沼泽湿地垦殖前后土壤温度变化及其对土壤热状况的影响

应用生态学报

沼泽湿地垦殖前后土壤温度变化及其对土壤热状况的影响

宋长春^1,2；王毅勇¹；阎百兴¹；张金波¹；娄彦景¹

¹中国科学院东北地理与农业生态研究所，长春130012;²中国科学院大气物理研究所，北京 100029

收稿日期:2003-11-18 修回日期:2004-03-22 出版日期:2005-01-18

Variation of soil temperature before and after cultivation of marsh and its effect on soil thermal regime

SONG Changchun^1,2,WANG Yiyong¹,YAN Baixing¹,Zhang Jinbo¹,LOU Yanjing¹

¹Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China;²Institute of Atmospheric Physics, Chinese Academy of Sciences,Beijing 100029,China

Received:2003-11-18 Revised:2004-03-22 Online:2005-01-18

摘要/Abstract

摘要： 沼泽湿地具有重要的生态与环境功能，其对全球气候变化较为敏感，土壤温度变化能够很好地指示气候的波动.沼泽湿地土壤温度呈明显的“正弦曲线”型年、季动态，不同深度土壤年均温度呈“U”型特征.5～9月份沼泽湿地10 cm土壤平均温度为11.69±3.04 ℃，垦殖后农田土壤为15.80±3.41 ℃沼泽湿地土壤8、9月份土壤呼吸分别为156.41±76.91 mg·m^-2·h^-1和116.75±57.43 m^-2·h^-1,是同时期农田土壤呼吸通量的14.6%和13.1%，土壤温度与土壤呼吸通量呈显著正相关关系.

关键词: 杨树无性系, 渗透胁迫, 光合作用光抑制, 活性氧, 保护酶

Abstract: Marsh has important ecological and environmental functions and is sensitive to the global climate change,while the variation of soil temperature could better indicate the climate fluctuation.Our study showed that the annual and seasonal dynamic changes of soil temperature in marsh showed distinctly “sinusoid" character curve,whereas the mean annual temperature of different soil depths showed “U" feature.From May to September,the mean temperature at the topsoil (10 cm) of uncultivated marsh was 11.69±3.04℃,while that of cultivated marsh was 15.80±3.41 ℃.The soil respiration rate of uncultivated marsh in August and September was 156.41±76.91 mg·m^-2·h^-1 and 116.75±57.43 mg·m^-2·h^-1,accounted for 14.6% and 13.1 % of that of cultivated marsh,respectively.The soil temperature was significantly positively correlated with soil respiration.

Key words: Poplar clone seedlings, Osmotic stress, Photo inhibition of photosynthesis, Reactive oxygen species, Protecting enzymes

宋长春^1,2；王毅勇¹；阎百兴¹；张金波¹；娄彦景¹. 沼泽湿地垦殖前后土壤温度变化及其对土壤热状况的影响[J]. 应用生态学报.

SONG Changchun^1,2,WANG Yiyong¹,YAN Baixing¹,Zhang Jinbo¹,LOU Yanjing¹ . Variation of soil temperature before and after cultivation of marsh and its effect on soil thermal regime[J]. Chinese Journal of Applied Ecology.

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