XU Xiao-jia,LEI Guo-ping,ZHANG Hui,et al.Study on Surface Soil Fertility Quality Evaluation of the Southern Songnen Plain in Heilongjiang Province[J].Research of Soil and Water Conservation,2010,17(05):268-272.
黑龙江省松嫩平原南部表层土壤肥力质量评价研究
- Title:
- Study on Surface Soil Fertility Quality Evaluation of the Southern Songnen Plain in Heilongjiang Province
- Keywords:
- soil fertility; geochemistry; spatial variability; Songnen plain
- 分类号:
- S153.6
- 摘要:
- 对土壤肥力质量进行定量化评价是为了准确了解土壤肥力状况，进而通过合理施肥，保障土壤养分均衡，实现粮食高产稳产。以黑龙江省松嫩平原南部8.15万km2范围表层土壤为研究对象，按照1个点/km2的密度采集表层土壤样品20 929件，应用地理信息系统（GIS）的Kriging插值方法，对研究区内土壤元素全量进行空间变异特征分析，并在考虑pH值对各元素有效性的影响后，选取评价指标，利用层次分析法确定指标权重，选取隶属度函数模型，采用加法模型得到表层土壤肥力质量综合指数，制作1：200万表层土壤肥力分等图。结果表明，研究区表层土壤元素空间变异性主要受自然因素影响，土壤肥力质量划分为丰富、适量和缺乏三个等别，分别集中分布于研究区中部、东部和西部。
- Abstract:
- Quantitative evaluation of soil fertility quality is the accurate way to understand soil fertility status. And then through the rational fertilizat to protect the soil nutrient balance is to achieve high and stable yields of grain. 20 929 soil samples, each square kilometer with one sample point from 81.5 thousands square in the southern Songnen plain in Heilongjiang province are collected. The spatial variation characteristics of all elements were analyzed by the geographic information system Kriging method, considering the effect of pH on the validity of each element. We chose evaluating indexes and use AHP to determine their weights and select the membership function model; the soil fertility quality comprehensive indexes were calculated by the additive model. 1:200 000 0 fertility grading figures were produced. The results show that the spatial variability of the elements in surface soil of the research area mainly are affected by natural factors. Soil fertility quality is divided into rich, modest, and the lack 3 grades, mainly distributed in central, eastern and western of the research area.
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备注/Memo
收稿日期:2010-3-25;改回日期:2006-1-11。
基金项目:国土资源部地质大调查项目（1212010511217-04）
作者简介:徐晓嘉（1986- ），女，黑龙江人，硕士研究生，主要从事土地利用规划、土地质量评价研究。E-mail：xuxiaojia@live.cn
通讯作者:雷国平（1963- ），男，黑龙江人，博士生导师，主要从事土地利用变化、土地利用规划、国土资源遥感调查与评价。E-mail：Guopinglei@126.com