生境和地形对伊犁绢蒿土壤养分的影响

Influence of habitats and terrains on soil nutrients of Seriphidum transiliense desert grassland

为了客观地了解生境和地形对土壤养分的影响,为畜牧业可持续发展和生态环境建设提供理论依据,本研究采用正规野外取样方法结合室内常规土壤样品分析方法,对新疆天山北坡不同生境和不同地形条件下伊犁绢蒿(Seriphidium transiliense)荒漠草地土壤养分进行了分析。结果表明,1)生境和地形对伊犁绢蒿荒漠草地土壤化学性质的变化均有促进或抑制作用,从而进一步影响地上生物量;2)随着生境从西到东,土壤速效养分和有机质的土壤剖面变化相同,都为0~10>10~20>20~30 cm,而pH值的土壤剖面变化则相反,为0~10<10~20<20~30 cm;3)不同地形和不同生境的土壤剖面中养分变化规律相同。

A field traditional survey was conducted to determine the effect of habitats and terrains on soil nutrients of Seriphidum transiliense desert grassland in the north slope of Tianshan Mountain for providing useful information for sustainable development of the animal husbandry and improvement of ecological environment.The results of this study showed that habitats and terrains greatly affected the soil chemical characteristics of S.transiliense desert grassland,and further affected the plant biomass.The avai...