Does continuous straw returning keep China farmland soil organic carbon continued increase? A meta-analysis
| Autor: | Yue Ling, Tongchao Wang, Shah Jahan Leghari, Xiao-Kang Guan, Yibo Qiao, Pengnian Wu, Yanli Wang, Fujian Mei, Changshuo Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
China
Environmental Engineering Farms 0208 environmental biotechnology Continuous cropping 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Zea mays Soil Animal science Precipitation Waste Management and Disposal 0105 earth and related environmental sciences Sowing Agriculture General Medicine Soil carbon Straw Carbon 020801 environmental engineering Tillage Loam Rotation system Environmental science |
| Zdroj: | Journal of environmental management. 288 |
| ISSN: | 1095-8630 |
| Popis: | The straw returning technique is one of the important measures for soil carbon sequestration and soil organic carbon (SOC) promotion in the world. However, the patterns of straw utilization in China with various methods among regions, the effect and variability of straw returning on SOC in different areas of China remain uncertain. We conducted a meta-analysis of 446 sets of data from 95 studies in China field to explore how the environmental factors and field management affect SOC after straw returning. The results showed that straw returning to the field significantly increase SOC content by an average of 13.97% (n = 446). The SOC increased effects are more obvious under areas with mean annual precipitation (MAP) > 500 mm, temperature (MAT) > 10 °C, loam or sandy soil, or the initial SOC content |
| Databáze: | OpenAIRE |
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