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| 施肥对甘南高寒草甸退化草地植物群落多样性和生产力的影响 | |
| 引用本文： | 陈文业,戚登臣,李广宇,魏强,王芳,陈炜青,孙飞达,刘振恒.施肥对甘南高寒草甸退化草地植物群落多样性和生产力的影响[J].中国农业大学学报,2009,14(6). |
| 作者姓名： | 陈文业 戚登臣 李广宇 魏强 王芳 陈炜青 孙飞达 刘振恒 |
| 作者单位： | 1. 甘肃省林业科学研究院,兰州,730020 2. 四川农业大学,草业科学系,四川,雅安,625014 3. 甘肃省玛曲县草原总站,甘肃,玛曲,747300 |
| 基金项目： | 甘肃省科技重大攻关项目资助(2GS063-A31-010) |
| 摘 要： | 对甘肃玛曲县中度退化草地进行了氮、磷、钾、有机肥施肥处理,研究了其对草地植物群落多样性和生产力的影响。结果表明:施肥各种处理均可不同程度增加退化草地的植被高度和地上生物量,其中施有机肥O和N-P-K使植被高度分别增加2.208倍、2.274倍,地上生物量分别增加了3.315倍、3.161倍;在施P处理中,杂类草减少32.90%,莎草科植物增加73.43%,有机肥处理中,禾本科植物增加19.69%,不同施肥处理后,莎草科、禾本科和豆科各物种重要值都在增加,而杂类草各物种重要值都在减少;各种施肥处理(施O除外)均可使退化草地植物群落的物种丰富度减少;在N-P-K处理中物种Simpson多样性指数、Shannon-Wiener指数和Pielou均匀度指数均增加,有机肥处理的丰富度和Simpson优势度指数均增加,N处理中Pielou均匀度和Simpson优势度指数均增加,在单施P或K处理中,上述4指数均减少了。从生物多样性特征和生产力增加综合考虑,施有机肥和N-P-K是加速高寒草甸退化草地恢复重建的重要措施。 |
| 关 键 词： | 高寒草甸 施肥 群落多样性特征 生产力 退化草地 |
Effects of fertilization on grass community diversity and productivity of degraded alpine grassland at Maqu,in South of Gansu Province |
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| CHEN Wen-ye,Qi Deng-chen,LI Guang-yu,WEI Qiang,WANG Fang,CHEN Wei-qing,SUN Fei-da,LIU Zhen-heng.Effects of fertilization on grass community diversity and productivity of degraded alpine grassland at Maqu,in South of Gansu Province[J].Journal of China Agricultural University,2009,14(6). | |
| Authors: | CHEN Wen-ye Qi Deng-chen LI Guang-yu WEI Qiang WANG Fang CHEN Wei-qing SUN Fei-da LIU Zhen-heng |
| Institution: | CHEN Wen-ye1,QI Deng-chen1,LI Guang-yu1,WEI Qiang1,WANG Fang1,CHEN Wei-qing1,SUN Fei-da3,LIU Zhen-heng2(1.Gansu Forestry Science , Technology Research Academy,Lanzhou 730020,China,2. Gansu General Grassl, Station of Maqu County,Maqu 747300,3.Department of Grassl, Science,Sichuan Agricultural University,Ya'an 625014,China) |
| Abstract: | Different fertilizers were used in the moderately degraded grassland in Maqu County in order to study their impacts on plant community diversity and productivity. The results showed that fertilization increased the height and above-ground biomass of the degraded grassland vegetation. Among them,the height and aboveground biomass in the treatments of FYM and N-P-K increased by 221% and 227%,332% and 316%. Fertilization also reduced weeds,in contrast,enhancing the proportion of Gramineae and Cyperaceae plants... |
| Keywords: | alpine meadow fertilization community diversity productivity degraded grassland |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |