资源科学 ›› 2016, Vol. 38 ›› Issue (5): 994-1002.doi: 10.18402/resci.2016.05.18
• • 上一篇
吴春生1,2(), 刘高焕1(
), 刘庆生1, 黄翀1,3, 张韵婕1,2, 管续栋1,2
收稿日期:
2015-11-10
修回日期:
2016-04-05
出版日期:
2016-05-25
发布日期:
2016-05-23
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(
), LIU Qingsheng1, HUANG Chong1,3, ZHANG Yunjie1,2, GUAN Xudong1,2
Received:
2015-11-10
Revised:
2016-04-05
Online:
2016-05-25
Published:
2016-05-23
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。
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.
表 1
研究区采样点土壤要素统计特征"
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 |
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