Arid
DOI10.1007/s10705-011-9475-8
Soil carbon pools under poplar-based agroforestry, rice-wheat, and maize-wheat cropping systems in semi-arid India
Benbi, D. K.; Brar, Kiranvir; Toor, A. S.; Singh, Pritpal; Singh, Hargopal
通讯作者Benbi, D. K.
来源期刊NUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
出版年2012
卷号92期号:1页码:107-118
英文摘要

Labile fractions of soil organic C are considered important indicators of soil quality as these can respond rapidly to land-use changes and agricultural management. We studied the impact of three different land-use systems viz. poplar-based agroforestry involving wheat-legume rotation, rice-wheat and maize-wheat agroecosystems, on dynamics of total organic C (TOC), oxidisable soil organic C (SOC), very labile, labile, less labile, and recalcitrant C fractions, water extractable organic carbon (WEOC), hot water soluble C (HWC), microbial biomass C (MBC), and mineralizable C in the semi-arid subtropical India. The maize-wheat and agroforestry systems had 65-88% higher SOC stocks than the rice-wheat system and were characterized by predominantly labile C. About 56-60% of the total organic C in maize-wheat and agroforestry systems occurred as labile and very labile C compared to 37% under rice-wheat rotation. Contrarily, the majority of organic C (63%) in rice-wheat soils was stabilized in less labile and recalcitrant forms. The HWC and MBC were also higher in maize-wheat and agroforestry systems as opposed to the rice-wheat system. In the discriminant function analysis, a composite of indicators involving TOC, recalcitrant C and total N correctly distinguished the soils under the three systems. The results suggested that in agroforestry and maize-wheat systems the organic C in soils was less stable and thus could be lost following the land-use change.


英文关键词C Land-use Labile carbon Recalcitrant carbon Organic carbon fractions Soil microbial biomass
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000298101300009
WOS关键词MICROBIAL BIOMASS ; ORGANIC-MATTER ; MANAGEMENT-PRACTICES ; ARABLE SOILS ; SEQUESTRATION ; DYNAMICS ; YIELD ; AGROECOSYSTEM ; FRACTIONS ; CHERNOZEM
WOS类目Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174202
作者单位Punjab Agr Univ, Dept Soil Sci, Ludhiana 141004, Punjab, India
推荐引用方式
GB/T 7714
Benbi, D. K.,Brar, Kiranvir,Toor, A. S.,et al. Soil carbon pools under poplar-based agroforestry, rice-wheat, and maize-wheat cropping systems in semi-arid India[J],2012,92(1):107-118.
APA Benbi, D. K.,Brar, Kiranvir,Toor, A. S.,Singh, Pritpal,&Singh, Hargopal.(2012).Soil carbon pools under poplar-based agroforestry, rice-wheat, and maize-wheat cropping systems in semi-arid India.NUTRIENT CYCLING IN AGROECOSYSTEMS,92(1),107-118.
MLA Benbi, D. K.,et al."Soil carbon pools under poplar-based agroforestry, rice-wheat, and maize-wheat cropping systems in semi-arid India".NUTRIENT CYCLING IN AGROECOSYSTEMS 92.1(2012):107-118.
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