蒙古高原中北部土壤有机质空间分布研究

doi:10.18402/resci.2016.05.18

摘要/Abstract

摘要：

土壤有机质是土壤质量或肥力的重要表征要素,其在区域内的空间分布状况与当地的生态环境状况具有一定的相关性。蒙古高原处于干旱半干旱气候区,常年遭受风蚀等灾害影响,再加上人为活动的破坏,土壤养分流失严重,生态状况堪忧。本研究即是以蒙古高原中北部为研究区,对该地区土壤有机质做空间化扩展研究,通过选取与有机质相关的环境要素,包括高程、年均气温、年均降雨量以及归一化植被指数,建立地理加权回归插值模型,获取了土壤有机质的空间分布状况。结果显示,研究区土壤有机质含量分布具有明显的地区差异,北部山地区域有机质含量普遍较高,最高约为43.35%,而在南部戈壁和荒漠区有机质含量相当低,接近于0,气候和地形是影响其空间分布差异的主要因素。

关键词: 蒙古高原, 土壤有机质, 地理加权回归, 空间插值

Abstract:

Soil organic matter（SOM）is an important representation of soil quality or soil fertility,and its spatial distribution characteristic correlates with the ecological environment regionally. The Mongolia Plateau is in an arid and semi-arid climate zone and disturbed by wind erosion and other natural disasters perennially coupled with destruction of human activities,soil nutrient loss is serious and the local ecologic system is vulnerable. This study took the middle and northern area of the Mongolian Plateau as a study area. Elevation,mean annual temperatures,mean annual precipitation and NDVI were selected as environmental indicators,and correlated with SOM content of sample points to construct a geographically weighted regression model to gain the spatial distribution of SOM. Land cover types were also used in combination with interpolation results to analyze the spatial distribution characteristics of SOM and influence on SOM content. We found that the content of SOM in the study area had regional differences,content in the northern mountainous areas was generally higher than 40%,while in the southern desert area the content was close to zero. Landform and climate were the main factors affecting spatial distribution differences. In the north,there were more mountains covered by forest,bush and grass with plenty of moisture from the Arctic Ocean,beneficial for the accumulation of SOM. In the south it was always desertification area and the soil was barren with rare vegetation,bad for the accumulation of SOM.

Key words: Mongolian Plateau, soil organic matter, geographically weighted regression, spatial interpolation

吴春生, 刘高焕, 刘庆生, 黄翀, 张韵婕, 管续栋. 蒙古高原中北部土壤有机质空间分布研究[J]. 资源科学, 2016, 38(5): 994-1002.

WU Chunsheng,LIU Gaohuan,LIU Qingsheng,HUANG Chong,ZHANG Yunjie,GUAN Xudong. The spatial distribution of soil organic matter on north-central Mongolian Plateau[J]. Resources Science, 2016, 38(5): 994-1002.

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参考文献 29

[1]	黄魏,韩宗伟,罗云,等. 基于地形单元的土壤有机质空间变异研究[J]. 农业机械学报,2015,(4):161-167.
	[Huang W,Han Z W,Luo Y,et al.Spatial distribution of soil organic matter based on topographic unit[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,(4):161-167.]
[2]	赵明松,张甘霖,王德彩,等. 徐淮黄泛平原土壤有机质空间变异特征及主控因素分析[J]. 土壤学报,2013,50(1):1-11.
	[Zhao M S,Zhang G L,Wang D C,et al.Spatial variability of soil organic matter and its dominating factors in Xu-Huai Alluvial Plain[J]. Acta Pedologica Sinica,2013,50(1):1-11.]
[3]	王合玲,张辉国,秦璐,等. 新疆艾比湖流域土壤有机质的空间分布特征及其影响因素[J]. 生态学报,2012,32(16):4969-4980.
	[Wang H L,Zhang H G,Qin L,et al.The characteristics of the spatial distribution of soil organic matter and factors influencing it in Ebinur Lake Basin of Xinjiang Autonomous Region,China[J]. Acta Ecologica Sinica,2012,32(16):4969-4980.]
[4]	刘纪远,齐永青,师华定,等. 蒙古高原塔里亚特-锡林郭勒样带土壤风蚀速率的~(137)Cs示踪分析[J]. 科学通报,2007,52(23):2785-2791.
	[Liu J Y,Qi Y Q,Shi H D,et al.~(137)Cs tracer analysis of the soil wind erosion rate in the sample of Tariat-Xilinguole Mongolian[J]. Chinese Science Bulletin,2007,52(23):2785-2791.]
[5]	齐永青,刘纪远,师华定,等. 蒙古高原北部典型草原区土壤风蚀的~(137)Cs示踪法研究[J]. 科学通报,2008,53(9):1070-1076.
	[Qi Y Q,Liu J Y,Shi H D,et al.~(137)Cs tracer analysis in Mongolian Plateau typical northern savanes[J]. Chinese Science Bulletin,2008,53(9):1070-1076.]
[6]	师华定,高庆先,齐永清,等. 蒙古高原土壤风蚀危险度的FCM模糊聚类研究[J]. 自然资源学报,2009,(5):881-889.
	[Shi H D,Gao Q X,Qi Y Q,et al.Wind erosion hazard assessment of Mongolian Plateau by using FMC fuzzy cluster method[J]. Journal Of Natural Resources,2009,(5):881-889.]
[7]	包刚,包玉海,覃志豪,等. 近10年蒙古高原植被覆盖变化及其对气候的季节响应[J]. 地理科学,2013,33(5):613-621.
	[Bao G,Bao Y H,Qin Z H,et al.Vegetation cover changes in Mon-golian Plateau and its response to seasonal climate changes in recent 10 years[J]. Scientia Geographica Sinica,2013,33(5):613-621.]
[8]	张雪艳,胡云锋,庄大方,等. 蒙古高原NDVI的空间格局及空间分异[J]. 地理研究,2009,28(1):10-18.
	[Zhang X Y,Hu X F,Zhuang D F,et al.The spatial pattern and differentiation of NDVI in Mongolia Plateau[J]. Scientia Geographica Sinica,2009,28(1):10-18.]
[9]	缪丽娟,蒋冲,何斌,等. 近10年来蒙古高原植被覆盖变化对气候的响应[J]. 生态学报,2014,34(5):1295-1301.
	[Miao L J,Jiang C,He B,et al.Response of vegetation coverage to climate change in Mongolian Plateau during recent 10 years[J]. Acta Ecologica Sinica,2014,34(5):1295-1301.]
[10]	Ma Y Z,Liu K B,Meng H W,et al.Vegetation changes and associated climate variations during the past 38,000 years reconstructed from the Shaamar eolian-paleosol section,northern Mongolia[J]. Quaternary International,2013,311(2013):25-35.
[11]	胡云锋,徐芝英. 蒙古高原地形与植被指数的特征尺度及多尺度耦合关系[J]. 地理科学,2014,34(12):1511-1517.
	[Hu Y F,Xu Z Y.Characteristic scales and the multi-scale correlation between DEM and NDVI factors:A case study in the Mongolian Plateau[J]. Scientia Geographica Sinica,2014,34(12):1511-1517.]
[12]	周锡饮,师华定,王秀茹. 气候变化和人类活动对蒙古高原植被覆盖变化的影响[J]. 干旱区研究,2014,31(4):604-610.
	[Zhou Q Y,Shi H D,Wang X R.Impact of climate change and human activities on vegetation coverage in the Mongolian Plateau[J]. Arid Zone Research,2014,31(4):604-610.]
[13]	周锡饮,师华定,王秀茹,等. 蒙古高原近30年来土地利用变化时空特征与动因分析[J]. 浙江农业学报,2012,24(6):1102-1110.
	[Zhou Q Y,Shi H D,Wang X R,et al.Study on the temporal and spatial dynamic changes of land use and driving forces analysis of Mongolia Plateau in recent 30 years[J]. Acta Agriculturae Zhejiangensis,2012,24(6):1102-1110.]
[14]	Bao G,Bao Y H,Qin Z H,et al.Modeling net primary productivity of terrestrial ecosystems in the semi-arid climate of the Mongolian Plateau using LSWI-based CASA ecosystem model[J]. International Journal of Applied Earth Observation and Geoinfor-mation,2016,46(2016):84-93.
[15]	Liu Y L, Zhang Q L, Chen M, et al. Response of evapotrans-piration and water availability to changing climate and land cover on the Mongolian Plateau during the 21st century[J]. Global and Planetary Change,2013,108(2013):85-99.
[16]	Kato H, Y Onda, Y Tanaka. Using 137Cs and 210Pbex measure-ments to estimate soil redistribution rates on semi-arid grassland in Mongolia[J]. Geomorphology,2010,114(2010):508-519.
[17]	武月荣,苏根成. 灰色关联度法在蒙古高原北部草原土壤质量评价中的应用[J]. 内蒙古师范大学学报(自然科学汉文版),2008,37(6):775-779.
	[Wu Y R,Su G C.Application of grey system theory to evaluating grassland soil qualities in North Mon-golian Plateau[J]. Journal of Inner Mongolia Normal University (Natura l Science Edition),2008,37(6):775-779.]
[18]	Emadi M,Baghernejad M.Comparison of spatial interpolation techniques for mapping soil pH and salinity in agricultural coastal areas,northern Iran[J]. Archives of Agronomy and Soil Science,2014,60(9):1315-1327.
[19]	Fan X M,Liu G H,Liu H G.Evaluating the spatial distribution of soil salinity in the Yellow River delta based on kriging and cokriging methods[J]. Resources Science,2014,36(2):321-327.
[20]	Goovaerts P.Ordinary cokriging revisited[J]. Mathematical Geo-logy,1998,30(1):21-42.
[21]	Wang K,Zhang C R,Li W D.Predictive mapping of soil total nitrogen at a regional scale:A comparison between geographically weighted regression and cokriging[J]. Applied Geography,2013,42(8):73-85.
[22]	覃文忠. 地理加权回归基本理论与应用研究[D].上海:同济大学,2007.
	[Qin W Z.The Basic Theoretics and Application Re-search on Geographically Weighted Regression[D]. Shanghai:Tongji University,2007.]
[23]	Sandeep K,Lal R,Liu D S. A geographically weighted regression kriging approach for mapping soil organic carbon stock[J]. Geoderma,2012,189-190(6):627-634.
[24]	Su S L,Xiao R,Zhang Y.Multi-scale analysis of spatially varying relationships between agricultural landscape patterns and urbanization using geographically weighted regression[J]. Applied Geography,2012,32(2):360-375.
[25]	Wang K,Jiang Z L.Accuracy analysis of kriging with local regression residuals on soil cation exchange capacity[J]. Acta Agriculturae Universitatis Jiangxiensis,2013,35(1):195-203.
[26]	Wang K,Zhang C R,Li W D,et al.Mapping soil organic matter with limited sample data using geographically weighted regression[J]. Journal of Spatial Science,2014,59(1):91-106.
[27]	杨顺华,张海涛,郭龙,等. 基于回归和地理加权回归Kriging的土壤有机质空间插值[J]. 应用生态学报,2015,26(6):1649-1656.
	[Yang S H,Zhang H T,Guo L,et al.Spatial interpolation of soil organic matter using regression kriging and geographically weighted regression kriging[J]. Chinese Journal of Applied Ecology,2015,26(6):1649-1656.]
[28]	李志斌. 基于地统计学方法和Scorpan模型的土壤有机质空间模拟研究[D]. 北京:中国农业科学院,2010.
	[Li Z B.Soil Organic Matter Prediction Based on Geostatistics and Scorpan Model-a Case Study in Shulan of Jilin Provice[D]. Beijing:Chinese Academy of Agricultural Sciences Dissertation,2010.]
[29]	吕圣桥,高鹏,耿广坡,等. 黄河三角洲滩地土壤颗粒分形特征及其与土壤有机质的关系[J]. 水土保持学报,2011,25(6):134-138.
	[Lv S Q,Gao P,Geng G P,et al.Characteristics of soil particles and their correlation with soil organic matter in lowlands of the Yellow River Delta[J]. Journal of Soil and Water Con-servation,2011,25(6):134-138.]

	最小值	最大值	平均值	标准差	变异系数	偏度	峰度
有机质/%	0.10	17.60	2.86	3.03	105.62	1.97	5.23
pH	5.80	9.04	7.38	0.70	9.53	0.32	-0.38
TN/（mg/kg）	0.04	6.85	1.11	1.18	105.69	1.97	5.23
AP/（mg/100g）	0.09	7.39	1.66	1.27	76.20	1.66	3.40
AK/（mg/100g）	3.19	73.00	16.89	11.13	65.93	2.30	7.54
含盐量/%	0.01	1.03	0.08	0.11	137.74	7.31	62.59
砂粒/%	9.10	80.00	45.83	15.92	34.73	-0.32	-0.89
粉粒/%	9.90	72.50	41.03	13.90	33.89	0.48	-0.64
黏粒/%	4.00	50.90	13.22	7.68	58.08	2.03	5.55

	有机质	高程	NDVI	年均降雨量	年均气温
有机质	1.00
高程	0.28**	1.00
NDVI	0.63**	0.02	1.00
年均降雨量	0.44**	0.01	0.73**	1.00
年均气温	-0.58**	-0.058**	-0.57**	-0.55**	1.00