PDF Download

[1]ZHU Hansong,LI Xuezhang,JIA Xiaoxu,et al.Characteristics of Response of Soil Carbon and Nitrogen Fractions to Caragana korshinskii Kom in Grassland of Wind-Water Erosion Crisscross Region[J].Research of Soil and Water Conservation,2018,25(05):29-35.

Copy

Characteristics of Response of Soil Carbon and Nitrogen Fractions to Caragana korshinskii Kom in Grassland of Wind-Water Erosion Crisscross Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 29-35 Column: Public date: 2018-09-06

Title:: Characteristics of Response of Soil Carbon and Nitrogen Fractions to Caragana korshinskii Kom in Grassland of Wind-Water Erosion Crisscross Region

Author(s):: ZHU Hansong^1,2, LI Xuezhang³, JIA Xiaoxu⁴, SHAO Mingan^1,4, WEI Xiaorong^1,2; 1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Keywords:: wind-water erosion crisscross region; grasslands; Caragana korshinskii Kom; organic carbon fractions; nitrogen fractions; different growth years

CLC:: S153

DOI:: -

Abstract:: In order to reveal the characteristics of response of soil carbon and nitrogen fractions to Caragana korshinskii Kom in grasslands in the study area, relative density fraction method was used to study the distribution of soil carbon and nitrogen fractions in the 0-40 cm soil layer in grasslands and adjacent Caragana stands with different growth years in wind-water erosion crisscross region. The results showed that soil heavy fraction organic carbon and total nitrogen varied relatively little after conversion of grasslands to Caragana stands (-0.19~0.06 g/kg and -0.001~0.017 g/kg), contrarily, light fraction organic carbon and total nitrogen changed significantly after the conversion,and performed differences with different growth years and soil layers. The soil organic carbon and total nitrogen stocks in the 0-40 cm soil increased by 10.94 Mg C/hm² and 0.07 Mg N/hm² in 25-year Caragana, respectively, and light fraction organic carbon and total nitrogen stocks increased by 2.41 Mg C/hm² and 0.11 Mg N/hm², respectively;the light fraction organic carbon stock in the 0-40 cm soil decreased by 4.54 Mg C/hm², and the heavy fraction organic carbon and total organic carbon stocks increased by 6.26 Mg C/hm² and 1.72 Mg C/hm² in 40-year Caragana, respectively; however,the soil total nitrogen, light fraction and heavy fraction total nitrogen stocks decreased by 0.73 Mg·N/hm²,0.44 Mg·N/hm² and 0.29 Mg·N/hm², respectively. These findings indicated that changes of soil organic carbon and total nitrogen after conversion of grasslands to Caragana stands were attributed to changes of soil heavy fraction organic carbon and light fraction total nitrogen.

References:: [1] 魏孝荣,邵明安,高建伦.黄土高原沟壑区小流域土壤有机碳与环境因素的关系[J].环境科学,2008,29(10):2879-2884.
[2] Ramnarine R, Voroney R P, Wagnerriddle C, et al. Conventional and no-tillage effects on the distribution of crop residues and light fraction organic matter[J]. Soil Science Society of America Journal, 2015,79(1):74-80.
[3] Han H, Li X, Niu D, et al. Conventional tillage improves the storage of soil organic carbon in heavy fractions in the Loess Plateau China[J]. Journal of Arid Land, 2015,7(5):636-643.
[4] Wei X, Huang L, Xiang Y, et al. The dynamics of soil OC and N after conversion of forest to cropland[J]. Agricultural & Forest Meteorology, 2014,194(3):188-196.
[5] Blair G J, Lefroy R, Lisle L. Soil carbon fractions based on their degree of oxidation, and the development of a carbon management index for agricultural systems[J]. Australian Journal of Agricultural Research, 1995,46(7):393-406.
[6] Qiu L, Wei X, Ma T, et al. Effects of land-use change on soil organic carbon and nitrogen in density fractions and soil ¹³C and ¹⁵N in semiarid grasslands[J]. Plant & Soil, 2015,390(1/2):419-430.
[7] 王文颖,王启基,鲁子豫.高寒草甸土壤组分碳氮含量及草甸退化对组分碳氮的影响[J].中国科学D辑:地球科学,2009,39(5):647-654.
[8] Dalal R C, Mayer R J. Long term trends in fertility of soils under continuous cultivation and cereal cropping in southern Queensland. V. Rate of loss of total nitrogen from the soil profile and changes in carbon:nitrogen ratios[J]. Soil Research, 1986,24(4):493-504.
[9] 刘学彤,魏艳春,杨宪龙,等.水蚀风蚀交错带不同退耕模式对土壤有机碳及全氮的影响[J].应用生态学报,2016,27(1):91-98.
[10] Wei X, Shao M, Fu X, et al. Distribution of soil organic C, N and P in three adjacent land use patterns in the northern Loess Plateau, China[J]. Biogeochemistry, 2009,96(1/3):149-162.
[11] Wei X, Shao M, Fu X, et al. Changes in soil organic carbon and total nitrogen after 28 years grassland afforestation:effects of tree species, slope position, and soil order[J]. Plant & Soil, 2010,331(1/2):165-179.
[12] Fu X, Shao M, Wei X, et al. Soil organic carbon and total nitrogen as affected by vegetation types in Northern Loess Plateau of China[J]. Geoderma, 2010,155(1):31-35.
[13] 杨静,孙宗玖,杨合龙,等.封育年限对蒿类荒漠土壤有机碳组分及其碳、氮特征的影响[J].草业科学,2016,33(4):564-572.
[14] Shang S, Jiang P, Chang S X, et al. Soil organic carbon in particle size and density fractionations under four forest vegetation-land use types in subtropical China[J]. Forests, 2014,5(6):1391-1408.
[15] Swanston C W, Caldwell B A, Homann P S, et al. Carbon dynamics during a long-term incubation of separate and recombined density fractions from seven forest soils[J]. Soil Biology and Biochemistry, 2002,34(8):1121-1130.

Similar References:

Memo

Last Update: 1900-01-01