| 亚高山草甸类草地退化评估及草地保护对策 |
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| 引用本文： | 张秀云,姚玉璧,王润元.亚高山草甸类草地退化评估及草地保护对策[J].水土保持通报,2008,28(6):142-145,154. |
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| 作者姓名： | 张秀云 姚玉璧 王润元 |
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| 作者单位： | [1]中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [2]中国气象局成都高原气象研究所,四川成都610071 [3]甘肃省定西市气象局,甘肃定西743000 |
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| 基金项目： | 中国气象局成都高原气象研究所高原气象开放基金项目(IPM2006014); 2008年国家气象行业科研专项“西北地区旱作农业对气候变暖的响应特征及其预警和应对技术研究”; 科技部科研院所社会公益研究专项(2005DIB3J100); 干旱气象科学研究基金项目(IAM200711)资助 |
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| 摘 要： | 为研究亚高山草甸类草地退化及草地保护对策，在实地测定大量样方和统计分析的基础上，选取了盖度、物种多样性指数、丰富度指数、物种数、草地质量指数、优良牧草比例等指标作为评估指标，制定了亚高山草甸类草地生态质量评估的4级指标值。选择各级别典型生态区域，对其现状和指标值进行了对比分析。结果表明，该方法反映了植被生态的量化指标，各项指标相互联系和相关，具有易获得性和实用性，符合当地生态质量现状，可以科学、客观地评估区域生态质量。超载过牧，滥采乱挖，人为破坏，生物链失衡等是造成生态退化的人为因素。控制放牧，防止滥采乱挖，建立自然生态保护区是维护该区域生态系统平衡的措施。
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| 关 键 词： | 生态质量 评估指标体系 亚高山草甸类草地 |
| 收稿时间： | 2008/6/20 0:00:00 |
| 修稿时间： | 2008/7/21 0:00:00 |
Grassland Degradation Evaluation and Its Protection Countermeasures on Subalpine Meadow |
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| ZHANG Xiu-yun,YAO Yu-bi and WANG Run-yuan.Grassland Degradation Evaluation and Its Protection Countermeasures on Subalpine Meadow[J].Bulletin of Soil and Water Conservation,2008,28(6):142-145,154. |
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| Authors: | ZHANG Xiu-yun YAO Yu-bi and WANG Run-yuan |
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| Institution: | Key Laboratory of Arid Climate Change and Reducing Disaster,Gansu Province and China Meteorological Administration,and Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou,Gansu 730020,China;Chengdu Institute of Plateau Meteorology,China Meteorological Administration,Chengdu,Sichuan 610071,China;Dingxi Meteorological Bureau,Dingxi,Gansu 743000,China;Dingxi Meteorological Bureau,Dingxi,Gansu 743000,China;Key Laboratory of Arid Climate Change and Reducing Disaster,Gansu Province and China Meteorological Administration,and Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou,Gansu 730020,China |
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| Abstract: | Based on the results observed in plots and from statistical analysis,vegetation coverage,species diversity,richness,number of species,index of grassland quality,and biomass percentage of palatable herbage are selected as the evaluation indices to study grassland degradation and protection countermeasures on the subalpine meadow.Using the typical ecological area on the grassland of subalpine meadow,the relationships between the evaluation indices and existing circumstances are analyzed.Results show that the ... |
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| Keywords: | ecological quality evaluation index system subalpine meadow |
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