Knowledge Resource Center for Ecological Environment in Arid Area
Changes in morphology and soil nutrient patterns of nebkhas in arid regions along a precipitation gradient | |
Luo Weicheng; Zhao Wenzhi; Liu Bing; Ren Heng | |
来源期刊 | 寒旱区科学 |
ISSN | 1674-3822 |
出版年 | 2021 |
卷号 | 13期号:3页码:1674-3822 |
英文摘要 | Nebkhas,discrete mounds of sand and vegetation,are a common landscape feature critical to the stability of desert ecosystems and supported by limited precipitation.Nebkha morphology and spatial pattern vary in landscapes,but it is unclear how they change along precipitation gradients in arid and semi-arid regions.In this study we determined morphology and soil nutrient patterns of nebkha from different regions of northwestern China.The objective of this study was to understand zonal differences among nebkhas and how morphological characteristics and soil nutrient patterns of nebkha change along a precipitation gradient in northwestern China.Our results shows that mean annual precipitation (MAP) had significant effects on morphological characteristics of nebkhas such as height,area,and volume which significantly decreased with an increase in MAP.MAP had significant positive effects on shrub cover and species richness of nebkha.Soil nutrients such as soil organic matter (SOM),total carbon (TC),total nitrogen (TN),and total phosphorus (TP) in the 0-10 cm layer increased with an increase of MAP,and soil nutrient content within nebkhas was higher than in inter-nebkha areas.We concluded that nebkhas are "fertile islands" with an important role in ecosystem dynamics in study regions.Further,MAP is a key factor which determined zonal differences,morphological,and soil nutrients patterns of nebkhas.However,disturbance,such as animal grazing,and planted sand-stabilizing vegetation accelerated the degeneration of nebkha landscapes.We recommend implementation of protective measures for nebkhas in arid and semi-arid areas of China. |
英文关键词 | Nebkha morphology soil nutrient precipitation gradient arid and semi-arid lands |
类型 | Article |
语种 | 英语 |
国家 | 中国 |
收录类别 | CSCD |
WOS类目 | Meteorology & Atmospheric Sciences |
CSCD记录号 | CSCD:6999643 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/365113 |
作者单位 | Luo Weicheng, Linze Inland River Basin Research Station,Chinese Ecosystem Research Network,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhao Wenzhi, Linze Inland River Basin Research Station,Chinese Ecosystem Research Network,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Liu Bing, Linze Inland River Basin Research Station,Chinese Ecosystem Research Network,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin,Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Ren Heng, Linze Inland River Basin Research Station,Chinese Ecosystem Research Network,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences... |
推荐引用方式 GB/T 7714 | Luo Weicheng,Zhao Wenzhi,Liu Bing,et al. Changes in morphology and soil nutrient patterns of nebkhas in arid regions along a precipitation gradient[J],2021,13(3):1674-3822. |
APA | Luo Weicheng,Zhao Wenzhi,Liu Bing,&Ren Heng.(2021).Changes in morphology and soil nutrient patterns of nebkhas in arid regions along a precipitation gradient.寒旱区科学,13(3),1674-3822. |
MLA | Luo Weicheng,et al."Changes in morphology and soil nutrient patterns of nebkhas in arid regions along a precipitation gradient".寒旱区科学 13.3(2021):1674-3822. |
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