您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Rotational grazing promotes grassland aboveground plant biomass and its temporal stability under changing weather conditions on the Qinghai-Tibetan plateau

文献类型： 外文期刊

作者： Li, Yu 1 ; Dong, Shikui 2 ; Gao, Qingzhu 4 ; Zhang, Yong 5 ; Liu, Shiliang 6 ; Ganjurjav, Hasbagan 4 ; Hu, Guozheng 4 ; W 1 ;

作者机构： 1.Chongqing Technol & Business Univ, Sch Tourism & Land Resource, Chongqing, Peoples R China

2.Beijing Forestry Univ, Coll Grassland Sci, Beijing, Peoples R China

3.Cornell Univ, Dept Nat Resources, Fernow Hall, Ithaca, NY 14853 USA

4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing, Peoples R China

5.Southwest Forestry Univ, Coll Wetlands, Natl Plateau Wetlands Res Ctr, Kunming, Yunnan, Peoples R China

6.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing, Peoples R China

7.Beijing Acad Agr & Forestry Sci, Beijing, Peoples R China

8.China New Era Grp Corp, Beijing, Peoples R China

关键词： belowground biomass; compensatory growth; precipitation; rotational yak grazing; temperature

期刊名称：LAND DEGRADATION & DEVELOPMENT （ 影响因子：4.977； 五年影响因子：5.291 ）

ISSN： 1085-3278

年卷期：

页码：

收录情况： SCI

摘要： The aboveground biomass (AGB) production of grazed grasslands is mediated by climate, soil nutrients, livestock and other factors. How the biotic and abiotic factors directly or indirectly regulate AGB remains unclear. To fill this gap, from 2014 to 2017, we conducted a rotational grazing experiment to examine the response of AGB to biotic and abiotic factors in Nagqu, a typical alpine meadow community on the Qinghai-Tibetan Plateau. Six yaks were rotationally grazed among three plots from July to September, meanwhile, three plots were set up to exclude from livestock as control; climate, plant biomass, and soil nutrients were investigated during grazing experiment, and then structural equation modeling was used to analyze the regulation of environmental factors on AGB. The results showed that precipitation affected AGB via affecting soil nitrate nitrogen (NO3-N), compensatory growth rate, and belowground biomass indirectly; temperature can directly and negatively affected AGB. In contrast grazing exclosure, rotational grazing increased both AGB and its temporal stability in alpine meadow community significantly (p < .05). The temporal stability of the AGB was positively related to the asynchrony between high- and low-palatability herbages (p < .05). In conclusion, rotational grazing should be recommendable for alpine meadow management due to its benefits for community productivity and stability while current stocking rate should be reduced to a reasonable level, especially in a warm and drought year, to sustain plant compensatory growth under grazing.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台