南方红壤丘陵区油桐人工林土壤水分动态

应用生态学报

南方红壤丘陵区油桐人工林土壤水分动态

黄志刚^1,2;曹云¹;欧阳志云¹;屠乃美³;郑华¹

¹中国科学院生态环境研究中心城市与区域生态国家重点实验室，北京100085；
²中国科学院寒区旱区环境与工程研究所生态与农业研究室, 兰州730000；
³湖南农业大学农学院，长沙 410128

收稿日期:2006-02-13 修回日期:2006-12-05 出版日期:2007-02-10 发布日期:2007-02-10

Dynamics of soil water under Vernicia fordii plantation in hilly red soil region of Southern China

HUANG Zhi-gang^1,2; CAO Yun¹; OUYANG Zhi-yun¹; TU Nai-mei³; ZHENG Hua¹

¹State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing 100085, China;
²Department of Ecology & Agriculture, Cold and Arid Regions Environment and Engineering
Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
³College of Agronomy, Hunan Agricultural University, Changsha 410128, China

Received:2006-02-13 Revised:2006-12-05 Online:2007-02-10 Published:2007-02-10

摘要/Abstract

摘要： 利用时域反射仪(TDR)定位监测方法,研究了南方红壤丘陵区油桐人工林土壤水分动态规律.结果表明:不同月份间土壤蓄水量差异达极显著水平,研究时段内土壤水分动态变化可划分为土壤水分积累期、土壤水分消耗期和土壤水分稳定期3个时期;油桐人工林土壤水分垂直变化显著,且不同季节的变化规律各异;土壤蓄水量与大气相对湿度(RH)、大气温度(t)、饱和水汽压差(VPD)、降雨量(R)等气象因子显著相关(P<0.05); 次降雨后,土壤水分损失率与干旱天数呈显著的双曲函数关系,土壤蓄水量与雨后干旱天数呈显著的线性负相关(P<0.05);在次降雨后的持续干旱条件下,土壤水分损失随着土层深度的增加逐渐趋于平缓.

关键词: 栗瘿蜂, 虫瘿, 发生量, 板栗, 天敌

Abstract: By using time domain reflectometry (TDR), a fixed-position monitoring was made on the dynamic characteristics of soil water under Vernicia fordii plantation in the hilly red soil region of Southern China. The results showed that there was a significant difference in the soil water storage among different months, and the dynamics of soil water could be described as the phases of accum-ulation, depletion, and stabilization. Soil water had a significant variation in its vertical distribution, and the variation pattern differed in different seasons. Significant correlations existed between soil water storage and meteorological factors such as relative humidity (RH), air temperature (t), vapor pressure deficit (VPD) and rainfall (R) (P<0.05). After rain, soil water loss had a significant hyperbolic correlation with drought duration, while soil water storage had a significant linear negative correlation with this duration (P<0.05). With the extension of drought duration after rain, soil water loss tended to vary gently with increasing soil depth.

Key words: Dryocosmus kuriphilus, Cecidum, Occurrence quantity, Chestnut, Natural enemy

黄志刚^1,2;曹云¹;欧阳志云¹;屠乃美³;郑华¹. 南方红壤丘陵区油桐人工林土壤水分动态[J]. 应用生态学报.

HUANG Zhi-gang^1,2; CAO Yun¹; OUYANG Zhi-yun¹; TU Nai-mei³; ZHENG Hua¹ . Dynamics of soil water under Vernicia fordii plantation in hilly red soil region of Southern China[J]. Chinese Journal of Applied Ecology.

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