CAJ | 학술논문

土壤利用和植被覆盖对生态环境有重要的影响,改善土壤物理化学特性有利于退化土地的恢复.研究发现,随着茶树生长年限的延长,0～20 cm土壤含水量、阳离子代换量逐渐提高,＞2.0 mm水稳性团聚体数量也逐渐增多,但pH值逐渐降低;相关性分析也表明,植被恢复年限与土壤含水量(P<0.01)、阳离子交换量(P<0.05)和>2.0 mm水稳性团聚体数量(P<0.01)呈显著的正相关,与pH值呈显著的负相关(P<0.01).由此可以说明,耕地退耕后种植茶树,随着时间的延长,土壤结构得到改善,有利于减缓水土流失.
토양이용화식피복개대생태배경유중요적영향,개선토양물이화학특성유리우퇴화토지적회복.연구발현,수착다수생장년한적연장,0～20 cm토양함수량、양리자대환량축점제고,＞2.0 mm수은성단취체수량야축점증다,단pH치축점강저;상관성분석야표명,식피회복년한여토양함수량(P<0.01)、양리자교환량(P<0.05)화>2.0 mm수은성단취체수량(P<0.01)정현저적정상관,여pH치정현저적부상관(P<0.01).유차가이설명,경지퇴경후충식다수,수착시간적연장,토양결구득도개선,유리우감완수토류실.
Land use and vegetation coverage had important effects on the ecological environment. It was propitious to the restoration of degraded soil for improving the physical and chemical properties of soil. It was found that the water content, the positive ion exchange capacity of 0-20 cm soil increased gradually with the prolonging of the growing years of tea trees. >2.0 mm water-stable aggregates content gradually increased, whereas pH gradually decreased during the growth of tea trees. The correlation analysis also showed that the restoration years of vegetation had a significant positive correlation with soil water content (P<0.01), positive ion exchange capacity (P<0.05) and >2.0 mm water-stable aggregates (P<0.01 ). And the restoration years of vegetation had a significant negative relationship with pH value. After the cultivated land was returned to plant tea trees, the soil structure was improved with the prolonging of time, which was favorable for alleviating the soil and water loss.