四川中亚热带扁刺栲-华木荷群系不同演替阶段土壤含水率的研究

摘要/Abstract

摘要： 采用定位观测和方差分析的方法,对灌木以及10、40和200年生的扁刺栲华木荷群落的土壤绝对含水率的时空特征进行了研究.结果表明,除10年生栲木荷群落外,群落土壤含水率与土壤深度的关系极显著;不同年龄段的栲木荷林地土壤含水率与季节的关系不显著;除10余年生的栲木荷群落外,群落土壤含水率与坡向的关系不显著;土壤含水率与演替阶段的关系极显著;栲木荷群落发育10和40年后,其土壤涵养功能分别恢复到原始林的73%和85%;不同演替阶段的群落土壤含水率在时空结构上具有明显的波动性与混沌性.

关键词: 土壤含水率, 四川, 栲木荷群系, 演替阶段, 中亚热带, 土地利用, 页岩气开发, 植被生物量, 井场

Abstract: The temporal spatial characteristics of the percentage of soil absolute moisture content (PSAMC, defined as the percentage of soil water to dried soil) at different succession stages of C.platyacantha S.sinensis formation such as brush, 10, 40, and 200 years old C.platyacantha S.sinensis communities were studied, using the methods of orientation observation and variance analysis under the similar conditions including climates, topographies, landforms, and soils. The results indicated that the relationship between soil depth and PSAMC of all communities except for 10 years old community were significant. The effects of season on PSAMC at different stages of all C.platyacantha S. sinensis communities was not significant. Similarly, aspect had no notable effects on PSAMC of all communities but 10 years old community. Different succession phases had significant effects on PSAMC (0～60cm depth). The water retention ability of soil was restored up to 73% and 85% of primary C. platyacantha S. sinensis forests when C.platyacantha S.sinensis communities were 10 and 40 years old. PSAMC of different succession phases of C.platyacantha S. sinensis had obvious characteristics of fluctuation and chaos.

Key words: Percentage of soil absolute moisture content (PSAMC), Sichuan, Castanopsis platyacantha Schima sinensis formation, Succession stage, Central subtropical zone, vegetation biomass, shale gas ming, land use, well-drilling field

中图分类号:

Q948.112.3

潘开文, 张远彬. 四川中亚热带扁刺栲-华木荷群系不同演替阶段土壤含水率的研究[J]. 应用生态学报, 2003, (2): 165-169.

PAN Kaiwen, ZHANG Yuanbin . Percentage of soil absolute moisture content at different succession stages of Castanopsis platyacantha-Schima sinensis formation in central subtropical zone of Sichuan Province[J]. Chinese Journal of Applied Ecology, 2003, (2): 165-169.

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