| 干旱区不同土地利用方式下土壤呼吸日变化差异及影响因素 |
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| 引用本文： | 周洪华,李卫红,杨余辉,曹志超,李稚.干旱区不同土地利用方式下土壤呼吸日变化差异及影响因素[J].地理科学,2011(2):190-196. |
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| 作者姓名： | 周洪华 李卫红 杨余辉 曹志超 李稚 |
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| 作者单位： | 中国科学院新疆生态与地理研究所中国科学院绿洲生态与荒漠环境重点实验室; |
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| 基金项目： | 国家自然科学基金(40901061,40871059,40901105); 西部之光项目(XBBS200810)资助 |
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| 摘 要： | 利用开路式土壤碳通量测量系统-LI-8100对塔里木河下游6种土地利用方式下土壤呼吸速率的日变化进行了野外定位测量,并就水热因子及土壤理化性质对土壤日呼吸速率差异的影响进行了分析.结果表明,梨园、弃耕地、棉田、人工林、草地和天然林土壤呼吸速率日变化均呈单峰曲线,土壤日呼吸速率差异显著.大气温度和土地利用方式是造成土壤日...
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| 关 键 词： | 干旱区 土地利用方式 土壤呼吸 空间差异 塔里木河下游 |
Soil Respiration Variant and Its Effecting Factors at Different Land Use in Arid Land |
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| ZHOU Hong-hua,LI Wei-hong,YANG Yu-hui,CAO Zhi-chao,LI Zhi.Soil Respiration Variant and Its Effecting Factors at Different Land Use in Arid Land[J].Scientia Geographica Sinica,2011(2):190-196. |
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| Authors: | ZHOU Hong-hua LI Wei-hong YANG Yu-hui CAO Zhi-chao LI Zhi |
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| Institution: | ZHOU Hong-hua,LI Wei-hong,YANG Yu-hui,CAO Zhi-chao,LI Zhi(Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,Xinjiang 830011,China) |
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| Abstract: | Soil respiration rates at 6 different land-use(i.e.,cropland,orchard,abandoned farmlands,plantation,natural forest and grassland) in the lower reaches of the Tarim River were measured with an automated CO2 efflux system(LI-COR 8100),and the temperature,soil moisture,pH,salt content,organic content,total nitrogen content,available nitrogen content and soil texture were measured at the same time.The results showed that the diurnal variation of soil respiration rate of cropland,orchard,abandoned farmlands,plan... |
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| Keywords: | arid land land-use soil respiration spatial difference lower reaches of Tarim River |
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