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Impact of city historical management on soil organic carbon stocks in Paris (France)
Journal of Soils and Sediments ( IF 3.6 ) Pub Date : 2021-01-09 , DOI: 10.1007/s11368-020-02869-9
Aurélie Cambou , Nicolas P.A. Saby , Gilles Hunault , François Nold , Patrice Cannavo , Christophe Schwartz , Laure Vidal-Beaudet

Purpose

Assessments of urban soil organic carbon stock (SOCS) are scant because citywide data are scarce. Moreover, we do not know which factors mostly explain SOCS spatial and temporal variations in urban open soils.

Methods

To fill these knowledge gaps, the present study focused on Paris (France): two periods (1993–2007 and 2008–2016) were compared to better understand SOCS changes at 0–30 cm depth. The effects of anthropic factors (land use, management intensity, cover type, site age and size, city district, and indirectly, resource material used for the site establishment) and soil properties (e.g., soil nutrient contents) on SOCS were studied over the more recent period (2008–2016) on 810 soil samples.

Results

The changes in green space management methods between both periods resulted in an additional storage of + 43.5 Gg SOC in Paris open soils in 2008–2016 compared to 1993–2007. During 2008–2016, SOCS was still influenced by city history and particularly by the type of resource material used for landscaping, which has changed since the 1950s. SOCS differed significantly among city districts, which represent a combination of all studied anthropic factors: each district has its own history (i.e., soil resource material, green space age), specific number and size of green spaces, current management methods, and plant cover types. Paris green space SOCS was also influenced by soil nitrogen, sand, and magnesium contents as well as pH.

Conclusions

Modifications of local landscape management methods are a main driver of SOCS changes. Moreover, citywide SOCS distribution tends to depend on city history.



中文翻译:

城市历史管理对巴黎(法国)土壤有机碳储量的影响

目的

由于缺乏全市范围的数据,因此对城市土壤有机碳储量(SOCS)的评估很少。而且,我们不知道哪些因素主要解释了城市裸露土壤中SOCS的时空变化。

方法

为了填补这些知识空白,本研究主要针对巴黎(法国):比较了两个时期(1993-2007年和2008-2016年),以更好地理解SOCS在0-30 cm深度的变化。研究了人为因素(土地利用,管理强度,覆盖类型,场所年龄和规模,市区,以及间接地,用于场所建立的资源材料)和土壤性质(例如土壤养分含量)对整个SOCS的影响。最近时期(2008-2016年)的810个土壤样品。

结果

两个时期之间绿地管理方法的变化导致与1993-2007年相比,2008-2016年在巴黎开放土壤中增加了+ 43.5 Gg SOC的存储。在2008-2016年期间,SOCS仍然受到城市历史的影响,尤其是受到美化环境的资源材料类型的影响,自1950年代以来,这种材料发生了变化。不同城市地区的SOCS差异很大,代表了所有研究的人类因素的结合:每个地区都有其自身的历史(即土壤资源材料,绿地年龄),特定的绿地数量和大小,当前的管理方法以及植物覆盖率类型。巴黎绿地的SOCS还受到土壤氮,沙和镁含量以及pH值的影响。

结论

修改本地景观管理方法是SOCS变更的主要驱动力。而且,整个城市的SOCS分布往往取决于城市的历史。

更新日期:2021-01-10
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