| 黄土高原降水资源特征与林木适宜度研究 |
| |
| 引用本文： | 何永涛,李文华,郎海鸥.黄土高原降水资源特征与林木适宜度研究[J].干旱区研究,2009,26(3). |
| |
| 作者姓名： | 何永涛 李文华 郎海鸥 |
| |
| 作者单位： | 1. 中国科学院,地理科学与资源研究所,北京,100101
2. 中国环境科学研究院,北京,100012 |
| |
| 基金项目： | 国家自然科学基金项目，中国科学院"西部之光"项目 |
| |
| 摘 要： | 黄土高原位于干旱半干旱地区,水资源匮乏,如何根据当地的降水条件来确定适宜的植被类型是生态建设中的一个关键问题.通过对黄土高原68个气象台站1961-2000年逐月降水量的统计,结果表明:黄土高原的降水特征总体表现为年平均降水量区域差异大,由东南部的大于600 mm逐渐递减到西北部的不足200 mm;植物生长期间的降水占全年80%以上,且季节分配不均,表现为春旱、夏多、秋少.依据黄土高原的降水资源特征,从林地水量平衡理论出发,以生长季期间林地的水分收支状况来确定林木的适生程度,并以县为单位对黄土高原的林木适宜性进行分区.结果表明,黄土高原适宜于乔木林和灌木林的区域各占1/4左右.
|
| 关 键 词： | 林木适宜度 水量平衡 生态需水 降水资源 黄土高原 |
Study on the Characteristics of Precipitation Resources and the Afforestation Suitability in the Loess Plateau |
| |
| HE Yong-tao,LI Wen-hua,LANG Hai-ou.Study on the Characteristics of Precipitation Resources and the Afforestation Suitability in the Loess Plateau[J].Arid Zone Research,2009,26(3). |
| |
| Authors: | HE Yong-tao LI Wen-hua LANG Hai-ou |
| |
| Institution: | 1.Institute of Geographic Sciences and Natural Resources Research;Chinese Academy of Sciences;Beijing 100101;China;2.Chinese Research Academy of Environmental Science;Beijing 100012;China |
| |
| Abstract: | Located in the arid and semi-arid regions,the Loess Plateau is a fragile region with low precipitation and intensive evaporation.Therefore,water is the most important limiting factor,and how to restore suitable vegetation in different regions based on the precipitation is a foundation to the ecological conservation and regeneration in the plateau.Based on the 40-year(1961-2000) climate data observed by 68 meteorological stations in the Loess Plateau,the precipitation characteristics in the plateau are analy... |
| |
| Keywords: | afforestation suitability water balance ecological water requirement the Loess Plateau |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
