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| Stability of topsoil aggregates under different reclamation modes in the dump of Haizhou opencast coal mine |
| LÜ Gang, XIAO Peng, LI Yexin, DONG Liang, DU Xinpeng |
| College of Environmental Science and Engineering, Liaoning Technical University, 123000, Fuxin, Liaoning, China |
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Abstract [Background] The stability of soil aggregates plays an important role in maintaining land productivity and regulating soil fertility. It is also one of the important indicators to reflect the soil structure. In order to explore the influences of different reclamation modes on the stability of soil aggregates, 5 reclamation modes of shrub (Amorpha fruticosa)forest,Ulmus pumila forest,Robinia pseudoacacia forest,mixed forests(Robinia pseudoacacia and U. pumila)and weeds in Haizhou opencast coal mine, Fuxin city of Liaoning province, were used as the research objects.[Methods] The dry sieving method and wet sieving method were used to measure soil mechanical aggregates, and the stability of soil aggregate index (R>0.25) and percentage of aggregate destruction (PAD), soil aggregate diameter index (mean mass diameter MWD, the geometric mean diameter GMD and the fractal dimension of soil the number of D) as the evaluation index, to analyze the characteristics of soil aggregate stability under different reclamation modes.[Results] 1) Big aggregate content(R>0.25)was used to reflect the soil structure of quality, big aggregate content(R>0.25) was 58%-63% in the dry sieve of different reclamation mode, and was 17.5%-37.43% in the wet sieve. Important indicators were the diameter of the soil aggregate mean mass diameter (MWD) and geometric mean diameter (GMD). 2) In the condition of dry sieving, there were MWD (2.27) and GMD (1.3) in mixed forest, MWD (1.56) and GMD (0.96) at least grassland. Under the condition of wet screening, MWD (2.97) and GMD (2.43) of Robinia pseudoacacia forest were the most, and MWD (1.16) and GMD (0.53) were the least in the grassland. 3) In fractal dimension, the fractal dimension of the dry sieves and wet sieves was 2.23-2.35 and 2.35-2.43, respectively. The correlation coefficients were 0.949, 0.610 and 0.514 under dry screen condition, respectively, and their correlation coefficients were 0.999, 0.276 and 0.282 under wet screen conditions, respectively. The he overall trend on the surface layer of soil in different reclamation modes for aggregate stability, soil aggregate diameter and aggregate destruction rate was better than that of weeds, the soil aggregate destruction rate was the lowest in shrub land, soil aggregate diameter index was better in the Robinia pseudoacacia and mixed forest, and soil stability index MWD and GMD were better in forest land.[Conclusions] The stability of soil aggregates were of positive correlation between the fractal dimension, and was positively correlated with the D value. In the process of transforming from micro aggregates (<0.25 mm) to 5 mm, the 1.00 mm and 2.00 mm aggregates were the more critical nodes. The comprehensive experimental results show that the soil structure in the dump was seriously damaged, the climatic environment of the soil where vegetation grew was poor, and the vegetation restoration was a slow process in improving the soil.
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Received: 06 December 2017
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| [1] |
卢金伟,李占斌. 土壤团聚体研究进展[J].水土保持研究,2002,9(1):81. LU Jinwei, LI Zhanbin. Advance in soi1 aggregate study[J]. Research of Soil and Water Conservation,2002,9(1):81.
|
| [2] |
郑子成,李廷轩,张锡洲,等. 不同土地利用方式下土壤团聚体的组成及稳定性研究[J].水土保持学报,2009,23(5):228. ZHENG Zicheng, LI Tingxuan, ZHANG Xizhou,et al. Study on the composition and stability of soil aggregates under different land use[J].Journal of Soil and Water Conservation,2009,23(5):228.
|
| [3] |
祁迎春,王益权,刘军,等. 不同土地利用方式土壤团聚体组成及几种团聚体稳定性指标的比较[J].农业工程学报,2011, 27(1):340. QI Yingchun, WANG Yiquan, LIU Jun, et al. Comparative study on composition of soil aggregates with different land use patterns and several kinds of soil aggregate stability index[J]. Transactions of the Chinese Society of Agricultural Engineering, 2011, 27(1):340.
|
| [4] |
李鉴霖,江长胜,郝庆菊. 土地利用方式对绍云山土壤团聚体稳定性及其有机碳的影响[J].环境科学,2014,35(12):4696. LI Jianlin,JIANG Changsheng,HAO Qingju. Impact of land use type on stability and organic carbon of soil aggregates in Jinyun Mountain[J].Environmental Science,2014,35(12):4696.
|
| [5] |
唐骏,党廷辉,薛江,等.植被恢复对黄土区煤矿排土场土壤团聚体特征的影响[J].生态学报,2016,36(16):5067. TANG Jun,DANG Tinghui,XUE Jiang,et al. Effects of vegetation restoration on soil aggregate characteristics of an opencast coal mine dump in the loess area[J].Acta Ecologica Sinica, 2016,36(16):5068.
|
| [6] |
安韶山,张玄,张扬,等. 黄土丘陵区植被恢复中不同粒级土壤团聚体有机碳分布特征[J].水土保持学报,2007,21(6):111. AN Shaoshan, ZHANG Xuan, ZHANG Yang,et al. Distribution of organic carbon in different soil aggregates size during revegetation in Hilly-Gully Region of Loess Plateau[J].Journal of Soil and Water Conservation,2007,21(6):111.
|
| [7] |
潘德成,吴祥云.煤矿区次生裸地水土保持与生态重建[M].北京:化学工业出版社,2012:24 PAN Decheng,WU Xiangyun. Water and soil conservation and ecological rebuilding at secondary bare land in coal-mining area[M].Beijing:Chemical Industry Press,2012:24.
|
| [8] |
王杨扬,赵中秋,原野,等.黄土区露天煤矿不同复垦模式对土壤水稳性团聚体稳定性的影响[J]农业环境科学学报,2017, 36(5):966. WANG Yangyang, ZHAO Zhongqiu, YUAN Ye, et al. Effects of different reclamation patterns on the stability of soil water-stable aggregates of an opencast mine in loess area[J]. Journal of Agro-Environment Science, 2017, 36(5):966.
|
| [9] |
王金满,郭凌俐,白中科,等.黄土区露天煤矿排土场复垦后土壤与植被的演变规律[J].农业工程学报,2013,29(21):223. WANG Jinman, GUO Lingli, BAI Zhongke, et al. Succession law of reclaimed soil and vegetation on opencast coal mine dump of loess area[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(21):223.
|
| [10] |
王凯,张亮,刘峰,等.阜新露天煤矿排土场边坡土壤质量分异特征[J].中国环境科学,2015,35(7):2119. WANG Kai, ZHANG Liang, LIU Feng, et al. Soil quality variability on dump slopes of opencast coalmine in Fuxin[J].China Environmental Science,2015,35(7):2119.
|
| [11] |
吕刚,傅昕阳,李叶鑫,等. 露天煤矿排土场复垦区不同植被类型枯落物持水特性研究[J].水土保持学报,2017,31(1):147. LV Gang,FU Xinyang,LI Yexin, et al. Study on water holding characteristics of litter in different vegetation types in the reclaimed land of open-cut coal mine dump[J].Journal of Soil and Water Conservation,2017,31(1):147.
|
| [12] |
胡慧蓉,田昆.土壤学实验指导教程[M].北京:中国林业出版社,2012:42. HU Huirong, TIAN Kun. Soil science experimental guidance course[M].Beijing:China Forestry Publisher, 2012:42.
|
| [13] |
刘文利,吴景贵,傅民杰,等.种植年限对果园土壤团聚体分布与稳定性的影响[J].水土保持学报,2014, 28(1):131. LIU Wenli,WU Jinggui,FU Minjie, et al. Effect of different cultivation years on composition and stability of soil aggregate fractions in orchard[J].Journal of Soil and Water Conservation,2014, 28(1):131.
|
| [14] |
姜敏,刘毅,刘闯,等. 丹江口库区不同土地利用方式土壤团聚体稳定性及分形特征[J].水土保持学报,2016,30(6):266. JIANG Min,LIU Yi,LIU Chuang, et al. Study on the stability and fractal characteristics of soil aggregates under different land use patterns in the Danjiangkou Reservoir[J].Journal of Soil and Water Conservation,2016,30(6):266.
|
| [15] |
杨培岭,罗远培,石元春. 用粒径的重量分布表征土壤分形特征[J].科学通报,1993,38(20):1897. YANG Peiling,LUO Yuanpei,SHI Yuanchun. Fractal feature of soil on expression by weight distribution of grain size[J].Chinese Science Bulletin,1993,38(20):1897.
|
| [16] |
SIX J,ELLIOT E T, PAUSTIAN K. Soil structure and soil organic matter; Ⅱ.A normalized stability index and the effect of mineralogy[J]Soil Science Society of America Journal, 2000, 64(3):1042.
|
| [17] |
周虎,吕贻忠,杨志臣,等.保护性耕作对华北平原土壤团聚体特征的影响[J].中国农业科学,2007(9):1976. ZHOU Hu, LÜ Yizhong, YANG Zhichen, et al. Effects of conservation tillage on soil aggregates in Huabei Plain, China[J].Scientia Agricultura Sinica,2007(9):1976.
|
| [18] |
安韶山,张扬,郑粉莉. 黄土丘陵区土壤团聚体分形特征及其对植被恢复的响应[J].中国水土保持科学,2008,6(2):69. AN Shaoshan, ZHANG Yang, ZHENG Fenli1.Fractal dimension of the soil aggregate and its responds to plant rehabilitation in the hilly-gully region of Loess Plateau[J].Science of Soil and Water Conservation,2008,6(2):69.
|
| [19] |
刘梦云,吴健利,刘丽雯,等.黄土台源土地利用方式对土壤水稳性团聚体稳定性影响[J].自然资源学报,2016,31(9):1573. LIU Mengyun, WU Jianli, LIU Liwen, et al. Stability characteristics of soil water-stable aggregates under different land-use patterns on the Loess Plateau[J].Journal of Natural Resources,2016,31(9):1573.
|
| [20] |
刘艳,查同刚,王伊棍,等. 北京地区栓皮栋和油松人工林土壤团聚体稳定性及有机碳特征[J].应用生态学报,2013,24(3):611. LIU Yan, ZHA Tonggang, WANG Yikun, et al. Soil aggregate stability and soil organic carbon characteristics in Quercus variabilis and Pinus tabulaeformis plantations in Beijing area[J].Chinese Journal of Applied Ecology,2013,24(3):611.
|
|
|
|
