华北半干旱平原区表层土壤盐分累积的影响因素分析

摘要/Abstract

摘要： 定量评价各因子对盐渍区表层(0~5 cm)土壤盐分累积的影响,以华北半干旱平原为研究区,综合考虑盐分来源、盐分化学组成、地下水状况、区域气候,地形条件等内外影响因素,应用通径分析方法评价各影响因子强度。结果表明:各影响因素通过直接和间接作用于表层土壤积盐过程,总体看盐源对表层土壤积盐影响强度最大,其次是盐分组成,再者是地下水状况,而区域气候和地形的影响较小。单因素而言,反映盐源的Sal_5-10、反映土壤盐分组成的SAR和反映地下水状况的TDS是主要的控制因素。研究结果为认识华北半干旱平原土壤盐渍化过程及影响机制提供参考依据。

关键词: 半干旱平原, 盐分累积, 影响因素, 通径分析

Abstract: Salinity status and salinization of the surface soil are the ultimately reflections of accumulation and migration of surface soil salinity under the dry season climatic conditions. They are the results of the combined effects of many factors. Thus, how to quantitatively evaluate each factor is very important to recognize the soil salinity cumulative process. In this paper, the surface(0-5 cm)soils of semi-arid North China Plain Saline area were studied. Internal and external influencing factors such as sources of salt, salt content of subsoil 5-10 cm and intermediate soil 20-30 cm(Sal_5-10 and Sal_20-30), salt chemical compositions, such as total alkalinity(TA), sodium adsorption ratio(SAR), soluble sodium percentage(SSP), sodium dianion ratio(SDR), and chlorine sulfur ratio (Cl^-/SO₄^2-), groundwater conditions, such as groundwater level(GWL), pH, and total dissolved solids(TDS), regional climate, such as temperature(T), and terrain conditions, as topography height(H)were considered comprehensively. Path analysis method was used to evaluate the intensity of each influencing factor. Results showed that the absolute values of the factors'direct path coefficient were in the range of 0.03 to 1.30, the descending order was Sal_5-10 >Sal_20-30 >SAR >TDS >SSP >GWL >pH >SDR >T >TA >Cl^-/SO₄^2- >H. From the indirect path coefficients, the indirect path coefficients of heart soil Sal_20-30 accumulate salts to the surface soil by the subsoil Sal_5-10 was 1.25, while the indirect path coefficients of subsoil through the heart soil was -0.93. The chemical compositions of soil salinity such as SAR, SSP, SDR, and Cl^-/SO₄^2-, which became larger after cumulative effect of salt on the surface by the sub-soil salinity effect, were followed by the former factors. Taking all the factors affecting the interaction and from the sum of the path coefficients, the strength order of the cumulative impact on surface soil salinity was Sal_5-10 >Sal_20-30 >TDS >SAR >SSP >TA >pH >Cl^-/SO₄^2- >SDR >T >GWL >H. Therefore, each factor influenced on the surface soil salt accumulation process through direct and indirect effects. Overall, the maximum impact factor was the sources of salt, and then the salt composition and groundwater conditions; regional climate and terrain conditions were the least impact factors. For the single factor, Sal_5-10 which reflected the sources of slat, SAR which reflected the soil chemical compositions, and TDS which reflected the groundwater conditions were the main controlling factors. These results will provide scientific references on the study of soil salinization process and the impact of its mechanism of the semi-arid North China Plain.

Key words: Semi-arid plain, salt accumulation, influence factors, path analysis

中图分类号:

S156.41

周在明, 赵淑惠. 华北半干旱平原区表层土壤盐分累积的影响因素分析[J]. 干旱区地理, 2015, 38(5): 976-984.

ZHOU Zai-ming, ZHAO Shu-hui. Influencing factors on surface soil salt accumulation in the semi-arid North China Plain[J]. , 2015, 38(5): 976-984.

参考文献

[1] KIM K H, YUN S T, CHOW B Y, et al. Hydrochemical and multivariate statistical interpretations of spatial controls of nitrate concentrations in a shallow alluvial aquifer around oxbow lakes(Osong area, central Korea)[J]. Journal of Contaminant Hydrology, 2009, 107:114-127.

[2] ELDEIRY A A, GARCIA L A. Comparison of ordinary Kriging, regression Kriging, and Cokriging techniques to estimate soil salinity using Landsat images[J]. Journal of Irrigation and Drainage Engineering, 2010, 136(6):355-364.

[3] 周在明, 张光辉, 王金哲, 等.环渤海低平原水土盐分与水位埋深的空间变异及协同克立格估值[J].地球学报, 2011, 32(4):493-499.[ZHOU Zaiming, ZHANG Guanghui, WANG Jinzhe, et al. Spatial variability of soil salinity, total dissolved solid and groundwater depth based on cokriging in the low plain around the Bohai Sea[J]. Acta Geoscientica Sinica, 2011, 32(4):493-499.]

[4] LLOYD C D, ATKINSON P M. Assessing uncertainty in estimates with ordinary and indicator kriging[J]. Computers and Geosciences, 2001, 27:929-937.

[5] LIN Y P, CHENG B Y, SHYU G S, et al. Combining a finite mixture distribution model with indicator kriging to delineate and map the spatial patterns of soil heavy metal pollution in Chunghua County, central Taiwan[J]. Environmental Pollution, 2010, 158:235-244.

[6] DEMIR Y, ERSAHIN S, GULER M, et al. Spatial variability of depth and salinity of groundwater under irrigatec ustifluvents in the Middle Black Sea Region of Turky[J]. Environmental Monitoring and Assessment, 2009, 158:279-294.

[7] HU K L, HUANG Y F, LI H, et al. Spatial variability of shallow groundwater level, electrical conducitivity and nitrate concentration, and risk assessment of nitrate contamination in North China Plain[J]. Environmental International, 2005, 31:896-903.

[8] 周在明, 张光辉, 王金哲, 等.环渤海低平原区土壤盐渍化风险的多元指示克立格评价[J].水利学报, 2011, 42(10):1144-1151.[ZHOU Zaiming, ZHANG Guanghui, WANG Jinzhe, et al. Risk assessment of soil salinity by multiple-variable indicator kriging in the low plain around the Bohai Sea[J]. Journal of Hydraulic Engineering, 2011, 42(10):1144-1151.]

[9] WANG Y G, XIAO D N, LI Y, et al. Soil salinity evolution and its relationship with dynamics of groundwater in the oasis of inland river basins:case study from the Fubei region of Xinjiang Province, China[J]. Environmental Monitoring and Assessment, 2008, 140:291-302.

[10] 周洪华, 陈亚宁, 李卫红.新疆铁干里克绿洲水文过程对土壤盐渍化的影响[J].地理学报, 2008, 63(7):714-724.[ZHOU Honghua, CHEN Yaning, LI Weihong. Effect of oasis hydrological processes on soil salinization of Tikanlik Oasis in the lower Tarim River[J]. Acta Geographica Sinica, 2008, 63(7):714-724.]

[11] 贾艳红, 赵传燕, 南忠仁.黑河下游地下水波动带土壤盐分空间变异特征分析[J].干旱区地理, 2008, 31(3):379-388.[JIA Yanhong, ZHAO Chuanyan, Nan Zhongren. Spatial feature of soil salinity in groundwater fluctuant region of the lower reaches of the Heihe River[J]. Arid Land Geography, 2008, 31(3):379-388.]

[12] 石元春, 贾大林.黄淮海平原农业图集[M].北京:北京农业大学出版社, 1998.[SHI Yuanchun, JIA Dalin. Agricultural map of Huang-Huai-Hai Plain[M]. Beijing:Beijing Agricultural University Prss, 1998.]

[13] 鲁如坤.土壤农业化学分析方法[M].北京:中国农业科学技术出版社, 1999.[LU Rukun. Analytical methods of soil agricultural chemistry[M]. Beijing:China Agricultural Science Press, 1999.]

[14] 梁春祥, 姚贤良.通径分析在土壤物理研究中的应用[J].土壤, 1989, 21(5):277-280.[LIANG Chunxiang, YAO Xianling. Path analysis in soil physical characteristic[J]. Soils, 1989, 21(5):277-280.]

[15] 刘光明, 杨劲松, 姚荣江.影响土壤浸提液电导率的盐分化学性质要素及其强度研究[J].土壤学报, 2005, 42(2):247-252.[LIU Guangming, YANG Peiling, REN Shumei, et al. Chemical factors to electrical conductivity of soil extract and their intensity[J]. Pedologica Sinica, 2005, 42(2):247-252.]

[16] 周在明, 张光辉, 王金哲, 等.环渤海微咸水区土壤盐分及盐渍化程度的空间格局[J].农业工程学报, 2010, 26(10):15-20.[ZHOU Zaiming, ZHANG Guanghui, WANG Jinzhe, et al. Spatial pattern of soil salinity and soil salinization in area around Bohai Sea[J]. Transactions of the CSAE, 2010, 26(10):15-20.]

[17] 周在明, 张光辉, 王金哲, 等.环渤海低平原微咸水区土壤盐渍化与盐分剖面特征[J].地理科学, 2011, 31(8):929-934.[ZHOU Zaiming, ZHANG Guanghui, WANG Jinzhe, et al. Salinity characteristics and profile types of saline soils in low plain around Bohai Sea[J]. Scientia Geographica Sinica, 2011, 31 (8):929-934.]

[18] 江红南, 塔西甫拉提·特依拜, 丁建丽, 等.新疆渭干河灌区土地盐渍化时空变化影响因子分子[J].干旱区地理, 2008, 31 (6):885-891.[JIANG Hongnan, TASHPOLAT Tiyip, DING Jianli, et al. Tempo-spatial change driving forces of land salinization in Weigan Irrigated Area, Xinjiang[J]. Arid Land Geography, 2008, 31(6):885-891.]

[19] 乔木, 周生斌, 卢磊, 等.近25a来塔里木盆地灌区土壤盐渍化时空变化特点与改良治理对策[J].干旱区地理, 2011, 34(4):604-613.[QIAO Mu, ZHOU Shengbin, LU Lei, et al. Temporal and spatial changes of soil salinization and improved countermeasures of Tarim Basin Irrigation District in recent 25 a[J]. Arid Land Geography, 2011, 34(4):604-613.]

[20] 姚荣江, 杨劲松, 姜龙.黄河下游三角洲盐渍区表层土壤积盐影响因子及其强度分析[J].土壤通报, 2008, 39(5):1115-1119.[YAO Rongjiang, YANG Jinsong, JIANG Long. Analysis on factors of salt accumulation and intensity in topsoil in the saline region of Lower Yellow River Delta[J]. Chinese Journal of Soil Science, 2008, 39(5):1115-1119.]

[21] 姜凌, 李佩成, 胡安焱, 等.干旱区绿洲土壤盐渍化分析评价[J].干旱区地理, 2009, 32(2):234-239.[JIANG Ling, LI Peicheng, HU Anyan, et al. Analysis and evaluation of soil salinization in oasis of arid region[J]. Arid Land Geography, 2009, 32 (2):234-239.]

[22] 张兆吉, 费宇红, 陈宗宇, 等.华北平原地下水可持续利用调查评价[M].北京:地质出版社, 2009.[ZHANG Zhaoji, FEI Yuhong, CHEN Zongyu, et al. Investigation and assessment of sustainable utilization of groundwater resources in the North China Plain[M]. Beijing:Geological Publishing House, 2009.]

[23] 李雪, 李国敏, 王志民, 等.塔里木沙漠公路沿线不同地下水位埋深下的土壤水盐分布特征[J].干旱区地理, 2013, 36(3):393-399.[LI Xue, LI Guomin, WANG Zhimin, et al. Soil water and salt with different water table depths along the Tarim Desert Highway[J]. Arid Land Geography, 2013, 36(3):393-399.]

[24] BENYAMINI Y, MIRLAS V, MARISH S. A surey of soil salinity and groundwater level control systems in irrigated fields in the Jezre' el Valley, Israel[J]. Agricultural Water Management, 2005, 76:181-194.

[25] ZHOU Z M, ZHANG G H, YAN M J, et al. Spatial variability of shallow groundwater level and its chemistry characteristics in the low plain around the Bohai Sea, North China[J]. Environmentmental Monitoring and Assessment, 2012, 184(6):3697-3710.

[26] 安月改, 李元华.河北省近50年蒸发量气候变化特征[J].干旱区资源与环境, 2005, 19(4):159-162.[AN Yuegai, LI Yuanhua. Change of evaporation in recent 50 years in Hebei region[J]. Journal of Arid Land Resources and Environment, 2005, 19(4):159-162.]

[27] 石元春, 李保国, 李韵珠, 等.区域水盐运动监测预报[M].石家庄:河北科学技术出版社, 1991.[SHI Yanchuan, LI Baoguo, LI Yunzhu. Prediction of regional water and salt monitoring[M]. Shijiazhuang:Hebei Science & Technology Press, 1991.]