Response of Soil Physicochemical Properties and Microbial Activity on Land-use Conversion from Paddy Field to Orchard Farm

Yang Dongwei; Zhang Mingkui; Liu Qianqian; Zhang Pengqi; Li Xue; Dong Jing; Huang Xiao

doi:10.13961/j.cnki.stbctb.2019.02.008

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Response of Soil Physicochemical Properties and Microbial Activity on Land-use Conversion from Paddy Field to Orchard Farm

- Response of Soil Physicochemical Properties and Microbial Activity on Land-use Conversion from Paddy Field to Orchard Farm
- Bulletin of Soiland Water Conservation Vol. 39, Issue 2, Pages: 48-55(2019)
- 作者机构：
  
  1. 浙江大学环境与资源学院,浙江,杭州,310058
  2. 河南师范大学旅游学院,河南,新乡,453007
  3. 广西大学商学院,广西,南宁,530004
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.02.008
  CLC： S154
- Published：2019
- 稿件说明：
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Yang Dongwei, Zhang Mingkui, Liu Qianqian, et al. Response of Soil Physicochemical Properties and Microbial Activity on Land-use Conversion from Paddy Field to Orchard Farm[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 48-55.
DOI：

Yang Dongwei, Zhang Mingkui, Liu Qianqian, et al. Response of Soil Physicochemical Properties and Microbial Activity on Land-use Conversion from Paddy Field to Orchard Farm[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 48-55. DOI： 10.13961/j.cnki.stbctb.2019.02.008.

摘要

[目的]探讨土壤微生物特性及环境因子对水田改果园的动态响应规律，为进一步研究土地利用变化对土壤生态环境的影响，预测水田改果园后土壤质量的长期变化趋势提供科学依据。[方法]在浙江省范围内选择1个代表性的水田改果园土壤系列，采用后切时间序列法，分析水田改果园后土壤理化性质、土壤微生物生物量及酶活性等指标的动态响应规律。[结果]水田改果园后，土壤含水率、>0.25 mm水稳定性团聚体、pH值、有机质、盐基饱和度、全氮、碱解氮含量显著（p<0.01）下降，全钾、有效钾、全磷和有效磷含量分别增加了21.9%，54.7%，42.0%和6.65倍，并且这些指标都与植树年限呈极显著（p<0.01）相关。改果园后，土壤微生物生物量碳和氮平均含量分别下降了74.4%和73.3%，土壤脲酶和酸性磷酸酶活性平均值分别增加了40.0%和41.8%，土壤过氧化氢酶活性平均值下降69.3%，并都与植树年限呈极显著相关（p<0.01）。[结论]水田改果园后土壤环境因子发生阶段性变化，且土地利用方式的影响要大于利用年限的影响。水田改果园后土壤综合肥力下降，并对生态环境和土地可持续利用带来不利影响。

Abstract

[Objective] The dynamic response of soil microbial characteristics and environmental factors to the change of paddy fields into orchards was discussed in order to provide a scientific basis for further study of the impact of land use change on soil ecological environment and prediction of the long-term change trend of soil quality after the change of paddy fields to orchards.[Methods] One representative soil series of land-use change from paddy to orchard were chosen in Zhejiang Province

furthermore

the law of dynamic response of soil physicochemical properties

enzyme activity and soil microbial biomass to land-use change was analyzed using the post-cut time series method.[Results] Soil moisture

> 0.25 mm water stable aggregate

pH value

organic matter

base saturation

total nitrogen and alkali-hydrolyzable nitrogen fell down significantly(p < 0.01)

however

total phosphorus

available phosphorus and available potassium increased by 21.9%

54.7%

42.0% and 6.65 times

respectively

and these indexes were correlated with years of planting trees significantly(p < 0.01). After the land-use change

the average of soil microbial biomass carbon and nitrogen decreased by 74.4% and 73.3%

respectively. The average of soil urease and acid phosphatase activity increased by 40.0% and 41.8%

respectively. However

the mean value of soil catalase activity decreased by 69.3%

and they were significantly(p < 0.01) correlated with the time of planting trees.[Conclusion] After the land-use conversion from the paddy field to orchard farm

soil environmental factors changed periodically

and the influence of land-use pattern was greater than that of land-use history. Moreover

soil comprehensive fertility decreased

and the ecological environment and sustainability of land use were adversely affected.

关键词

Keywords

references

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