Analysis of Grassland Productivity and Carrying Capacity of Natural Warm-temperature Tussock in the Central Region of Guizhou Province  

贵州中部天然暖性草丛草地生产力变化和承载力分析(英文)

作　　者：霍可以[1] 蔡璐 王普昶 赵丽丽[4] 罗天琼 

机构地区：[1]贵州省农业科学院,贵州贵阳550006 [2]贵州省生物技术研究所,贵州贵阳550025 [3]贵州省草业研究所,贵州贵阳550006 [4]贵州大学动物科学学院,贵州贵阳550025

出　　处：《Agricultural Science & Technology》2013年第6期875-878,904,共5页农业科学与技术（英文版）

基　　金：Supported by Project of Agricultural Research Project of Guizhou Province (QKHZ [2010] No.3045);Special Fund of Guizhou Academy of Agricultural Sciences (QNKYZX [2011] No.021);"Twelfth Five-Year" National Science and Technology Support Program (2011BAD17B03)~~

摘　　要：[Objective] This study aimed to investigate the influences of grazing and fencing on grassland productivity and carrying capacity of subtropical natural warmtemperature tussock. [Method] With the natural warm temperature tussock in Longli County of Guizhou Province as study area, monthly, seasonal and annual dynamics of grassland productivity were investigate continuously during 2010 -2012, and the data were analyzed. [Result] Under grazing and fencing conditions, grassland present biomass and forage growth of warm temperature tussock in Longli County of Guizhou Province both increased first and decreased, reaching the maximum from August to October. Fencing significantly improved the productivity of natural grassland but had little effect on the vegetation composition. [Conclusion] From the perspective of grass-livestock balance, the suitable stocking capacity of warm-temperature tussock in the central region of Guizhou Province was 3.45 -4.66 sheep/hm2 , which has high ecological efficiency and can be borne by farmers and herdsmen.[目的]探讨放牧与围封对亚热天然暖性草丛草地生产力的影响并分析其草地承载力。[方法]以贵州中部龙里县亚热带天然暖性草丛草地为试验地区,连续调查2010~2012年草地生产力月、季和年动态,并对数据进行分析。[结果]放牧与围封条件下,贵州龙里暖性草丛草地植物现存量、牧草生长量均表现为先增加后减少的趋势,其峰值出现在8~10月份。围封明显提高天然草地的生产力,对天然草地植被组成改变不大。[结论]从草畜平衡的角度分析,贵州中部暖性草地适宜载畜量在3.45~4.66只羊/hm2时,具有良好的生态效益,在经济上可为农牧民所承受。

关 键 词：GUIZHOU Natural warm-temperature tussock Grassland productivity Grassland carrying capacity 

分 类 号：S812[农业科学—草业科学]