| 肖辉杰,丁国栋,贾瑞燕,马士龙.京郊荒滩生态恢复初期植被与土壤环境的变化——以延庆县为例[J].干旱地区农业研究,2005,(5):202~206 |
| 京郊荒滩生态恢复初期植被与土壤环境的变化——以延庆县为例 |
| Changes of vegetation and soil environment of wasteland in the early period of eco-restoration in Beijing suburb — A case study of Yanqing |
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| DOI：10.7606/j.issn.1000-7601.2005.05.40 |
| 中文关键词: 荒滩 生态恢复 植被 土壤理化性质 延庆县 |
| 英文关键词:wasteland eco-restoration vegetation soil physical and chemical properties Yanqing County |
| 基金项目:国家自然科学基金(30471422)； 北京市科委计划重大项目(h020720110590) |
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| 中文摘要: |
| ：对延庆县龙庆峡荒滩恢复初期植被和土壤特征的变化进行了研究。结果表明:荒滩恢复过程中,人工植被长势良好,植物种类由恢复前的13种增加到60种,群落物种的丰富度指数、均匀度指数、多样性指数均比恢复前显著提高;生活型谱中一、二年生草本植物的比例由恢复前的61.5%降低到35%,植被盖度由恢复前的18%增加到80%。植被的恢复使土壤理化性质发生了变化,与恢复前相比土壤中有机质、碱解氮、速效钾以及细砂、极细砂、粉砂、粘粒含量显著增加,pH值和速效磷含量降低。 |
| 英文摘要: |
| In this paper, the changes of vegetation and soil nutrition in the early period of restoration of wasteland in Longqingxia, Yanqing County were studied. The results showed that, in the course of wasteland restoration, the cultivated vegetation grew well; the plant species was increased from 13 to 60, and the richness index, evenness index and diversity index of species was increased significantly; the proportion of annual and biennial herbage in vegetation composition was decreased from 61.5% to 35%, and the vegetation coverage was increased from 18% to 80%. Vegetation restoration also resulted in the changes of soil physical and chemical properties, i.e., the contents of organic matter, alkali-hydro nitrogen, rapidly-available potassium and the contents of fine sand, very fine sand and clay were increased significantly, while PH and the content of rapidly-available phosphorus were decreased. |
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