Changes in Soil Aggregate-Associated Organic Carbon and Nitrogen after Ten Years under Different Land-Use and Soil-Management Systems in Indo-Gangetic Sodic Soil

被引：2
|
作者：
Mishra, V. K. [1 ]
Nayak, A. K. [1 ]
Singh, C. S. [1 ]
Jha, S. K. [1 ]
Tripathi, Rahul [2 ]
Shahid, Mohammad [2 ]
Raja, R. [2 ]
Sharma, D. K. [1 ]
机构：
[1] Cent Soil Salin Res Inst, Reg Res Stn, Lucknow, Uttar Pradesh, India
[2] Cent Rice Res Inst, Cuttack 753006, Orissa, India
来源：
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 2014年 / 45卷 / 10期
关键词：
Aggregate fractions; land-use system; mean weight diameter; soil organic carbon; water-stable aggregate; MATTER; FOREST; SEQUESTRATION; CULTIVATION; PHOSPHORUS; FRACTIONS; MECHANISMS; STABILITY; TURNOVER; DYNAMICS;
D O I：
10.1080/00103624.2013.875195
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A study was conducted to evaluate the effects of different land uses and soil-management systems (LU and SMS) on key soil physicochemical indicators [aggregate stability, distribution of soil organic carbon (SOC), and nitrogen (N) in aggregate fractions] and to interpret significance of long-term cultivation of agroforestry plantations [Prosopis juliflora L. (AFP) and Casuarina equisetifolia L. (AFC)], horticultural plantations [(Tamarindus indica (HI) and Syzygium cumini (HJ)], and rice-wheat system (RW) in sodic soil of the Indo-Gangetic plain. Soil samples collected from the different LU and SMS plots were analyzed. The barren sodic soil (BSS) exhibited the least mean weight aggregate diameter (0.21), whereas AFP recorded the greatest (0.59). Total N content in surface soil under RW system was about the same as AFP, AFC, HI, and HJ and significantly greater than BSS. Across the LU and SMS except BSS, microaggregates recorded a narrower C/N ratio than macro- and mesoaggregates.
引用
收藏
页码：1293 / 1304
页数：12
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