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福州市绿地景观土壤溶解性有机碳、微生物量碳及酶活性

仝川1;董艳2;杨红玉1   

  1. 1福建师范大学地理科学学院湿润亚热带生态-地理过程省部共建教育部重点实验室, 福州 350007;2山西省长治市第五中学, 山西长治 046000
  • 收稿日期:2008-09-25 修回日期:1900-01-01 出版日期:2009-06-10 发布日期:2009-06-10

Soil dissolved organic carbon, microbial biomass carbon, and enzyme activity of urban green lands in Fuzhou.

TONG Chuan1;DONG Yan2;YANG Hong-yu1   

  1. 1School of Geographical Sciences, Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China;2The Changzhi Fifth Middle School, Changzhi 046000, Shanxi, China
  • Received:2008-09-25 Revised:1900-01-01 Online:2009-06-10 Published:2009-06-10

摘要: 以福州市建成区自然绿地和人工管理绿地为对象,研究不同绿地景观类型土壤溶解性有机碳、微生物量碳及土壤酶活性的差异和垂直结构。结果表明:与自然绿地景观土壤相比,人工管理绿地不同土层溶解性有机碳含量明显增加,且变异性较大,土壤微生物量碳含量平均值下降,各土层脲酶含量均低于自然绿地;土壤溶解性有机碳、微生物量碳和酶活性均随着土壤深度的增加而降低;土壤表层过氧化氢酶活性与溶解性有机碳含量呈显著正相关,10~20 cm土层脲酶活性与微生物量碳呈显著正相关。

关键词: 磷, 硫, 生物循环, 高山冻原, 长白山

Abstract: With the expansion of urban area and the conversion of non-urbanized landscape to urbanized one, more attention was paid on the urban ecosystem carbo n cycle. Taking the natural and manually managed urban green lands in Fuzhou Cit y as test objectives, this paper studied the profile distributions of soil disso lved organic carbon, microbial biomass carbon, and catalase and urease activitie s. Comparing with natural green lands, the manually managed urban green lands ha d obviously higher soil dissolved organic carbon content but lower soil microbia l biomass carbon content and lower urease activity. The soil dissolved organic c arbon, microbial biomass carbon, and enzyme activities of the two kinds of green lands all decreased with increasing soil depth. A significant positive correlat ion was observed between soil catalase activity and dissolved organic carbon in 0〖KG-*2〗-〖KG-*7〗10 cm layer, and between soil urease activity and microbial biomass carbon in 10〖KG-*2〗-〖KG-*7〗20 cm layer.

Key words: Phosphorus, Sulphur, Bio-cycling, Alpine Tundra, Changbai Mountains