Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes

doi:10.1016/j.apsoil.2021.104045

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	Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes
	Wang,Zhenghong ; Wubshet,Tewodros Tesfaye ; Chen,Huafang ; Wu,Liqing ; Yang,Huizhao; Yang,Jianbo ; Goldberg,Stefanie Daniela ; Xu,Jianchu; Gui,Heng
	2021
发表期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
卷号	167 页码:104045
摘要	Land use changes are of serious concern due to its effects on soil carbon stock, which is second largest anthropogenic source of atmosphere CO2. To better understand these effects in typical and fragile ecosystems like dry-hot valley regions, we quantified changes in soil properties (pH, organic carbon, total nitrogen, phosphorus, microbial biomass carbon contents, activities of beta-glucosidase, beta-N-acetyl-glucosaminidase, acid phosphatase) and CO2 efflux before (degraded grassland) and after (mango plantation) land use change in a dry-hot valley region. Most soil chemical properties remained unaffected after conversion due to generally low regional nutrient levels. Principal component analysis revealed the decline of soil heterogeneity of the selected properties (pH, SOC, TN, TP, AP), which will be useful for future unified management. Compared to grassland, CO2 efflux in mango plantation increased by 20-69% after land use change, more factors and their interactions were responsible for CO2 efflux from soil in mango plantations. The temperature sensitivity (Q(10): 0.68-1.98) of CO2 efflux in both land use types was low due to the low soil moisture at high temperatures. Soil water content was the primary factor affecting CO2 efflux in the dry-hot valley region, followed by microbial biomass carbon. In summary, the CO2 efflux increased shortly after the land use change (within first year), even though absence of significant quantitative change of soil properties, and low temperature sensitive (Q(10)) before and after conversion and its difference between land use types is opposite in dry and wet season.
关键词	Fragile ecosystems Agricultural and ecological transformation Carbon emission Land use Enzyme activities LAND-USE CHANGE MICROBIAL COMMUNITY STRUCTURE ENZYME-ACTIVITIES BETA-GLUCOSIDASE ORGANIC-CARBON WATER CONTENT RESPIRATION BIOMASS TEMPERATURE NITROGEN
DOI	10.1016/j.apsoil.2021.104045
WOS记录号	WOS:000691498900008
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73178
专题	中国科学院昆明植物研究所
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Honghe Ctr Mt Futures, Kunming 654400, Yunnan, Peoples R China 4.World Agroforestry Ctr ICRAF, East & Cent Asia Reg Off, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Wang,Zhenghong,Wubshet,Tewodros Tesfaye,Chen,Huafang,et al. Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes[J]. APPLIED SOIL ECOLOGY,2021,167:104045.
APA	Wang,Zhenghong.,Wubshet,Tewodros Tesfaye.,Chen,Huafang.,Wu,Liqing.,Yang,Huizhao.,...&Gui,Heng.(2021).Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes.APPLIED SOIL ECOLOGY,167,104045.
MLA	Wang,Zhenghong,et al."Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes".APPLIED SOIL ECOLOGY 167(2021):104045.

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