摘要
为研究不同放牧时段对高寒草原植被群落和生物量的影响,对青海省海北高寒草原的连续放牧地、暖季放牧地以及冷季放牧地进行群落调查、样品采集和统计分析。结果表明:与常年连续放牧相比,暖季放牧和冷季放牧显著提高高寒草原的群落高度、群落盖度和代表性牧草高度;季节性放牧较常年放牧显著增加禾本科生物量、莎草科生物量、地上总生物量和优质牧草产量;地下总生物量变化趋势为冷季放牧>暖季放牧>连续放牧,其中冷季放牧显著高于常年放牧;冷季放牧地的草地生产力显著高于常年放牧地,但与暖季放牧地的草地生产力差异不显著。在海北高寒草原地区,采用季节性放牧有助于提高高寒草原群落高度、盖度和草地生产力。可以适当鼓励牧民进行季节性放牧,促进天然草地合理利用。
In order to study the effects of different grazing periods on plant community and biomass in alpine grassland,community investigation,sample collection and statistical analysis were conducted about continuous grazing land,warm season grazing land and cold season grazing land in Haibei alpine grassland of Qinghai province.The results showed that compared with continuous grazing,warm season grazing and cold season grazing significantly increased the community height,coverage and representative forge height in alpine grassland;seasonal grazing significantly increased gramineae biomass,cyperaceae biomass,total aboveground biomass and high quality forage yield compared with continuous grazing;the change of total underground biomass ws cold season grazing>warm season grazing>continuous grazing,in which cold season grazing was significantly higher than continuous grazing;grassland productivity in cold season grazing was significantly higher than continuous grazing land,but there was no significant difference in grassland productivity in grazing land of warm season.This study found that seasonal grazing is good for height,coverage and grassland productivity of alpine grassland communities in Haibei,pastoralists can be encouraged to graze seasonally to promote the rational use of natural grassland.
作者
张晓玲
徐田伟
谭攀柱
耿远月
刘宏金
徐世晓
ZHANG Xiaoling;XU Tianwei;TAN Panzhu;GENG Yuanyue;LIU Hongjin;XU Shixiao(Northwest Institute of Plateau Biology,Chinese Academy of Science,Xining 810001,China;Chinese Academy of Science,Beijing 100049,China;College of Ecol-Environmental Engineering,Qinghai University,Xining 810006,China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2019年第10期1576-1582,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
中国科学院战略性先导科技专项(XDA20050104,XDA23060603)
中国科学院西部青年学者B类(2017)
国家重点研发计划(2018YFD0502301,2016YFC0501905,2016YFC0501805)
青海省三江源二期工程科研与推广项目(2018-S-2)
青海省科技支撑(2019-SF-149,2019-SF-153)~~
关键词
放牧时段
群落结构
草地生物量
草地生产力
高寒草原
Grazing period
Community structure
Grassland biomass
Grassland productivity
Alpine meadow
作者简介
第一作者:张晓玲,女,博士研究生,研究方向为放牧家畜生态学。E-mail:18362985573@163.com;通信作者:徐田伟,男,助理研究员,研究方向为畜牧学。E-mail:xutianwei@nwipb.cas.cn;通信作者:徐世晓,男,研究员,博士生导师,研究方向为青藏高原生态畜牧业。E-mail:sxxu@nwipb.cas.cn。
