Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 1385-1314 |
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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