贵州农业科学
貴州農業科學
귀주농업과학
GUIZHOU AGRICULTURAL SCIENCES
2014年
2期
190-193
,共4页
土壤%地球化学特征%环境质量%评价%黔北岩溶区
土壤%地毬化學特徵%環境質量%評價%黔北巖溶區
토양%지구화학특정%배경질량%평개%검북암용구
soil%pedogeochemical characteristics%environmental quality%evaluation%Qianbei karst area
为探明贵州岩溶峰丛山区石灰土的地球化学特征及环境质量,以乌江下游石渡至黄家坪段岩溶区不同时代的石灰土为样本,进行调查、采样、检测、分析及质量评价。结果表明:石灰土质地疏松,受异源母质影响轻微,母质特性明显,其中 P2 w、P1 q 石灰土熟化度高,富铝化程度高,质地粘重;元素的迁移流失、亏损(占78%)是山区碳酸盐岩风化成土的主要特征。土壤营养元素综合评级为丰富级,其中,Fe2 O3、Ni、Al2 O3均丰富,MnO、Na2 O、Co、Zn 普遍贫乏至严重贫乏;超标危害元素为 Cd,属重度超标级,分布于 P2 w、P1 q 石灰土中,来源于 P2 w 地层底部煤系层中的富 Cd 元素。
為探明貴州巖溶峰叢山區石灰土的地毬化學特徵及環境質量,以烏江下遊石渡至黃傢坪段巖溶區不同時代的石灰土為樣本,進行調查、採樣、檢測、分析及質量評價。結果錶明:石灰土質地疏鬆,受異源母質影響輕微,母質特性明顯,其中 P2 w、P1 q 石灰土熟化度高,富鋁化程度高,質地粘重;元素的遷移流失、虧損(佔78%)是山區碳痠鹽巖風化成土的主要特徵。土壤營養元素綜閤評級為豐富級,其中,Fe2 O3、Ni、Al2 O3均豐富,MnO、Na2 O、Co、Zn 普遍貧乏至嚴重貧乏;超標危害元素為 Cd,屬重度超標級,分佈于 P2 w、P1 q 石灰土中,來源于 P2 w 地層底部煤繫層中的富 Cd 元素。
위탐명귀주암용봉총산구석회토적지구화학특정급배경질량,이오강하유석도지황가평단암용구불동시대적석회토위양본,진행조사、채양、검측、분석급질량평개。결과표명:석회토질지소송,수이원모질영향경미,모질특성명현,기중 P2 w、P1 q 석회토숙화도고,부려화정도고,질지점중;원소적천이류실、우손(점78%)시산구탄산염암풍화성토적주요특정。토양영양원소종합평급위봉부급,기중,Fe2 O3、Ni、Al2 O3균봉부,MnO、Na2 O、Co、Zn 보편빈핍지엄중빈핍;초표위해원소위 Cd,속중도초표급,분포우 P2 w、P1 q 석회토중,래원우 P2 w 지층저부매계층중적부 Cd 원소。
To explore the pedogeochemical characteristics and environmental quality of Guizhou typical karst mountain area,the lime soil samples collected in Wujiang downstream from Shidu to Huangjiaping with different age,were analyzed and evaluated.The results showed that the soil texture of lime soil was loose with less influence of heterogenous parent material.The parent material features were significant. the soils of P2 w and P1 q were of high ripening degree,high fersialitization degree and heavy texture;The weathering and pedogenesis of carbonate rocks were mainly characterized by migration,run off and loss (78%)of elements.The comprehensive evaluation degree of soil nutrient elements was richness.Fe2 O3 , Ni and Al2 O3 were rich,while MnO,Na2 O,Co and Zn ranged from poor to serious poor;severely overproof element Cd distributed in P2 w and P1 q soils and originated from coal series in the bottom of P2 w stratum.