By combining the observation of the soil profile at field and the chemical and physical analysis in laboratory, a study on the hydro-physical properties of soil in six different vegetation types and the dynamics of water content after rain was conducted in Wanchanggou, Guangyuan City to find out the vegetation types with effective water-conservation functions in order to serve the ecological restoration in the low hill heavy rain area upper the Jialing River. Results showed that:the hydro-physical properties of soil in the mixed Alnus cremastogyne and Cupressua Leyland forest (AcCl) were best. But in the depth of 0-20 cm. The properties of soil in the abandoned cropland (Fm) was better than that in the AcCl. The soil bulk densities varied significantly between the layers of 0-20 cm and 20-40 cm in all the six vegetation types except that in the Robinia pseudoacacia shrub forest (RpII), and the changes of the maximum and the capillary moisture capacity between layers were significant only in the Fm and in the AcCl. Of these stands, the AcCl had the shortest water-absorbing period and the strongest moisture changes in the upper layer (0-15 cm). In the same stand, the deeper the soil layer, the slighter the soil moisture varied, and the longer the soil moisture accumulating process lasted.
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机译:Dynamics of Soil Microbial Properties following Land Utilization Types in a Karst Region, Southwest ChinaAU Liu, Yan Song, Min Peng, Wanxia Song, Tongqing (songtongq@isa.ac.cn) Zeng, Fu-ping Du, Hu Cai, Desuo
机译:Intra- and Inter-annual Variation of Soil Microbial and Enzymatic Response to Water and Nitrogen Addition in a Chinese Semi-arid SteppeAU Sun, Liangjie Dong, Yunshe Qi, Yuchun (qiyc@igsnrr.ac.cn) He, Yating Peng, Qin Liu, Xinchao Jia, Junqiang Guo, Shufang Cao, Congcong