חיפוש מתקדם
Land Degradation and Development
Shang, Z., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Cao, J., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Guo, R., Institute of Arid Agroecology, School of Life Sciences Lanzhou University Lanzhou 730020 Gansu Province PR China
Henkin, Z., Beef Cattle section, Newe-Ya'ar Research Center, Department of Agronomy and Natural Resources Agricultural Research Organization PO Box 1021 Ramat Yishay 30095 Israel
Ding, L., Institute of Arid Agroecology, School of Life Sciences Lanzhou University Lanzhou 730020 Gansu Province PR China
Long, R., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Deng, B., The Institute of Grassland Science, College Animal Science and Technology China Agricultural University Beijing 100094 PR China
Enclosures have been set-up in rangelands in China since about 1980 to control grazing. This was performed in order to favour the recovery of degraded vegetation and soil. Alpine desert rangeland is an important ecosystem in China, and enclosure was considered a means of rangeland restoration for long-term grazing. Soil properties were studied in a 6-year enclosure experiment, which found that without grazing, vegetation cover and aboveground plant biomass increased significantly. A positive, but not significant, trend in soil bulk density was also found. However, the storage of soil carbon (C), nitrogen (N) and phosphorus (P) decreased insignificantly after 6years of enclosure. The ratio of C:N and C:P of soil increased in the (0-10)-cm and (10-20)-cm layers but decreased in the (20-30)-cm layer. In conclusion, prevention of grazing for 6years did not significantly improve soil quality or potential carbon sequestration in the alpine desert rangelands. We recommend the removal of fences intended for rangeland and biodiversity protection from such landscapes. © 2014 John Wiley & Sons, Ltd.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Effect of enclosure on soil carbon, nitrogen and phosphorus of alpine desert rangeland
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Shang, Z., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Cao, J., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Guo, R., Institute of Arid Agroecology, School of Life Sciences Lanzhou University Lanzhou 730020 Gansu Province PR China
Henkin, Z., Beef Cattle section, Newe-Ya'ar Research Center, Department of Agronomy and Natural Resources Agricultural Research Organization PO Box 1021 Ramat Yishay 30095 Israel
Ding, L., Institute of Arid Agroecology, School of Life Sciences Lanzhou University Lanzhou 730020 Gansu Province PR China
Long, R., State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 Gansu Province PR China
Deng, B., The Institute of Grassland Science, College Animal Science and Technology China Agricultural University Beijing 100094 PR China
Effect of enclosure on soil carbon, nitrogen and phosphorus of alpine desert rangeland
Enclosures have been set-up in rangelands in China since about 1980 to control grazing. This was performed in order to favour the recovery of degraded vegetation and soil. Alpine desert rangeland is an important ecosystem in China, and enclosure was considered a means of rangeland restoration for long-term grazing. Soil properties were studied in a 6-year enclosure experiment, which found that without grazing, vegetation cover and aboveground plant biomass increased significantly. A positive, but not significant, trend in soil bulk density was also found. However, the storage of soil carbon (C), nitrogen (N) and phosphorus (P) decreased insignificantly after 6years of enclosure. The ratio of C:N and C:P of soil increased in the (0-10)-cm and (10-20)-cm layers but decreased in the (20-30)-cm layer. In conclusion, prevention of grazing for 6years did not significantly improve soil quality or potential carbon sequestration in the alpine desert rangelands. We recommend the removal of fences intended for rangeland and biodiversity protection from such landscapes. © 2014 John Wiley & Sons, Ltd.
Scientific Publication
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