干旱区生态环境知识资源中心(Arid): Spatial patterns of soil stoichiometry and their responses to land use in a desertified area: A case study of China's Horqin Sandy Land

Arid

DOI	10.1002/ldr.4920
	Spatial patterns of soil stoichiometry and their responses to land use in a desertified area: A case study of China's Horqin Sandy Land
	Cao, Wenjie; Li, Yuqiang; Chen, Yun; Chen, Yinping; Wang, Xuyang
通讯作者	Li, YQ
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2024
卷号	35 期号:1 页码:350-359
英文摘要	Ecological stoichiometry facilitates the understanding of biogeochemical cycles by studying the balance among multiple elements in ecosystems. However, the spatial patterns of soil stoichiometry and their responses to land use in desertified land are unclear. In this study, we selected 525 sample points to collect topsoil (0-20 cm) samples throughout China's Horqin Sandy Land and measured soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP). We then calculated stoichiometric ratios (C:N:P). SOC (8.7 g kg(-1)), TN (0.9 g kg(-1)), and TP (0.3 g kg(-1)) were lower in this region than in Chinese and global terrestrial ecosystems due to aeolian desertification. SOC, TN, C:P, and N:P were significantly (p < 0.05) higher in grassland, followed by woodland, cropland, and sandy land. This sequence may result from the large number of dead roots that participate in the SOC turnover in grassland. TP was significantly higher in cropland due to fertilization. C:N did not differ significantly (p > 0.05) among grassland, woodland, and cropland because of the strong coupling relationship between SOC and TN. The values of SOC, TN, TP, C:P, and N:P in the Horqin Sandy Land were high in the north (dominated by mountain woodland and grassland) and were low in the south (dominated by desertified land). SOC, TN, and TP contents and C:N:P ratios were mainly affected by mean annual temperature (29.6%), land use (11.5%), and bulk density (11.4%) through their influence on soil microbial metabolism, litter and nutrient input, and soil structure, respectively. The results provide information on the overall changes in soil stoichiometry in the Horqin Sandy Land and its responses to land-use changes, and can therefore guide ecological restoration in semiarid regions affected by desertification in the modern context of climate change.
英文关键词	C:N:P environmental factor land use nutrient limitation semiarid area soil stoichiometry
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001070614300001
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404834
推荐引用方式 GB/T 7714	Cao, Wenjie,Li, Yuqiang,Chen, Yun,et al. Spatial patterns of soil stoichiometry and their responses to land use in a desertified area: A case study of China's Horqin Sandy Land[J],2024,35(1):350-359.
APA	Cao, Wenjie,Li, Yuqiang,Chen, Yun,Chen, Yinping,&Wang, Xuyang.(2024).Spatial patterns of soil stoichiometry and their responses to land use in a desertified area: A case study of China's Horqin Sandy Land.LAND DEGRADATION & DEVELOPMENT,35(1),350-359.
MLA	Cao, Wenjie,et al."Spatial patterns of soil stoichiometry and their responses to land use in a desertified area: A case study of China's Horqin Sandy Land".LAND DEGRADATION & DEVELOPMENT 35.1(2024):350-359.