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| 黄河首曲湿地功能区“黑土滩”退化草甸恢复改良 | |
| 引用本文： | 武高林,任国华,刘振恒,杨林平.黄河首曲湿地功能区“黑土滩”退化草甸恢复改良[J].兰州大学学报(自然科学版),2009,45(4). |
| 作者姓名： | 武高林 任国华 刘振恒 杨林平 |
| 作者单位： | 1. 西北农林科技大学,中国科学院水利部水土保持研究所,陕西,杨凌712100;兰州大学牛命科学学院,兰州,730000 2. 兰州大学牛命科学学院,兰州,730000 3. 玛曲县畜牧局玛曲草原工作站,甘肃,玛曲,747300 |
| 基金项目： | 国家天然草原退牧还草工程玛曲县退牧还草试点工程项目 |
| 摘 要： | 采用样方法研究了首曲湿地功能区"黑土滩"退化草甸改良后3 a的群落特征变化,分析了围栏封育和补播"高寒1号"生态组合草种对退化草甸的恢复改良效果.结果显示:仅封育3 a后,"黑土滩"退化草甸群落的盖度、高度、地上生物量和町食牧草比例均显著提高,丰富度指数由0.55增加到0.75,多样性指数南0.07增加到了0.25;封育后补播"高寒1号"生态草种相对于封育前,使得退化草甸的盖度增加了56.00%,高度增加了11.74 cm,地上生物量增加了222.24 g/m2,可食牧草比例增加了55.98%,物种数由5种m2增加到了15种/m2,丰富度指数由0.55增加到了3.29,多样性指数由0.07增加到了1.85,均匀度指数由0.06增加到了0.27.相对围栏封育而言,封育后补播是一种更有效的"黑土滩"退化草甸改良恢复措施.围栏封育和补播配套实施可以显著改善"黑土滩"退化草地的群落貌相、草地生产力和组分结构状况. |
| 关 键 词： | 补播 封育 生物量 群落结构 "黑土滩"退化草甸 "高寒1号"生态草 |
Restoration and improvement of"black soil beach"degraded meadows in Maqu wetland function area of Yellow River |
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| WU Gao-lin,REN Guo-hua,LIU Zhen-heng,YANG Lin-ping,zhang.Restoration and improvement of"black soil beach"degraded meadows in Maqu wetland function area of Yellow River[J].Journal of Lanzhou University(Natural Science),2009,45(4). | |
| Authors: | WU Gao-lin REN Guo-hua LIU Zhen-heng YANG Lin-ping zhang |
| Institution: | 1;2;1.Water and Soil Conservation Institute of Chinese Academy of Sciences and the Ministry of Water Resource;Northwest Sci-Tech University of Agriculture and Forestry;Yangling 712100;Shaanxi;China;2.School of Life Sciences;Lanzhou University;Lanzhou 730000;3.Maqu Grassland Working Station;Maqu Animal Husbandry Bureau;Maqu 747300;Gansu;China |
| Abstract: | The community height,cover,aboveground biomass and plant composition and diversity of"black soil beach"degraded meadows which were fenced and reseeded in Maqu wetland function area were monitored for three years.The aim was to study the effects of fencing and reseeding on improvement of"black soil beach"degraded meadows.The results show that fencing significantly improved vegetation cover, height,aboveground biomass and forage(edible grasses) biomass.Richness index and diversity index were increased from 0.... |
| Keywords: | reseed fencing biomass community structure "black soil beach"degraded meadow "Alpine No 1"eco-grass |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |