Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-013-0222-7 |
N and P resorption in a pioneer shrub (Artemisia halodendron) inhabiting severely desertified lands of Northern China | |
Li, YuLin; Jing, Chen; Mao, Wei; Cui, Duo; Wang, XinYuan; Zhao, XueYong | |
通讯作者 | Li, YuLin |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2014 |
卷号 | 6期号:2页码:174-185 |
英文摘要 | Nutrient resorption is an important conservation mechanism for plants to overcome nutrient limitation in the less fertile area of desertified land. In the semi-arid Horqin Sandy Land of Northern China, the shrub Artemisia halodendron usually colonizes into the bare ground of severely desertified land as a pioneer species. It is, therefore, expected that A. halodendron will be less dependent on current nutrient uptake through efficient and proficient resorption of nutrients. In this study, we found that averaged nitrogen (N) and phosphorus (P) concentrations in senesced leaves significantly varied from 12.3 and 1.2 mg/g in the shifting sand dune to 15.9 and 1.9 mg/g in the fixed sand dune, respectively, suggesting that foliar N and P resorption of A. halodendron were more proficient in the shifting sand dune. In particular, positive relationships between nutrient concentrations in senesced leaves and soil nutrient availability indicate that A. halodendron in infertile habitats is more likely to manage with a low level of nutrients in senesced leaves, giving this species an advantage in infertile soil. Moreover, foliar N- and P-resorption efficiencies and proficiencies showed limited inter-annual variability although annual precipitation varied greatly among 2007-2009. However, N and P resorption of A. halodendron were not more efficient and proficient than those previously reported for other shrubs, indicating that the pioneer shrub in sand dune environments does not rely more heavily than other plants on the process of resorption to conserve nutrients. Incomplete resorption of nutrients in A. halodendron suggests that senesced-leaf fall would return litter with high quality to the soil, and thereby would indirectly improve soil nutrient availability. The restoration of desertified land, therefore, may be accelerated after A. halodendron pioneers into shifting sand dunes. |
英文关键词 | foliar nutrient concentration nutrient-resorption efficiency nutrient-resorption proficiency senesced vs. green leaves desertification soil nutrient availability |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000330234300006 |
WOS关键词 | NUTRIENT RESORPTION ; NITROGEN RESORPTION ; TEMPERATE GRASSLAND ; SEMIARID GRASSLAND ; FOLIAR-NITROGEN ; INNER-MONGOLIA ; LEAF TRAITS ; PATTERNS ; PROFICIENCY ; LEAVES |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183066 |
作者单位 | Chinese Acad Sci, Naiman Desertificat Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Li, YuLin,Jing, Chen,Mao, Wei,et al. N and P resorption in a pioneer shrub (Artemisia halodendron) inhabiting severely desertified lands of Northern China[J]. 中国科学院西北生态环境资源研究院,2014,6(2):174-185. |
APA | Li, YuLin,Jing, Chen,Mao, Wei,Cui, Duo,Wang, XinYuan,&Zhao, XueYong.(2014).N and P resorption in a pioneer shrub (Artemisia halodendron) inhabiting severely desertified lands of Northern China.JOURNAL OF ARID LAND,6(2),174-185. |
MLA | Li, YuLin,et al."N and P resorption in a pioneer shrub (Artemisia halodendron) inhabiting severely desertified lands of Northern China".JOURNAL OF ARID LAND 6.2(2014):174-185. |
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