| 引用本文: | 高光,高锡芸,秦伯强,季江.太湖水体中碱性磷酸酶的作用阈值.湖泊科学,2000,12(4):353-358. DOI:10.18307/2000.0409 |
| GAO Guang,GAO Xiyun,QIN Boqiang,JI Jiang.Experimental Study on the PO43--P Threshold of the Alkaline Phosphatase Activity in Taihu Lake. J. Lake Sci.2000,12(4):353-358. DOI:10.18307/2000.0409 |
|
| 摘要: |
| 对不同PO43--P浓度下,不同粒级组分中碱性磷酸酶活性的分布及其变动规律的研究表明:①随着水体中PO43--P浓度的增加,水体中总碱性磷酸酶活性 (TAPA)相应地减少 (r=-0.586,n=55).水体中的TAPA均值,在PO43--P浓度范围为 0-0.0 10mg·L-1,无显著差异;而当PO43--P浓度 >0.0 10mg·L-1时,差异极显著 (P<0.0 1).②水体中的碱性磷酸酶在不同粒级组分中的分布差异明显,其中以溶解性碱性磷酸酶活性 (DAPA)所占的比例最大,浮游植物体中的碱性磷酸酶活性 (PAPA)所占的比例次之,细菌体中的碱性磷酸酶活性 (BAPA)所占的比例最小.③随着水体中的PO43--P浓度的增加,水体中的PAPA也相应地减少.水体中的PAPA的活性均值,在PO43--P浓度范围为 0-0.0 2 0mg·L-1时,无显著差异;而当PO43--P浓度 >0.0 2 0mg·L-1时,差异显著 (P<0.0 5);当PO43--P浓度 >0.2 0 0mg·L-1,差异极显著 (P<0.0 1).④水体中的BAPA未表现出与PO43--P浓度的相关性. |
| 关键词: 太湖 碱性磷酸酶 阈值 |
| DOI：10.18307/2000.0409 |
| 分类号: |
| 基金项目:中国科学院"九五"重点项目(KZ952-J1-212)、院"九五"重大项目(KZ951-B1-205-02)、院特别支持项目(KZ-T-04-04)及中国科学院南京地理与湖泊研究所所长基金联合资助. |
|
| Experimental Study on the PO43--P Threshold of the Alkaline Phosphatase Activity in Taihu Lake |
|
GAO Guang, GAO Xiyun, QIN Boqiang, JI Jiang
|
|
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
|
| Abstract: |
| The composition and activity of alkaline phosphatase in waters with dif ferent PO43--P concentrations were studied ex perimentally.The results show:①The total alkaline phosphatase activity (TAPA)was decreased with the increase of PO43--P concentration (r=-0.586,n=55). Based on the statistic analyses, when PO43--P concentrations were between 0 to 0.010mg·L-1, no significant dif ference was found in the TAPA.When PO43--P concentrations exceeded 0.010mg·L-1, the TAPA was significant difference (P<0.01).②The contents of APA in phy toplankton (PAPA), bacteria (BAPA)and dissolved (DAPA)were different.The ratio of DAPA to TAPA was the highest and BAPA was the smallest.③With the increasing of PO43--P concent ration, the PAPA decreased.When PO43--P concent rations were between 0 to 0.020mg· L-1, over 0.020mg·L-1 and over 0.200mg·L-1, the PAPA were no significant, significant (P<0.05)and highly significant, respectively (P<0.01).④The BAPA showed no signif icant relationship with the PO43--P concent ration. |
| Key words: Taihu Lake alkaline phosphatase activity threshold value of phosphatic concentration |
