全球变暖对太行山植被生产力及土壤水分的影响

应用生态学报 ›› 2002, Vol. ›› Issue (6): 667-671.

全球变暖对太行山植被生产力及土壤水分的影响

杨永辉¹, 王智平¹, 佐仓保夫², 唐常源², 新藤静夫²

1. 中国科学院石家庄农业现代化研究所, 石家庄 050021;
2. Department of Earth Sciences, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

收稿日期:2000-12-13 修回日期:2001-11-01 出版日期:2002-06-15
通讯作者: 杨永辉,男,1965年生,研究员,现在日本国立环境研究所进行客座研究,主要从事全球生态学研究,发表论文30余篇.E-mail:yonghui.yang@nies.go.jp
基金资助:
国家自然科学基金资助项目(49671014)

Effects of global warming on productivity and soil moisture in Taihang Mountain: A transplant study

YANG Yonghui¹, WANG Zhiping¹, Yasuo SAKURA², TANG Changyuan², Shizuo SHINDO ²

1. Shijiazhuang Institute of Agricultural Modernization, Chinese Academy of Sciences, Shijiazhuang 050021;
2. Department of Earth Sciences, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

Received:2000-12-13 Revised:2001-11-01 Online:2002-06-15

摘要/Abstract

摘要： 将相同的自然植被用Lysimeter从高海拔下移至低海拔,温度升高2℃,同时设置平均降水、增加10%降水、增加20%降水、减少10%降水和减少20%降水5个降水处理,模拟全球变暖带来的温度升高和降水变化对植被生产力和土壤水分的影响.两年的野外实验表明,温度升高造成生态适应性差的野古草(Arundinelia hirta)生产力显著下降,致使整个测试群落生产力降低,低海拔实验点生产力显著低于高海拔实验点,温度升高对铁杆蒿(Artemisia sacrorum)和黄背草(Themeda japonica)的影响较小.太行山区的植被对降水的变化反映敏感,降水增加使植被的生产力水平显著提高,其中降水增加20%的处理生产力比平均降水处理的生产力增加22%.增加降水处理的土壤含水量显著高于平均降水和降水减少的实验处理.由于植被的减少,温度升高的实验点从第二年开始土壤水分较高.

关键词: 全球变暖, 降水, 土壤湿度, 生产力

Abstract: By transferring natural vegetation with soil from high elevation to low elevation,a 2℃ warmer condition was created. In each site,5 different precipitation treatments were applied to test if the temperature and precipitation changes under global warming will result in a lower soil moisture condition and,therefore,feedback negatively on vegetation productivity of the Taihang Mountain. Two years' field experiment suggested that,because of the low adaptability of Arundinelia hirta under a warmer condition,its productivity decreased significantly at the end of the experiment. Productivities of grass with better adaptability such as Themeda japonica and Artemisia sacrorum did not change significantly between the two sites. Tested vegetation demonstrated a significant increase in productivity under the higher precipitation condition by showing 22% increase in productivity under 20% higher precipitation treatment. Soil moisture condition under treatments with higher precipitation was generally higher than that under treatments with lower precipitation. In the warmer site,soil moisture became higher since the beginning of the second year.

Key words: Global warming, Precipitation, Soil moisture, Productivity

中图分类号:

Q948

杨永辉, 王智平, 佐仓保夫, 唐常源, 新藤静夫. 全球变暖对太行山植被生产力及土壤水分的影响[J]. 应用生态学报, 2002, (6): 667-671.

YANG Yonghui, WANG Zhiping, Yasuo SAKURA, TANG Changyuan, Shizuo SHINDO . Effects of global warming on productivity and soil moisture in Taihang Mountain: A transplant study[J]. Chinese Journal of Applied Ecology, 2002, (6): 667-671.

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