| 荒漠化逆转地区耕层土壤有机碳时空动态研究 |
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| 引用本文： | 程淑兰,欧阳华,牛海山,王琳,高俊琴,张锋,田玉强.荒漠化逆转地区耕层土壤有机碳时空动态研究[J].兰州大学学报(自然科学版),2004,40(6):96-100. |
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| 作者姓名： | 程淑兰 欧阳华 牛海山 王琳 高俊琴 张锋 田玉强 |
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| 作者单位： | 1. 中国科学院,研究生院,北京,100039
2. 中国科学院,地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国际科技合作重点项目计划资助项目(2001DFDF0004). |
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| 摘 要： | 以陕西省榆林市为例研究荒漠化逆转地区耕层土壤有机碳时空动态特征．研究表明近20年来耕层土壤有机碳质量分数、密度和储量分别增加了0．510g／kg，0.161kg／m^2，10．78Gg．这表明自然植被恢复、人工种草、退耕还草等土地利用／覆被变化措施能显著提高荒漠化地区土壤固碳能力．
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| 关 键 词： | 土壤有机碳 土地利用／覆被 荒漠化逆转 榆林 |
| 文章编号： | 0455-2059(2004)06-0096-05 |
The temporal-spatial dynamics of soil organic carbon of arable layer in reversed desertification area |
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| CHENG Shu-lan,OU Yang-hua,NIU Hai-shan,WANG Lin,GAO Jun-qin,ZHANG Feng,TIAN Yu-qiang.The temporal-spatial dynamics of soil organic carbon of arable layer in reversed desertification area[J].Journal of Lanzhou University(Natural Science),2004,40(6):96-100. |
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| Authors: | CHENG Shu-lan OU Yang-hua NIU Hai-shan WANG Lin GAO Jun-qin ZHANG Feng TIAN Yu-qiang |
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| Abstract: | Soil organic carbon (SOC) was alleged to be an important index for evaluating the degree of land degradation and the potentiality of soil organic carbon sequestration in Yulin County was taken as a case study for conducting the temporal-spatial dynamics of soil organic carbon in arable-soil layer. The results showed that during a period of 20 years, soil organic carbon content, density and storage in the arable layer increased 0.510 g/kg, 0.161 kg/m2, 10.78 Gg respectively, demonstrating that land use/cover change and land management alternation such as natural vegetation recovery, grass planting, turning arable land to grassland, soil and water conservation, etc, have accelerated the desertification reversing process and soil organic carbon sequestration. |
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| Keywords: | soil organic carbon land use and land cover reversed desertification area Yulin County |
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