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作 者 ：孙炳寅,朱长生

期 刊 ：生态学报 1989年 9卷 3期 页码：240~244

关键词：互花米草；

摘 要 ：种植互花米草的盐沼土中,细菌、放线菌和真菌的数量比对照盐沼土中多。就不同深度来说,15—30厘米土层中,细菌数最多。细菌总数的增减趋势是:夏秋两季最多,冬春两季较少。在各生理类群中,氨化细菌占优势;固氮细菌、硝化细菌次之;反硝化细菌和硫酸盆还原细菌最少。内源呼吸作用强度、添加葡萄糖后的呼吸作用强度、氧化丙酮酸的能力和氧化多酚化合物的能力皆显示出同样的趋势,即三年生草场土壤中生物活性最强,光滩土壤中生物活性最弱。在光滩土壤中,脲酶和过氧化氢酶活性很低,而种植互花米草的土壤中这两种酶活性较强,但与种植年限和季节变化无显著相关性。

Abstract:To find out the interrelationships between S,alterniflora and ils particular ecological environment, comparative studies on ecological distribution of soil microbes in one-,two- and three-year-old, S.altermflora marsh soil of Binghai,Jiangsu,were carried out in a 2-year-duration (1985-1986). Respiration Quotient(RQ), enzyme activity and their interrelationships were also determined. In the soil of S.alternif-lora planting salt marsh, numbers of bacteria, actinomycetcs and microfungi were found more than in ...

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