| 刘书田,窦森,郑伟,曹忠林,侯彦林,郑宏艳,黄治平.基于配方施肥数据集的有机碳含量与温度和降水量相关性研究[J].农业环境科学学报,2016,35(7):1413-1420. |
| 基于配方施肥数据集的有机碳含量与温度和降水量相关性研究 |
| Correlation of organic carbon content and annual average precipitation and annual average temperatures based on soil testing and fertilizer recommendation data set |
| 投稿时间：2016-03-29 |
| DOI：10.11654/jaes.2016.07.026 |
| 中文关键词: 测土配方施肥 土壤有机碳 年平均降水量 年平均温度 |
| 英文关键词: data set of soil testing and fertilizer recommendation soil organic carbon annual average precipitation annual average temperature |
| 基金项目:吉林省重点科技攻关项目（2011CB100503NY）；国家自然科学基金项目（41571231）；中国农业科学院创新工程（2016-cxgc-hyl） |
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| 中文摘要: |
| 采用全国测土配方施肥项目土壤基础养分数据集，研究了在全球气候变暖的大背景下年平均温度和年平均降水量对土壤有机碳含量的影响。按照年平均温度约5、5～10、10～15、15～20、跃20℃以及年平均降水量0～200、200～400、400～600、600～800、800～1000、1000～1200、1200～1400、1400～1600 mm和跃1600 mm等区间，分别研究了每个降水区间内自第二次土壤普查后近30年来年平均温度和年平均降水量对土壤有机碳影响的密切程度，结果表明：年平均温度低于10℃时，土壤有机碳含量与年平均温度的相关性比其与年平均降水量的相关性好，高于20℃时，土壤有机碳含量与年平均降水量和年平均温度的相关性都很差，但是偏相关结果表明，在10～20℃时，土壤有机碳含量虽然与年平均温度和年平均降水量都有显著的正相关，但其随着年平均温度升高而升高的事实是被随着年平均降水量增加而增加的事实所掩盖的；在年平均降水量0～200 mm的区间内，土壤有机碳与年平均降水量有显著的相关性，而与年平均温度的相关性很差，年平均降水量对土壤有机碳影响的密切程度较大，在200～400、400～600、600～800 mm的年平均降水量区间内，土壤有机碳与年平均温度的相关性要好于其与年平均降水量的相关性，年平均温度对土壤有机碳影响的密切程度较大，尤其在400～800 mm年降水量区间内的半湿润地区，土壤有机碳与年平均温度呈现极显著的相关关系，在年平均降水量大于800 mm后，年平均温度和平均降水量对土壤有机碳累积的影响并不明显。 |
| 英文摘要: |
| In this paper, based on the soil nutrient data set of the national soil testing and formula fertilization project, the effects of annual mean temperature and annual mean precipitation on soil organic carbon content were studied in the background of global warming. Accord ing to the annual average temperature of <5℃, 5~10℃, 10~15℃, 15~20℃, >20℃ and annual average precipitation 0~200 mm, 200~400 mm, 400~600 mm, 600~800 mm, 800~1000 mm, 1000~1200 mm, 1200~1400 mm, 1400~1600 mm and >1600 mm, the effects of the aver age temperature and the annual mean precipitation on soil organic carbon in the second soil survey in each precipitation range during the past 30 years were studied. The results show that:the annual average temperature was less than 10℃, greater than 20℃, the correlation be tween soil organic carbon content and annual average precipitation and annual average temperature was very poor. But partial correlation results show that in 10~20℃, soil organic carbon content although with annual mean temperature and annual mean precipitation have significant positive correlation, but increased with the increase of mean annual temperature, that was with the increase in average annual precipitation and increase the fact that covered it. In the range of annual average precipitation 0~200 mm, soil organic carbon had a significant cor relation with annual average precipitation, but the average annual precipitation was very poor, the annual average precipitation plays a major role in driving, in the range of 200~400 mm, 400~600 mm and 600~800 mm, the correlation between soil organic carbon and annual aver age temperature was better than that of annual average precipitation, the annual average temperature plays a major role in driving, especially in the semi humid area of 400~800 mm, the annual average temperature of soil organic carbon was extremely significant, after the annual average precipitation is more than 800 mm, the cumulative effect of annual mean temperature and mean precipitation on soil organic carbon was not significant. |
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