MA Huawei,SHI Xueyi,ZHANG Meirong,et al.Research on Spatial Characteristics of Soil Nutrients in Reclaimed Village—Taking Xigao Village in Shanxi Province as an Example[J].Research of Soil and Water Conservation,2015,22(04):107-112.
待复垦村庄土壤养分特征研究——以山西省西郜村为例
- Title:
- Research on Spatial Characteristics of Soil Nutrients in Reclaimed Village—Taking Xigao Village in Shanxi Province as an Example
- Keywords:
- soli nutrients; geostatistics; GIS; spatial distribution; reclaimed village
- 分类号:
- S153.6
- 摘要:
- 掌握复垦村庄土壤养分状况，有助于探究长期作为村庄的土壤养分特点，为土地复垦过程中改善土壤质量与土壤培肥提供依据。以山西省晋城市泽州县西郜村煤炭基地复垦村庄为研究区，运用地统计学与GIS相结合的方法，研究土壤中有机质、全氮、速效钾和有效磷养分含量及空间分布特征，并在地理信息系统支持下绘制土壤养分的空间分布图。研究结果表明：土壤这4种养分的变异系数范围为19.78%~29.45%，变异程度较小，有机质、速效钾的半方差拟合模型为球状模型，全氮、有效磷的半方差拟合模型为高斯模型；有机质、全氮、速效钾和有效磷的变程分别为59.70，54.47，55.89，66.87 m，块金系数分别为74.2%，74.9%，69.1%，76.5%，具有中等程度的空间相关性；研究区内4种养分分布略有差异，但整体上均在村庄中部含量较高，逐次向周围递减，土壤养分空间分布格局是在地形变化、人类活动以及其他随机因素共同作用下而形成的。掌握村庄土壤养分的空间分布规律，能够为煤炭基地村庄复垦后耕地质量提升、农田土壤养分精准管理和施肥决策提供一定的依据。
- Abstract:
- Understanding the soil nutrient condition in reclaimed village will make a difference on improving soil quality and soil fertility in the course of land reclamation. A reclaimed village in Zezhou County of Shanxi Province was selected as the study area, the spatial variability of soil nutrients in reclaimed village was comprehensively analyzed by a combination of geostatistics with a geographic information system (GIS). The results were shown as follows. (1) The variation coefficient of 4 soil nutrients ranged from 19.78% to 29.45%, which indicated the variation degree of soil nutrients was relatively small. The semi-variance models of 4 soli nutrients were in line with the Gaussian model. (2) The ranges of organic matter (OM), total nitrogen (TN), available K (AK) and available P (AP) were 59.70, 54.47, 55.59 and 66.87 m, respectively, and the nugget factors were 74.2%, 74.9%, 69.1% and 76.5%, respectively, which suggested that the soil nutrients had medium spatial correlation. (3) The maximum values of OM, TN and AP were concentrated in two parts namely northeast and southwest near central regions, and the distribution of AP was descending from the central to the peripheral areas. (4) The spatial distribution pattern of soil nutrients was formed under the influence of the terrain change, human activity and some random factors. Mastering the distribution of village soli nutrients will provide the basis for enhancing quality of arable land after reclamation, precise management of soil nutrients and fertilization decision in villages of coal base.
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备注/Memo
收稿日期:2014-09-07;改回日期:2014-10-12。
基金项目:国土资源部公益性行业科研专项经费课题“北方地区村庄土地复垦整理技术研究与示范”（201111015-04）
作者简介:马桦薇(1990-),女,河南省平顶山人,硕士研究生,主要研究方向为土地资源评价与利用规划。E-mail:mahuawei90@126.com
通讯作者:师学义(1960-),男,山西省祁县人,博士,教授,主要从事土地利用规划与土地利用工程研究。E-mail:shixueyi60@163.com