha),light(L,0.26 sheep unit/ha) and no grazing area(U,0 sheep unit/ha).The study evaluated effects of above five stocking rates on vegetation characteristics and plant nutrient contents in mountain grasslands with Bothriochloa ischcemum and other forbs.The results showed that the highest yield of forages(1,008 g/m2) was obtained in 1st of June.With increasing grazing intensity,biotope was deteriorated;species diversity was decreased and productivity was reduced.CP content of the forages was the highest(10.6%),but the NDF(50%) was the lowest with extremely heavy grazing treatment;ADF(30.8%) contents with moderate grazing was the lowest among in all of treatments.

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