干旱区生态环境知识资源中心(Arid): Conversion effects of farmland to Zanthoxylum bungeanum plantations on soil organic carbon mineralization in the arid valley of the upper reaches of Yangtze River, China

Arid

DOI	10.1371/journal.pone.0262961
	Conversion effects of farmland to Zanthoxylum bungeanum plantations on soil organic carbon mineralization in the arid valley of the upper reaches of Yangtze River, China
	Lv, Chen; Saba, Tahseen; Wang, Jingyan; Hui, Wenkai; Liu, Wanlin; Fan, Jiangtao; Wu, Jiahui; Liu, Xianzhi; Gong, Wei
通讯作者	Wang, JY ; Hui, WK ; Gong, W
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2022
卷号	17 期号:2
英文摘要	Farmland conversion to forest is considered to be one of the effective measures to mitigate climate change. However, the impact of farmland conversion to forest land or grassland on soil CO2 emission in arid areas is unclear due to the lack of comparative information on soil organic carbon (SOC) mineralization of different conversion types. The SOC mineralization in 0-100 cm soil layer in farmland (FL), abandoned land (AL) and different ages (including 8, 15, 20 and 28 years) of Zanthoxylum bungeanum plantations were measured by laboratory incubation. The size and decomposition rate of fast pool (C-f) and slow pool (C-s) in different land-use types and soil layers were estimated by double exponential model. The results showed that: 1) Farmland conversion increased the cumulative CO2-C release (C-min) and SOC mineralization efficiency, and those indexes in AL were higher than that in Z. bungeanum plantations. The C-min and SOC mineralization efficiency of 0-100 cm soil increased with the ages of Z. bungeanum plantation. Both C-min and SOC mineralization efficiency decreased with the increase of soil depth; 2) Both soil C-f and C-s increased after farmland converted to Z. bungeanum plantations and AL. The C-s in the same soil layer increased with the ages of Z. bungeanum plantation, and the C-f showed a V type with the increased ages of Z. bungeanum plantation. The C-f and C-s decreased with the increase of soil depth in all land-use types; 3) Farmland conversion increased the decomposition rate of C-f (k(1)) in all soil layer by 0.008-0.143 d(-1) and 0.082-0.148 d(-1) in Z. bungeanum plantations and AL, respectively. The k(1) was obviously higher in the 0-20 cm soil layer than that in other soil layers, while the decomposition rate of C-s (k(2)) was not affected by FL conversion and soil depth; and 4) The initial soil chemical properties and enzyme activity affected SOC mineralization, especially the concentrations of total organic nitrogen (TON), SOC, easily oxidizable organic carbon (EOC) and microbial biomass carbon (MBC). It indicated that the conversion of farmland to Z. bungeanum plantations and AL increases SOC mineralization, especially in deeper soils, and it increased with the ages. The conversion of farmland to Z. bungeanum plantation is the optimal measure when the potential C sequestration of plant-soil system were taken in consideration.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000789273600017
WOS关键词	MICROBIAL BIOMASS ; TEMPERATURE SENSITIVITY ; STAND AGE ; RESPIRATION ; NITROGEN ; MATTER ; DECOMPOSITION ; COMMUNITY ; FERTILIZATION ; RESTORATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394022
推荐引用方式 GB/T 7714	Lv, Chen,Saba, Tahseen,Wang, Jingyan,et al. Conversion effects of farmland to Zanthoxylum bungeanum plantations on soil organic carbon mineralization in the arid valley of the upper reaches of Yangtze River, China[J],2022,17(2).
APA	Lv, Chen.,Saba, Tahseen.,Wang, Jingyan.,Hui, Wenkai.,Liu, Wanlin.,...&Gong, Wei.(2022).Conversion effects of farmland to Zanthoxylum bungeanum plantations on soil organic carbon mineralization in the arid valley of the upper reaches of Yangtze River, China.PLOS ONE,17(2).
MLA	Lv, Chen,et al."Conversion effects of farmland to Zanthoxylum bungeanum plantations on soil organic carbon mineralization in the arid valley of the upper reaches of Yangtze River, China".PLOS ONE 17.2(2022).