Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-015-0006-3 |
Optimal root system strategies for desert phreatophytic seedlings in the search for groundwater | |
Li Changjun1,2,3,4,5; Zeng Fanjiang1,3,4; Zhang Bo1,3,4,5; Liu Bo1,3,4; Guo Zichun1,3,4,5; Gao Huanhuan1,3,4,5; Tiyip, Tashpolat2 | |
通讯作者 | Zeng Fanjiang |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2015 |
卷号 | 7期号:4页码:462-474 |
英文摘要 | Desert phreatophytes are greatly dependent on groundwater, but how their root systems adapt to different groundwater depths is poorly understood. In the present study, shoot and root growths of Alhagi sparsifolia Shap. seedlings were studied across a gradient of groundwater depths. Leaves, stems and roots of different orders were measured after 120 days of different groundwater treatments. Results indicated that the depth of soil wetting front and the vertical distribution of soil water contents were highly controlled by groundwater depths. The shoot growth and biomass of A. sparsifolia decreased, but the root growth and rooting depth increased under deeper groundwater conditions. The higher ratios of root biomass, root/shoot and root length/leaf area under deeper groundwater conditions implied that seedlings of A. sparsifolia economized carbon cost on their shoot growths. The roots of A. sparsifolia distributed evenly around the soil wetting fronts under deeper groundwater conditions. Root diameters and root lengths of all orders were correlated with soil water availabilities both within and among treatments. Seedlings of A. sparsifolia produced finer first- and second-order roots but larger third- and fourth-order roots in dry soils. The results demonstrated that the root systems of desert phreatophytes can be optimized to acquire groundwater resources and maximize seedling growth by balancing the costs of carbon gain. |
英文关键词 | desert phreatophytes root system strategy groundwater depth soil water biomass partition |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000353213300005 |
WOS关键词 | ALHAGI-SPARSIFOLIA ; PERENNIAL PLANTS ; BIOMASS ALLOCATION ; TRANSITION ZONE ; WATER DEFICITS ; ARID REGION ; GROWTH ; VEGETATION ; RESPONSES ; DEPTH |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院新疆生态与地理研究所 ; 新疆大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188396 |
作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Xinjiang Univ, Coll Resources & Environm Sci, Urumqi 830046, Peoples R China; 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Cele Natl Stn Observat & Res Desert Grassland Eco, Urumqi 830011, Peoples R China; 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi 830011, Peoples R China; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Li Changjun,Zeng Fanjiang,Zhang Bo,et al. Optimal root system strategies for desert phreatophytic seedlings in the search for groundwater[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2015,7(4):462-474. |
APA | Li Changjun.,Zeng Fanjiang.,Zhang Bo.,Liu Bo.,Guo Zichun.,...&Tiyip, Tashpolat.(2015).Optimal root system strategies for desert phreatophytic seedlings in the search for groundwater.JOURNAL OF ARID LAND,7(4),462-474. |
MLA | Li Changjun,et al."Optimal root system strategies for desert phreatophytic seedlings in the search for groundwater".JOURNAL OF ARID LAND 7.4(2015):462-474. |
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