Publications by authors named "Jing Quan Ren"
[Applicability of five drought indices for agricultural drought evaluation in Jilin Province, China.].
Ying Yong Sheng Tai Xue Bao
August 2018
Drought is a severe meteorological disaster on agriculture in Jilin Province. Agricultural drought can be represented by drought indices, but there is no universal applicable index. It is of great significance to examine the applicability of drought indices for agricultural drought evaluation.
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- Researchers conducted field experiments to examine how different land use types affect soil respiration and its spatial variability.
- The study found significant differences in soil respiration rates across various land use regimes, with rates ranging from 1.82 to 7.46 micromol x (m2 x s)(-1), largely influenced by soil organic carbon content.
- A model combining soil organic carbon, available phosphorous, and tree diameter at breast height explained 92.8% of the variability in soil respiration within forest ecosystems.
Article Synopsis
- The study investigated how simulated warming affects soil respiration in cropland with a winter wheat-soybean rotation using randomized plots and a CO2 flux measurement system.
- Results showed that soil respiration rates were higher in the warmed plots compared to controls, with significant increases observed in late growth stages of both crops.
- The relationship between soil respiration and temperature was modeled using exponential functions, revealing that warming increased the temperature sensitivity of soil respiration significantly more than in control treatments.