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[1]WANG Chunyan,XIE Xianjian,ZHOU Guiyao,et al.Fractal Features of Soil Aggregates and Distribution of Alkaline Hydrolytic Nitrogen in Different Types of Eucalyptus grandis Plantations[J].Research of Soil and Water Conservation,2015,22(03):88-92,97.

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Fractal Features of Soil Aggregates and Distribution of Alkaline Hydrolytic Nitrogen in Different Types of Eucalyptus grandis Plantations

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 03 Page number: 88-92,97 Column: Public date: 2015-06-28

Title:: Fractal Features of Soil Aggregates and Distribution of Alkaline Hydrolytic Nitrogen in Different Types of Eucalyptus grandis Plantations

Author(s):: WANG Chunyan¹, XIE Xianjian², ZHOU Guiyao³, WEN Ding⁴, LIANG Yufang⁵, Lü Yuliang¹; 1. College of Geographical Science, Southwest University, Chongqing 400715, China;
2. School of Geography and Resources Science, Neijiang Normal University, Neijiang, Sichuan 641000, China;
3. Institute of Agriculture Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China;
4. Institute of Geographic Sciences and Natural Resources Research, University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:: Eucalyptus Grandis plantations; soil aggregates; fractal dimension; alkaline hydrolytic nitrogen

CLC:: S152.4

DOI:: -

Abstract:: Understanding the fractal characteristics of soil aggregates and alkaline hydrolytic nitrogen contents in Eucalyptus grandis plantations in the hilly region of Sichuan Basin was necessary to know the impact of Eucalyptus grandis plantations on soil stability and soil nutrient in this region. In this study, soils covered by 3.5-year pure Eucalyptus grandis, Eucalyptus grandis + fruits and Eucalyptus grandis + grain crops modes were selected as research examples, while abandoned farmland was taken as the control. Fractal theory was used as analytical method to investigate the fractal characteristics of soil aggregates and distribution of alkaline hydrolytic nitrogen content influenced by soil aggregates. Results showed that contents of soil aggregates presented the trend of increase first and decrease later with the decrease of soil aggregate sizes, the soil aggregates with 2～5 mm size played an important role in soil structure. Soil fractal dimension followed the sequence of abandoned farmland > Eucalyptus grandis + grain crops > Eucalyptus grandis + fruits > pure Eucalyptus grandis, while alkaline hydrolytic nitrogen contents in soil aggregates followed the trend of abandoned farmland > Eucalyptus grandis + grain crops > Eucalyptus grandis + fruits > pure Eucalyptus grandis. Both soil fractal value and the alkaline hydrolytic nitrogen content of Eucalyptus grandis plantations were lower compared with abandoned farmland, indicating that Eucalyptus grandis growth would contribute to control soil erosion and cause losses of soil nutrients and fertility. Content of alkaline hydrolytic nitrogen mainly concentrated in fine sand and gravel with diameters of < 0.25 mm and 0.25～0.5 mm. Correlation analysis indicated that soil alkaline hydrolytic nitrogen contents had a negative correlation with those soils aggregates with 0.25～0.5 mm size, significantly positively correlated with those with 2～5 mm size. The study scientifically evaluated the impact of Eucalyptus grandis plantations on soil structure and nutrients, providing a reasonable management model for soil and water conservation and fertility maintenance in the hilly region of Sichuan Basin.

References:: [1] 彭新华,张斌,赵其国.土壤有机碳库与土壤结构稳定性关系的研究进展[J].土壤学报,2004,41(4):618-623.
[2] 胡云锋,刘纪远,庄大方,等.不同土地利用/土地覆盖下土壤粒径分布的分维特征[J].土壤学报,2005,42(2):336-339.
[3] 刘金福,洪伟.不同起源格式栲林地的土壤分形特征[J].山地学报,2001,19(6):565-570.
[4] 杨培岭,罗远培,石元春.用粒径的重量分布表征的土壤分形特征[J].科学通报,1993,38(20):1896-1899.
[5] Nasholm T, Ekblad A, Nordin A, et al. Boreal forest plants take up organic nitrogen[J]. Nature,1998,392(6679):914-916.
[6] Dormaar J F, Smoliak S, Willms W D. Distribution of nitrogen fractions in grazed and ungrazed fescue grassland Ah horizons[J]. Journal of Range Management,1990.43(1):6-9.
[7] 王夏晖,刘军.不同施肥方式下土壤氮素的运移特征研究[J].土壤通报,2002,33(3):202-206.
[8] 晁逢春.氮对烤烟生长及烟叶品质的影响[D].北京:中国农业大学,2003.
[9] 施春键,庄秋丽,李琪,等.东北地区不同纬度农田土壤碱解氮的刨面分布[J].生态学杂志,2007,26(4):501-504.
[10] 张振明,宋思铭,吴海龙,等.森林土壤碱解氮和全磷空间分布规律[J].东北林业大学学报,2011,39(5):77-80.
[11] 吕国红,周广胜,周莉,等.盘锦湿地芦苇群落土壤碱解氮及溶解性有机碳季节动态[J].气象与环境学报,2006,22(4):77-80.
[12] 张忠启,于法展,李保杰.土壤碱解氮空间变异与合理采样点数量研究[J].水土保持研究,2013,20(2):59-63.
[13] 郑郁,李占斌,李鹏,等.金沙江干热河谷区不同土地利用方式下的土壤特性分异特征[J].水土保持研究,2010,17(1):174-177.
[14] 黄小娟,郝庆菊,袁雪.耕作方式对紫色水稻土微团聚体分形特征影响的研究[J].中国农学通报,2012,28(6):97-102.
[15] 孙天聪,李世清,邵明安.长期施肥对褐土有机碳和氮素在团聚体中分布的影响[J].中国农业科学,2005,38(9):1841-1848.
[16] 罗世琼,杨宇虹,晋艳,等.长期培肥对烤烟-小麦轮作红壤各级团聚体氮及其酶活性的影响[J].水土保持学报,2012,26(4):127-132.
[17] 张国华,张展羽,王倪进,等.南方红壤丘陵区不同生态恢复措施对土壤质量的影响[J].水利水电科技进展,2007,27(5):19-22.
[18] 汪小兰,蒋先军,曹良元,等.季节变化对不同形态氮素在土壤团聚体中分布的影响[J].西南大学学报:自然科学版,2013,35(3):133-133.
[19] 王燕高,胡庭兴.我国引种巨桉及其研究进展[J].森林工程,2005,21(4):1-4.
[20] 石薇,龚伟,胡庭兴,等.然林及坡耕地转变为巨桉林后土壤抗蚀性变化[J].四川林业科技,2011,32(3):18-22.
[21] Zhang D, Zhang J, Yang W, et al. Effects of afforestation with Eucalyptus grandis on soil physicochemical and microbiological properties[J]. Soil Research,2012,50(2):167-176.
[22] 刘合明,杨志新,刘树庆.不同粒径土壤活性有机碳测定方法的探讨[J].生态环境,2008,17(5):2046-2049.
[23] 张保华.长江上游典型区域森林土壤结构体形成和稳定性机制分析[J].聊城大学学报:自然科学版,2007,20(1):12-17.
[24] 石辉.转移矩阵法评价土壤团聚体的稳定性[J].水土保持通报,2006,26(3):91-95.
[25] 李阳兵,谢德体.不同土地利用方式对岩溶山地土壤团粒结构的影响[J].水土保持学报,2001,15(4):122-125.
[26] 谢贤健,张继.巨桉人工林下土壤团聚体稳定性及分形特征[J].水土保持学报,2012,26(6):175-179.
[27] 山仑,徐炳成.黄土高原半干旱地区建设稳定人工草地的探讨[J].草业学报,2009,18(2):1-2.
[28] 刘敏英,郑子成,李廷轩.不同植茶年限土壤团聚体的分布特征及稳定性研究[J].茶叶科学,2012,32(5):402-410.
[29] 李阳兵,魏朝富,谢德体,等.岩溶山区植被破坏前后土壤团聚体分形特征研究[J].土壤通报,2006,37(1):51-55.
[30] 徐柳斌,陆梅,向仕敏.滇西山地桉树林土壤物理性质研究[J].山东林业科技,2007(6):41-43.
[31] 石箭华,孟广涛,李品荣,等.滇中不同植物群落土壤团聚体组成及养分特征[J].水土保持学报,2011,25(4):183-187.
[32] 张丹桔,张健,杨万勤,等.一个年龄序列巨桉人工林植物和土壤生物多样性[J].生态学报,2013,33(13):3947-3962.

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