کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8893995 | 1629392 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spatial distribution of soil organic carbon in the ecologically fragile Horqin Grassland of northeastern China
ترجمه فارسی عنوان
توزیع فضایی کربن آلاینده خاک در گیاهان زینتی هورکوئین شکننده در شمال شرقی
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کلمات کلیدی
چمنزار شنی، بیابان زایی، ذخایر کربن، الگوی فضایی، زمین هورقین سندی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
The spatial distribution of soil organic carbon (SOC) and its storage in the topmost 100â¯cm of the soil were investigated in the Horqin Grassland of northeastern China. Soil samples were collected at 1465 sites, covering 12.03â¯Ãâ¯104â¯km2. The region had a mean SOC density of 6.84â¯kgâ¯Câ¯mâ3, which is lower than China's mean (9.60â¯kgâ¯Câ¯mâ3) and the world's mean (10.40â¯kgâ¯Câ¯mâ3). The mean SOC density was much higher in the northern part of the study area (8.85â¯kgâ¯Câ¯mâ3) than in the southern part (4.84â¯kgâ¯Câ¯mâ3). The total SOC storage in the Horqin Grassland was 862.74â¯Tg. SOC storage decreased with increasing soil sampling depth. The SOC stored in the top 10, 20, 40, and 60â¯cm accounted for 17.7, 31.7, 53.8, and 71.3%, respectively, of the total amount in the top 100â¯cm. The region's extensive desertification appears to be one of the most important factors that led to the relatively low SOC content and the difference between the northern and southern parts of the Horqin Grassland. Our results provide an important baseline for evaluating past losses of SOC due to desertification, and for projecting the potential increase in SOC from the restoration of desertified land and how SOC will respond to climate change.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoderma - Volume 325, 1 September 2018, Pages 102-109
Journal: Geoderma - Volume 325, 1 September 2018, Pages 102-109
نویسندگان
Yuqiang Li, Xuyang Wang, Yayi Niu, Jie Lian, Yongqing Luo, Yinping Chen, Xiangwen Gong, Huan Yang, Peidong Yu,