Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/avsc.12062 |
Relationships of native trees with grasses in a temperate, semi-arid sandy ecosystem of northern China | |
Yang, Hongxiao2; Chu, Jianmin3; Lu, Qi1; Gao, Ting4 | |
通讯作者 | Lu, Qi |
来源期刊 | APPLIED VEGETATION SCIENCE |
ISSN | 1402-2001 |
EISSN | 1654-109X |
出版年 | 2014 |
卷号 | 17期号:2页码:338-345 |
英文摘要 | Question Afforestation is a controversial method for restoring semi-arid sandy ecosystems to control desertification. We studied how native elm trees (Ulmus pumila L.) interact with grasses in the semi-arid sandy ecosystem of the Otindag, and how the trees should be arranged to promote ecological restoration. Location Otindag Sandy Land, Inner Mongolia, northern China. Methods Using 40 adult elms, we investigated and compared root depths of the native trees with those of neighbouring grasses. The shallowest elm roots and the deepest grass roots were analysed. Using four singleton elms, we also examined how soil moisture in the different soil layers (0-10, 10-20, 20-30 and 30-40cm) and grass biomass density changed with distance from the corresponding tree trunks in four directions within 19m. Results On average, the shallowest elm roots were 17.6 cm deep at 1m from the elm trunks, and 24.5cm at 3m from the elm trunks, whereas the deepest grass roots were 14 cm deep at 1m from the trunks, and 16.3 cm deep at 3m from the trunks. The moisture content in the 0-20cm layers decreased with distance from 1 to 19m from the singleton elms, but increased along the same distance gradient in the 20-40cm layers. Grass biomass density decreased along the distance gradient, and a logistic model fits this tendency well, which indicates that the grass biomass density levels off at distances of >ca. 9m. Conclusions Given the vertical divergence of roots and the horizontal pattern of soil moisture, the adult native trees do not compete for much moisture with grasses. The adult native trees have the potential to facilitate the growth and biomass accumulation of nearby grasses. In the semi-arid sandy ecosystem of the Otindag, native elms can be planted for ecological restoration at intervals of up to 18m. |
英文关键词 | Semi-arid sandy ecosystem Northern China Water competition Desertification Native tree Facilitation Ecological restoration |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000332774800014 |
WOS关键词 | DESERTIFICATION ; FOREST ; RESTORATION ; VEGETATION ; DIVERSITY ; WATER ; PHOTOSYNTHESIS ; DEGRADATION ; EVAPORATION ; GRASSLAND |
WOS类目 | Plant Sciences ; Ecology ; Forestry |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/180743 |
作者单位 | 1.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China; 2.Qingdao Agr Univ, Coll Resources & Environm, Qingdao 266109, Shandong, Peoples R China; 3.Chinese Acad Forestry, Inst Forestry, Beijing 100091, Peoples R China; 4.Qingdao Agr Univ, Coll Life Sci, Qingdao 266109, Shandong, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Hongxiao,Chu, Jianmin,Lu, Qi,et al. Relationships of native trees with grasses in a temperate, semi-arid sandy ecosystem of northern China[J],2014,17(2):338-345. |
APA | Yang, Hongxiao,Chu, Jianmin,Lu, Qi,&Gao, Ting.(2014).Relationships of native trees with grasses in a temperate, semi-arid sandy ecosystem of northern China.APPLIED VEGETATION SCIENCE,17(2),338-345. |
MLA | Yang, Hongxiao,et al."Relationships of native trees with grasses in a temperate, semi-arid sandy ecosystem of northern China".APPLIED VEGETATION SCIENCE 17.2(2014):338-345. |
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