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| 补播禾草对玛曲高寒沙化草地各经济类群地上生物量的影响 | |
| 引用本文： | 陈子萱,田福平,武高林,牛俊义.补播禾草对玛曲高寒沙化草地各经济类群地上生物量的影响[J].中国草地学报,2011,33(4). |
| 作者姓名： | 陈子萱 田福平 武高林 牛俊义 |
| 作者单位： | 1. 甘肃省农业科学院生物技术研究所,甘肃兰州,730070 2. 中国农业科学院兰州畜牧与兽药研究所/农业部兰州黄土高原生态环境重点野外科学观测试验站,甘肃兰州730050;甘肃农业大学草业学院,甘肃 兰州 730070 3. 西北农林科技大学/中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌,712100 4. 甘肃农业大学农学院,甘肃兰州,730070 |
| 基金项目： | 国家自然科学基金项目(30900177); 国家“973”课题(2010CB951505); 基本科研业务费项目(1610322011013); 西藏草业专项资助 |
| 摘 要： | 为研究补播禾草对玛曲高寒沙化草地各经济类群地上生物量的影响,于2006年和2007年在甘肃玛曲高寒沙化草地进行了禾草补播试验。结果表明:补播禾草可增加高寒沙化草地草群高度和植被盖度。补播当年,莎草类地上生物量降低,禾草类地上生物量增加。补播第二年,各经济类群地上生物量都增加,禾草类的地上生物量增加最多,占到总生物量的50%左右。其中,中华羊茅(Festuca sinensis)、草地早熟禾(Poa pratensis)和垂穗披碱草(Elymus natans)混播的处理,禾草类和豆科类比对照分别高出34.56%和96.37%,是玛曲高寒沙化草地较好补播处理。补播作为改良天然草场的有效措施,对增加草群高度、覆盖度和提高草地地上生物量具有积极作用。 |
| 关 键 词： | 补播 高寒沙化草地 盖度 地上生物量 |
Effects of Overseeding Grass on Aboveground Biomass of Different Economic Group in Maqu Alpine Desertified Meadow Pasture |
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| CHEN Zi-xuan,TIAN Fu-ping,WU Gao-lin,NIU Jun-yi.Effects of Overseeding Grass on Aboveground Biomass of Different Economic Group in Maqu Alpine Desertified Meadow Pasture[J].Chinese Journal of Grassland,2011,33(4). | |
| Authors: | CHEN Zi-xuan TIAN Fu-ping WU Gao-lin NIU Jun-yi |
| Institution: | CHEN Zi-xuan1,TIAN Fu-ping2,3,WU Gao-lin4,NIU Jun-yi5(1.Institute of Biotechnology,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China,2.Lanzhou Institute of Animal and Veterinary Pharmaceutics Sciences,CAAS / The Lanzhou Scientific Observation and Experiment Field Station of Ministry of Agriculture for Ecological System in Loess Plateau Areas,Lanzhou,730050,3.Pratacultural College,Gansu Agricultural University,730070,4.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Pl... |
| Abstract: | The effects of overseeding on aboveground biomass of different economic group in Maqu alpine desertified meadow were studied from 2006 to 2007.The results showed that overseeding grass can increase vegetation height and coverage.Aboveground biomass of sedges decreased and grasses biomass increased in 2006.In 2007 aboveground biomass of all economic groups increased and grasses biomass increased significantly,which accounted for about 50% of the total aboveground biomass.Grasses and legumes in mixed sowing g... |
| Keywords: | Overseeding Alpine desertified meadow Vegetation coverage Aboveground biomass |
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