资源科学 ›› 2016, Vol. 38 ›› Issue (7): 1275-1286.doi: 10.18402/resci.2016.07.09
吴春生1,2(), 刘高焕1(
), 黄翀1,3, 刘庆生1, 管续栋1,2
收稿日期:
2015-12-16
修回日期:
2016-03-24
出版日期:
2016-07-25
发布日期:
2016-07-25
作者简介:
作者简介:吴春生,男,山东菏泽人,博士生,主要研究生态GIS和遥感应用。E-mail:
基金资助:
WU Chunsheng1,2(), LIU Gaohuan1, HUANG Chong1,3, LIU Qingsheng1(
), GUAN Xudong1,2
Received:
2015-12-16
Revised:
2016-03-24
Online:
2016-07-25
Published:
2016-07-25
摘要:
黄河三角洲土地资源丰富,但降水与蒸发严重失衡,土壤受盐渍化及污染影响严重。为获取该地区土壤质量现状,本研究选取了多个物理和化学指标,利用最小数据集理论,构建适合于研究区土壤质量评估的指标体系,然后采用模糊逻辑模型对土壤质量现状进行评估,并结合土地利用现状分析了主要土地利用类型在不同土壤等级上的分布情况。研究结果表明:经筛选后,黄河三角洲土壤质量评价最小数据集包括pH、TN、AP、AK、有机质和土壤盐分;评估结果显示在空间上土壤质量内陆高于沿海,以中部黄河与刁口河相交处为最优;土壤质量整体上以中等级为主,其中三级类型占比最大为31.22%,农田、园地、林地等主要分布在三级以上土壤,但有部分在低级土壤上存在,而且优质土壤上也存在较多的闲置土地,土地资源利用存在不合理性,有待进一步的优化配置。
吴春生, 刘高焕, 黄翀, 刘庆生, 管续栋. 基于MDS和模糊逻辑的黄河三角洲土壤质量评估[J]. 资源科学, 2016, 38(7): 1275-1286.
WU Chunsheng,LIU Gaohuan,HUANG Chong,LIU Qingsheng,GUAN Xudong. Soil quality assessment of the Yellow River Delta based on MDS and Fuzzy Logic Model[J]. Resources Science, 2016, 38(7): 1275-1286.
表 1
研究区土壤要素统计性特征"
最小值 | 最大值 | 平均值 | 标准差 | 变异系数 | 偏度 | 峰度 | K-S检验 | |
---|---|---|---|---|---|---|---|---|
有机质/% | 0.08 | 3.01 | 1.00 | 0.54 | 54.17 | 1.17 | 1.74 | 0.16 |
TN/% | 0.01 | 0.18 | 0.06 | 0.03 | 49.78 | 0.95 | 1.33 | 0.45 |
AK/(mg/kg) | 47.98 | 394.70 | 131.80 | 70.94 | 53.83 | 1.69 | 3.02 | 0.01 |
AP/(mg/kg) | 1.89 | 36.95 | 10.45 | 6.89 | 65.90 | 1.45 | 2.34 | 0.06 |
黏粒/% | 0.00 | 15.50 | 6.30 | 3.43 | 54.43 | 0.10 | -0.19 | 0.86 |
粉粒/% | 9.26 | 88.47 | 36.83 | 16.87 | 45.81 | 0.64 | 0.02 | 0.53 |
砂粒/% | 8.90 | 89.81 | 56.88 | 19.31 | 33.94 | -0.53 | -0.34 | 0.76 |
盐分/% | 0.01 | 3.00 | 0.54 | 0.66 | 122.86 | 1.97 | 3.42 | 0.00 |
湿度/% | 13.40 | 181.10 | 42.71 | 23.96 | 56.11 | 2.55 | 10.12 | 0.00 |
pH | 7.65 | 8.82 | 8.16 | 0.24 | 2.99 | 0.26 | -0.39 | 0.26 |
表 2
研究区土壤要素相关性检验"
有机质 | TN | AK | AP | 黏粒 | 粉粒 | 砂粒 | 盐分 | 湿度 | pH | |
---|---|---|---|---|---|---|---|---|---|---|
有机质 | 1.00 | |||||||||
TN | 0.46** | 1.00 | ||||||||
AK | 0.40** | 0.39** | 1.00 | |||||||
AP | 0.16 | 0.42** | 0.22* | 1.00 | ||||||
黏粒 | -0.07 | 0.32** | 0.35** | 0.20* | 1.00 | |||||
粉粒 | 0.31** | 0.60** | 0.57** | 0.14 | 0.66** | 1.00 | ||||
砂粒 | -0.25** | -0.58** | -0.56** | -0.16 | -0.76** | -0.99** | 1.00 | |||
盐分 | 0.04 | -0.02 | 0.24* | -0.12 | -0.01 | -0.06 | 0.06 | 1.00 | ||
湿度 | -0.14 | -0.20* | 0.16 | -0.21* | -0.06 | -0.02 | 0.02 | 0.35** | 1.00 | |
pH | -0.09 | -0.01 | -0.15 | 0.03 | 0.18 | 0.23* | -0.23* | -0.10 | -0.22* | 1.00 |
注:**、*分别为在1%和5%水平下显著相关。 |
表 4
MDS土壤指标筛选结果"
分组 | 土壤要素 | Norm | 决定系数 | 正态变换 | 分值 | 是否入选 | |||
---|---|---|---|---|---|---|---|---|---|
土地利用 | 土壤类型 | Norm | 土地利用 | 土壤类型 | |||||
1 | TN | 1.50 | 0.03 | 0.10 | 0.82 | 1.00 | 0.13 | 1.95 | 是 |
1 | AK | 1.44 | 0.19 | 0.02 | 0.79 | 0.21 | 0.97 | 1.97 | 是 |
1 | 黏粒 | 1.47 | 0.11 | 0.02 | 0.81 | 0.23 | 0.56 | 1.60 | 否 |
1 | 粉粒 | 1.80 | 0.00 | 0.03 | 0.98 | 0.25 | 0.02 | 1.25 | 否 |
1 | 砂粒 | 1.82 | 0.02 | 0.02 | 1.00 | 0.17 | 0.10 | 1.27 | 否 |
2 | 盐分 | 0.92 | 0.19 | 0.06 | 0.50 | 0.57 | 1.00 | 2.07 | 是 |
2 | 湿度 | 1.05 | 0.13 | 0.00 | 0.58 | 0.01 | 0.66 | 1.25 | 否 |
3 | pH | 0.91 | 0.06 | 0.05 | 0.50 | 0.47 | 0.31 | 1.29 | 是 |
4 | 有机质 | 1.15 | 0.11 | 0.01 | 0.63 | 0.06 | 0.57 | 1.26 | 是 |
5 | AP | 0.98 | 0.14 | 0.09 | 0.54 | 0.88 | 0.75 | 2.16 | 是 |
表9
各土地利用类型在不同土壤级别上的面积分布状况"
土壤级别 土地类型 | 一级 | 二级 | 三级 | 四级 | 五级 | 六级 | 总计 |
---|---|---|---|---|---|---|---|
农田 | 70.43 | 401.08 | 453.69 | 145.74 | 35.97 | 7.07 | 1 113.98 |
草地 | 19.09 | 21.38 | 53.99 | 42.76 | 19.45 | 10.89 | 167.56 |
林地 | 10.31 | 40.40 | 48.58 | 20.55 | 14.84 | 55.98 | 190.65 |
园地 | 1.48 | 10.80 | 8.03 | 0.99 | 0.01 | - | 21.31 |
盐碱地 | 12.99 | 124.07 | 305.27 | 248.92 | 165.59 | 52.57 | 909.41 |
内陆滩涂 | 0.23 | 5.89 | 10.08 | 5.20 | 2.49 | 8.93 | 32.83 |
沿海滩涂 | - | 3.76 | 50.60 | 45.58 | 55.82 | 367.93 | 523.69 |
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