摘要
通过模拟试验比较了位于亚热带的湖南省境内5种成土母质发育的红壤的酸缓冲能力及缓冲特性,揭示了不同母质发育的红壤在缓冲过程中的一致性和缓冲能力、酸害容量的差异性。5种红壤缓冲能力、酸害容量的相对顺序为:板岩红壤>石灰岩红壤>花岗岩红壤>砂岩红壤>第四纪红土红壤。根据土壤的酸敏感程度分级,可将前3种土壤划归为酸敏感性土壤,后两种归为酸极敏感性土壤。上述研究可为亚热带红壤区土壤酸化治理和重点治理区的选择提供科学依据。
The buffer capacities and the characters of five types of red soils, which are originated from different materials in the subtropical area of Hunan Province, is compared through experiments. It shows that differences of the buffer capacities (BC) and acid damage capacities (ADC)exist among those soils while the soil buffer processes are similar. The relative order of the BC and ADC of those soils are proposed as follows: slate red soil>limestone red soil >granite red soil >sandstone red soil >quaternary red soil. According to the classified sensitivity degrees, three of those soils belonged to sensitive soils and the other two are extremely sensitive ones. Such study provides scientific proof for controlling the acid soils and for choosing the key harnessing acidic area.
出处
《热带地理》
2003年第1期26-29,共4页
Tropical Geography
基金
中国科学院知识创新项目(KZCX1-06)资助
关键词
亚热带
红壤
缓冲能力
酸害
相对敏感性
Buffer character
Buffer capacity
Acid damage capacity
Relative sensitivity
Red soil
Subtropical
