Knowledge Resource Center for Ecological Environment in Arid Area
| 地下水位变化对干旱区植被盖度的影响及其空间变异特征 | |
| 其他题名 | Influence of groundwater level change on vegetation coverage and their spatial variation in arid regions |
| […] | |
| 来源期刊 | Journal of Geographical Sciences
 |
| ISSN | 1009-637X |
| 出版年 | 2004 |
| 卷号 | 14期号:3页码:323-329 |
| 英文摘要 | Sampling and testing are conducted on groundwater depth and vegetation coverage in the 670 km2 of the Sangong River Basin and semi-variance function analysis is made afterwards on the data obtained by the application of geo-statistics. Results showed that the variance curve of the groundwater depth and vegetation coverage displays an exponential model. Analysis of sampling data in 2003 indicates that the groundwater depth and vegetation coverage change similarly in space in this area. The Sangong River Basin is composed of upper oasis, middle ecotone and lower sand dune. In oasis and ecotone, influenced by irrigation of the adjoining oasis, groundwater level has been raised and soil water content also increased compared with sand dune nearby, vegetation developed well. But in the lower reaches of the Sangong River Basin, because of descending of groundwater level, soil water content decreased and vegetation degenerated. From oasis to abandoned land and desert grassland, vegetation coverage and groundwater level changed greatly with significant difference respectively in spatial variation. Distinct but similar spatial variability exists among the groundwater depth and vegetation coverage in the study area, namely, the vegetation coverage decreasing (increasing) as the groundwater depth increases (decreases). This illustrates the great dependence of vegetation coverage on groundwater depth in arid regions and further implies that among the great number of factors affecting vegetation coverage in arid regions, groundwater depth tums out to be the most determinant one. |
| 英文关键词 | geo-statistics groundwater level groundwater depth arid regions vegetation coverage semi-variance function spatial variation Kriging |
| 语种 | 英语 |
| 国家 | 中国 |
| 收录类别 | CSCD |
| WOS类目 | MULTIDISCIPLINARY SCIENCES |
| WOS研究方向 | Science & Technology - Other Topics |
| CSCD记录号 | CSCD:1844823 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/204773 |
| 推荐引用方式 GB/T 7714 | […]. 地下水位变化对干旱区植被盖度的影响及其空间变异特征[J],2004,14(3):323-329. |
| APA | […].(2004).地下水位变化对干旱区植被盖度的影响及其空间变异特征.Journal of Geographical Sciences,14(3),323-329. |
| MLA | […]."地下水位变化对干旱区植被盖度的影响及其空间变异特征".Journal of Geographical Sciences 14.3(2004):323-329. |
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