| A Comparative Study on the Microbiological Characteristics of Soils Under Different Land—Use Conditions from Karst Areas of Southwest China |
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| 引用本文： | 陈刚才 甘露 等. A Comparative Study on the Microbiological Characteristics of Soils Under Different Land—Use Conditions from Karst Areas of Southwest China[J]. 中国地球化学学报, 2001, 20(1): 52-58. DOI: 10.1007/BF03166849 |
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| 作者姓名： | 陈刚才 甘露 等 |
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| 作者单位： | [1]ChongqingInstituteofEnvironment,Chongqing400020,China [2]InstituteofGeochemistry,ChineseAcademyofScience |
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| 摘 要： | Microbiological and physical-chemical characteristics of subtropical forest,grassland and cropfield soils from the karst areas of Southwest China were investigated.The study revealed that the conversion of natural forest to other forms of land would lead to a reduction in soil organic C(26.2%-35.3%),total N(37.2%-55.8%),totalP(32.9%-43.6%),microbial biomass C(35.4%-49.1%),N(37.2%-55.8),and P(25.8%-41.9%).Comparative analysis of microbial activity in terms of basal soil respiration showed maximum activity in forest soil and minimum in cropfield soil.Analysis of microbial metabolic respiratory activity indicated a relatively greater respiratory loss of CO2-C per unit microbial biomass in cropfield and grassland than in forest soil.Considering the importance of microbial components in soil,it is concluded that land use in different ways will lead to the reduction of biological stabilty of soil.
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| 关 键 词： | 土壤 微生物 中国西南地区 岩溶地区 |
| 收稿时间： | 2006-02-14 |
A comparative study on the microbiological characteristics of soils under different land— use conditions from karst areas of southwest China |
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| Gangcai Chen,Lu Gan,Shilu Wang,Yangou Wu,Guojiang Wan. A comparative study on the microbiological characteristics of soils under different land— use conditions from karst areas of southwest China[J]. Chinese Journal of Geochemistry, 2001, 20(1): 52-58. DOI: 10.1007/BF03166849 |
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| Authors: | Gangcai Chen Lu Gan Shilu Wang Yangou Wu Guojiang Wan |
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| Affiliation: | (1) Institute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China; |
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| Abstract: | Microbiological and physical-chemical characteristics of subtropical forest, grassland and cropfield soils from the karst areas of Southwest China were investigated. The study revealed that the conversion of natural forest to other forms of land would lead to a reduction in soil organic C(26.2%–35.3%), total N(37.2%–55.8%), total P(32.9%–43.6%), microbial biomass C(35.4%–49.1%), N(37.2%–55.8%), and P(25.8%–41.9%). Comparative analysis of microbial activity in terms of basal soil respiration showed maximum activity in forest soil and minimum in cropfield soil. Analysis of microbial metabolic respiratory activity indicated a relatively greater respiratory loss of CO2-C per unit microbial biomass in cropfield and grassland than in forest soil. Considering the importance of microbial components in soil, it is concluded that land use in different ways will lead to the reduction of biological stability of soil. |
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