CAJ | 학술논문

以贵州关岭-贞丰花江岩溶石漠化综合治理示范区不同土地利用类型和不同石漠化治理模式的5个泉点为研究对象,分析泉水水化学特征及溶解无机碳(DIC)稳定同位素(δ13CDIC )的分布和变化,揭示石漠化治理的岩溶效应和水质效应.结果表明,研究区地下水水化学类型为重碳酸-钙型(HCO3-Ca),人类活动干预相对较少的水井湾、戈贝和毛家湾泉水的水质较好,而受农业活动影响较多的吊井和谭家寨泉水主要离子浓度和电导率都较高,水质相对较差；泉水 pH 值、方解石饱和指数(SIc)和二氧化碳分压(pCO2)对土地利用或石漠化治理反应敏感,表现为水井湾、吊井、谭家寨和戈贝泉水中的 pH 值和 SIc小于毛家湾泉水,相反pCO2明显大于毛家湾泉水；水井湾、毛家湾、戈贝泉水中的(Ca2++ Mg2+)/ HCO -3当量比接近1：1,以碳酸风化碳酸盐岩为主,吊井和谭家寨泉水中(Ca2++ Mg2+)相对 HCO -3明显偏高,主要是因为受到农业活动强烈影响,可能有硫酸和硝酸参与了碳酸盐岩的溶蚀；此外,雨季由于生物旺盛,泉水中的δ13CDIC值较旱季偏轻；不同泉水中δ13CDIC平均值大小顺序为吊井(-12.79‰)﹤水井湾(-12.48‰)﹤戈贝(-10.76‰)﹤毛家湾(-10.30‰)﹤谭家寨(-6.70‰),反映了石漠化和农业施肥影响下的地下水的δ13CDIC值偏重,石漠化治理后泉水的δ13CDIC值则偏轻.
이귀주관령-정봉화강암용석막화종합치리시범구불동토지이용류형화불동석막화치리모식적5개천점위연구대상,분석천수수화학특정급용해무궤탄(DIC)은정동위소(δ13CDIC )적분포화변화,게시석막화치리적암용효응화수질효응.결과표명,연구구지하수수화학류형위중탄산-개형(HCO3-Ca),인류활동간예상대교소적수정만、과패화모가만천수적수질교호,이수농업활동영향교다적조정화담가채천수주요리자농도화전도솔도교고,수질상대교차；천수 pH 치、방해석포화지수(SIc)화이양화탄분압(pCO2)대토지이용혹석막화치리반응민감,표현위수정만、조정、담가채화과패천수중적 pH 치화 SIc소우모가만천수,상반pCO2명현대우모가만천수；수정만、모가만、과패천수중적(Ca2++ Mg2+)/ HCO -3당량비접근1：1,이탄산풍화탄산염암위주,조정화담가채천수중(Ca2++ Mg2+)상대 HCO -3명현편고,주요시인위수도농업활동강렬영향,가능유류산화초산삼여료탄산염암적용식；차외,우계유우생물왕성,천수중적δ13CDIC치교한계편경；불동천수중δ13CDIC평균치대소순서위조정(-12.79‰)﹤수정만(-12.48‰)﹤과패(-10.76‰)﹤모가만(-10.30‰)﹤담가채(-6.70‰),반영료석막화화농업시비영향하적지하수적δ13CDIC치편중,석막화치리후천수적δ13CDIC치칙편경.
Five springs representing different land-use types and different karst rocky desertification treatment models were chosen at the Huajiang Karst Rocky Desertification Treatment Demonstration Site in Guanling-Zhenfeng Counties in Guizhou, to analyze the features of underground water chemistry and dissolved inorganic carbon isotopes (δ13CDIC ) and reveal the effect of rocky desertification treatment on karstification and water quality. It was found that, the underground water type of the research area was HCO3-Ca; the water quality of the springs which were relatively less affected by human activities including Shuijingwan Spring (SJW), Gebei Spring (GB), and Maojiawan Spring (MJW) was better than those relatively more affected by human activities including Diaojing Spring (DJ) and Tanjiazhai Spring (TJZ), the main ion concentrations and electrical conductivity of which were higher; pH, SIc and pCO2 were sensitive to land-use types and rocky desertification treatment, which could be shown by the higher pH and SIc and lower pCO2 in MJW than those in the other four springs; (Ca2 + + Mg2 + ) / HCO -3 of SJW, MJW and GB were nearly 1: 1, dominated by carbonate rock weathering by carbon acid, while the (Ca2 + + Mg2 + ) of DJ and TJZ was much higher than HCO -3 , suggesting that sulfate and nitrate might also dissolve carbonate rock because of the agricultural activities; δ13CDIC was lighter in wet season because of the higher biological activities; the average δ13CDIC was in the order of DJ ( - 12. 79‰) ﹤ SJW ( - 12. 48‰) ﹤ GB ( - 10. 76‰) ﹤ MJW ( - 10. 30‰) ﹤ TJZ( - 6. 70‰), which demonstrated that δ13CDIC would be heavier after rocky desertification and lighter after the rocky desertification are treated and controlled.