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Carbon Storage Dynamics in Alfalfa (Medicago sativa) Fields in the Hilly-Gully Region of the Loess Plateau, China
Deng, L (Deng, Lei)[ 1 ]; Wang, KB (Wang, Kai-Bo)[ 2 ]; Li, JP (Li, Jian-Ping)[ 3 ]; Shangguan, ZP (Shangguan, Zhou-Ping)[ 1 ]; Sweeney, S (Sweeney, Sandra)[ 4 ]
2014-09-15
发表期刊CLEAN-SOIL AIR WATER
卷号42期号:9页码:1253-1262
文章类型期刊论文
摘要

Alfalfa (Medicago sativa) has been widely employed in the dryland region of the Loess Plateau, China to improve soil and water conservation and to develop livestock production. Our objective was to study the dynamics of plant and soil organic carbon (SOC) pools following the conversion of sloping farmland to alfalfa fields over a period of 30 years. The succession gradient is composed of seven differently aged alfalfa fields (0, 5, 9, 13, 16, 23, 30 years). The results show that soil C storage (0-100cm) dynamics were consistent with belowground biomass storage with increased planting years, but C storage always increased with the number of planting years in the 0-5cm soil layer. Planted perennial alfalfa resulted in a decline in soil C storage in the 0-100cm soil depth in the early period (nine years). During the late succession stage of alfalfa (13 years) soil C storage tends to recover, and after 16 years, storage values again dropped. However, it had recovered by 30 years at which time alfalfa productivity was very low. Vegetation C storage was mainly decided by the belowground biomass and ecosystem C storage dynamics was consistent with soil C storage. Vegetation biomass, root/shoot ratio, SOC, soil total nitrogen, and total phosphorus were the main factors affecting C storage in the entire alfalfa field ecosystem. The results suggest that C storage in vegetation is directly related to plant productivity, C storage in the soil throughout the entire alfalfa field ecosystem was not only related to plant productivity, but also to SOC and soil nutrients.

关键词Carbon Sequestration Ecosystems Soil Organic Carbon Space-for-time Method
DOI10.1002/clen.201300079
收录类别SCIE
语种英语
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9699
专题生态环境研究室
通讯作者Shangguan, ZP (Shangguan, Zhou-Ping)[ 1 ]
作者单位1.State Key Laboratory of Soil Erosionand Dryland Farming on the LoessPlateau, Northwest A&F University,Yangling, Shaanxi P. R. China;
2.State Key Laboratory of Loess andQuaternary Geology, Institute of EarthEnvironment, Chinese Academy ofSciences, Xi’an, P. R. China;
3.School of Agriculture, NingxiaUniversity, Yinchuan, P. R. China;
4.Institute of Environmental Sciences,University of the Bosphorus, Istanbul,Turkey
推荐引用方式
GB/T 7714
Deng, L ,Wang, KB ,Li, JP ,et al. Carbon Storage Dynamics in Alfalfa (Medicago sativa) Fields in the Hilly-Gully Region of the Loess Plateau, China[J]. CLEAN-SOIL AIR WATER,2014,42(9):1253-1262.
APA Deng, L ,Wang, KB ,Li, JP ,Shangguan, ZP ,&Sweeney, S .(2014).Carbon Storage Dynamics in Alfalfa (Medicago sativa) Fields in the Hilly-Gully Region of the Loess Plateau, China.CLEAN-SOIL AIR WATER,42(9),1253-1262.
MLA Deng, L ,et al."Carbon Storage Dynamics in Alfalfa (Medicago sativa) Fields in the Hilly-Gully Region of the Loess Plateau, China".CLEAN-SOIL AIR WATER 42.9(2014):1253-1262.
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