Knowledge Resource Center for Ecological Environment in Arid Area
| 近50a来科尔沁地区沙漠化土地的动态监测结果与分析 | |
| 其他题名 | Dynamic Monitor to Evolvement of Sandy Desertified Land in Horqin Region for the Last 5 Decades, China |
| 吴薇 | |
| 来源期刊 | 中国沙漠
 |
| ISSN | 1000-694X |
| 出版年 | 2003 |
| 卷号 | 23期号:6页码:646-651 |
| 中文摘要 | 在明确了沙漠化土地的程度分级及其指标、监测方法的基础上，对科尔沁地区近50a来的沙漠化土地进行了遥感动态监测和分析。结果表明：科尔沁地区20世纪50年代未至70年代中期，是沙漠化土地扩展速度最快的一个时期，总面积增加了9 084km~2.从70年代中期到80年代后期，沙漠化土地继续呈快速增长之势，增9 624 km~2;进人90年代，沙漠化过程呈现出逆转的趋势，沙漠化土地总面积由1987年的61 008km~2,减少到年的50 142km~2,减少了10 866km~2.就近50a来沙漠化土地变化的整体而言，经历了发展－再发展－程。到20000年，科尔沁地区的沙漠化态势依然是严峻的。但从整个发展过程来看，沙漠化已呈现逆转的趋势。个区域的生态环境在改善，环境容量在提高，继续发展下去，有望进人良性循环以保障生态环境与社会经济的可持续发展。 |
| 英文摘要 | The evolvement of sandy desertified land in Horqin region for the last 5 decades was dynamically monitored and analyzed based on the grading indexes of desertified lands and the effective monitoring method. In the 20th Century, the desertified land developed at the most fast speed from late 1950s to middle 1970s and the total area had increased by 9 084 km~2 ; the development of desertified land lasted its fast-developing trend from middle 1970s to late 1980s and the total area had increased by 9 624 km~2; as entering 1990s the processes of desertification became inversed, the total area had decreased from 61 008 km in year 1987 to 50 142 km~2 in year 2000 and had decreased by 10 866 km~2during the 13 years. In the past 50 years the desertified land has generally experienced the processes of developing further developinginversing. Although the status of desertified land development was still arduous by year 2000, the revising trend is hopeful. If the trend of eco-environment being improved and the environmental caring capacity being heightened is going on the eco-environment and the social economy are possibly entering the sustainable development. |
| 中文关键词 | 近50a ; 科尔沁地区 ; 沙漠化土地 ; 动态监测 |
| 英文关键词 | last 5 decades Horqin region desertified land dynamic monitor |
| 语种 | 中文 |
| 国家 | 中国 |
| 收录类别 | CSCD |
| WOS类目 | ENVIRONMENTAL SCIENCES |
| WOS研究方向 | Environmental Sciences & Ecology |
| CSCD记录号 | CSCD:1327818 |
| 来源机构 | 北京大学 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/204687 |
| 作者单位 | 北京大学环境工程系, 北京 100871, 中国 |
| 推荐引用方式 GB/T 7714 | 吴薇. 近50a来科尔沁地区沙漠化土地的动态监测结果与分析[J]. 北京大学,2003,23(6):646-651. |
| APA | 吴薇.(2003).近50a来科尔沁地区沙漠化土地的动态监测结果与分析.中国沙漠,23(6),646-651. |
| MLA | 吴薇."近50a来科尔沁地区沙漠化土地的动态监测结果与分析".中国沙漠 23.6(2003):646-651. |
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