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载畜率对短花针茅荒漠草原植物群落影响的研究
引用本文:毕力格图,索培芬,康俊霞,韩国栋,赵萌莉.载畜率对短花针茅荒漠草原植物群落影响的研究[J].内蒙古农业大学学报(自然科学版),2004,25(4):30-33.
作者姓名:毕力格图  索培芬  康俊霞  韩国栋  赵萌莉
作者单位:1. 内蒙古气象科研所,呼和浩特,010051;内蒙古农业大学生态环境学院,呼和浩特,010018
2. 内蒙古农业大学生态环境学院,呼和浩特,010018
3. 内蒙古锡林浩特牧业机械化学校,锡林浩特市,026000
基金项目:国家自然科学基金项目(30060056),(30360022),教育部高等学校青年教学科研奖励计划(2002-2006),教育部重点项目(02028)
摘    要:本研究于2002年在内蒙古畜牧科学院四子王旗实验站,研究了不同载畜率水平下,短花针茅荒漠草原植物群落盖度、密度、留茬高度、植物地上净生长量,旨在为草地合理放牧利用提供理论依据。结果表明,轻度、中度放牧压力下,植物群落和主要植物盖度、密度增加,但重度放牧压力下这些指标降低。各放牧处理中,植物群落的留茬高度随着放牧时间的延续普遍降低。短花针茅草原放牧系统植物补偿性生长与载畜率密切相关,当绵羊载畜率低于1.027sheep/hm^2/year时植物群落地上初级生产表现等补偿性生长,超出这个阈值时为欠补偿性生长。

关 键 词:放牧系统  荒漠草原  留茬高度  盖度  群落  补偿性生长  合理放牧  原植物  轻度  中度
文章编号:1009-3575(2004)04-0030-04
修稿时间:2004年9月18日

INFLUENCES OF STOCKING RATE ON PLANT COMMUNITY IN Stipa breviflora DESERT STEPPE
BILI Ge-tu,SUO Pei-feng,KANG Jun-xia,HAN Guo-dong,ZHAO Meng-li.INFLUENCES OF STOCKING RATE ON PLANT COMMUNITY IN Stipa breviflora DESERT STEPPE[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2004,25(4):30-33.
Authors:BILI Ge-tu  SUO Pei-feng  KANG Jun-xia  HAN Guo-dong  ZHAO Meng-li
Institution:BILI Ge-tu~
Abstract:The experiment was conducted in Stipa breviflora desert steppe in Siziwang Banner of Inner Mongolia from July to October in 2002.Six different stocking rates and non-grazing plots(CK) were set up with sheep in order to compare plant community response to stocking rates in the experiment.The main results were as follows;(1)Coverage and density of plant community increased in lower stocking rate plots,and declined in higher stocking rate plots.(2)The stubble height of plants decreased in all plots with time.(3)Net primary production of plant species showed equal-compensatory growth when the stocking rate was below 1.027 sheep/hm~2/year,but in decreased rapidly with an increase in stocking rate.
Keywords:Stipa breviflora desert steppe  stocking rate  plant community
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