Knowledge Resource Center for Ecological Environment in Arid Area
The succession and spatial structure of vegetation on desertified land in arid area | |
Wang, JH; Ma, QL; Yang, ZH; Liu, HJ; E, YH; Zhan, KJ | |
通讯作者 | Wang, JH |
会议名称 | 25th IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2005) |
会议日期 | JUL 25-29, 2005 |
会议地点 | Seoul, SOUTH KOREA |
英文摘要 | It is well known that man-assisted revegetation is one of the most effective methods to stabilize sand dunes, promote biodiversitv, reduce the damages of desertification and hence reverse the course of desertification. The objectives of this study were to monitor the succession and changes in spatial structure of the vegetation after establishment of revegetation on windward sand dunes in and area of Northwestern China, where the average annual rainfall is 160 mm. Field observations revealed that during the past 20 years, the main vegetation community has undergone a series of changes from herbages to herbages + Hedysarum scoparium to herbages + H. scoparium + Artemisia ordosica to Artemisia ordosica + herbages. In the diluvium and alluvium based sandy areas where the Nitraria tangutorum was the dominant species, the vegetation have had the succession from Nitraria tangutorum + herbages to Nitraria tangutorum + herbages + Artemisia ordosica to Artemisia ordosica + herbages + Nitraria tangutorum to Asterothamnus centrali + Stipa gobica + Artemisia ordosica. It is clear that, with the degradation of the man-assisted revegetation, e.g. R scoparium, the natural species, such as Artemisia ordosica and herbatyes have dominated the communities. With the succession of the dominant species, the spatial structure of the plants has tended to concentrate to the height of 20-60 cm. Results revealed that the feasibility of sand dune fixation not only relates to the coverage of vegetation, but also to the spatial structure of the plants. |
英文关键词 | arid area desertified land desertification spatial structure man-assisted revegetation |
来源出版物 | IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium, Vols 1-8, Proceedings |
出版年 | 2005 |
页码 | 2376-2380 |
ISBN | 0-7803-9050-4 |
出版者 | IEEE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | CPCI-S |
WOS记录号 | WOS:000237237603036 |
WOS类目 | Geosciences, Multidisciplinary ; Remote Sensing |
WOS研究方向 | Geology ; Remote Sensing |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/295446 |
作者单位 | (1)Key Lab Combating Desertificat Gansu Province, Wuwei, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, JH,Ma, QL,Yang, ZH,et al. The succession and spatial structure of vegetation on desertified land in arid area[C]:IEEE,2005:2376-2380. |
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