Abstract:
The article mainly researched properties of roots,Soil bulk density,soil permeability and soil anti-scourability of vegetation of the spruce forest +Chinese seabucksor at different time of returning crop land to forest in DaTong County of QingHai.It also includes the influence and correlation among the first three and last factors.The results show that were as follows:As time lasts,underground roots increases,soil bulk density reduces,the first and final infiltration rate and soil anti-scourability have a crescent trend.Comparing with cropland,soil anti-scourability of available roots(diameter of roots1mm) in surface soil(0~20cm) was increased by 25.94%,36.42%,63.40%,137.04%,415.17%,708.13%.The soil anti-scourability has remarkable Pearson correlation with soil bulk density and final infiltration rate;The change rule of rooting density and soil anti-scourability,added value of soil anti-scourability could be demonstrated by following functions:y=0.6662e6E-06x、y=12.228e1E-05x,and the correlation coefficient respectively is 0.9586,0.9784.
Key words:
Conversion from cropland into forest land,
The QingHai spruce forest,
Soil permeability,
Soil anti-scourability
CLC Number:
LV Fen-tao, HAN ze, ZHANG Wei-hua, ZHOU Xin-cheng. Study on Anti-scourability of Converting Cropland into Forest Soil in Datong County, Qinghai Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(S1): 85-90. doi: 10.7668/hbnxb.2005.S1.023.