CAJ | 학술논문

采用空间序列代替时间序列的方法, 研究喀斯特石漠化区植被演替过程中土壤质量变化特征.以广西都安澄江小流域为例,选取4个植物演替阶段,即乔木、灌丛、灌草丛、草丛的典型样地,对该地区土壤理化性质进行分析,研究植被演替对土壤质量特征的影响.结果表明:在石漠化地区植被演替过程中,土壤含水量、pH值、有机质、氮、磷、钾等含量均有一定程度的下降.导致这一变化的主要原因是植被生长情况、土壤养分积累能力等.
채용공간서렬대체시간서렬적방법, 연구객사특석막화구식피연체과정중토양질량변화특정.이엄서도안징강소류역위례,선취4개식물연체계단,즉교목、관총、관초총、초총적전형양지,대해지구토양이화성질진행분석,연구식피연체대토양질량특정적영향.결과표명:재석막화지구식피연체과정중,토양함수량、pH치、유궤질、담、린、갑등함량균유일정정도적하강.도치저일변화적주요원인시식피생장정황、토양양분적루능력등.
The characteristic of soil quality during the vegetation succession process about rocky desertification in Karst regions of Guangxi was studied by using the method of the spatial sequence instead of the time series. Taking Chengjiang small watershed in Du'an County of Guangxi was chosen as an example, four stages of the reversal succession process about rocky desertification were chosen, including the typical plots of the arbor,shrub, bushes and short grass. The chemical and biological characters of soil and further discuss repair state of soil quality during the vegetation succession process about rocky desertification were studied. The results showed that different succession stage led to the remarkable discrepancy of the chemical and biological character of soil. With the improvement of each soil index during the developing process of the vegetation to higher stage, soil quality generally presents improved state. With the positive succession of vegetation, soil quality presented the rising trend. The positive evolution of natural vegetation was an effective path of improving the soil quality and it just contrasted with the process of rocky desertification.