Changes in soil carbon pools and microbial biomass from urban land development and subsequent post-development soil rehabilitation

Chen, Yujuan; Day, Susan D.; Wick, Abbey F.; Strahm, Brian D.; Wiseman, P. Eric; Daniels, W. Lee

doi:10.1016/j.soilbio.2013.06.022

Cited by 66 publications

(38 citation statements)

References 61 publications

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“…Little research is available on the effects of land conversion on grassland SOC in California. Typical construction practices have been found to degrade soil by surface soil removal and subsoil compaction, leading to loss of total soil carbon in the top 10 cm by approximately 35 % (Chen et al 2013). However, outcomes for SOC after grassland conversion to urban land uses are uncertain.…”

Section: Discussionmentioning

confidence: 99%

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Integrated climate and land use change scenarios for California rangeland ecosystem services: wildlife habitat, soil carbon, and water supply

Byrd

Flint

Alvarez³

et al. 2015

Landscape Ecol

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Context In addition to biodiversity conservation, California rangelands generate multiple ecosystem services including livestock production, drinking and irrigation water, and carbon sequestration. California rangeland ecosystems have experienced substantial conversion to residential land use and more intensive agriculture. Objectives To understand the potential impacts to rangeland ecosystem services, we developed six spatially explicit (250 m) climate/land use change scenarios for the Central Valley of California and surrounding foothills consistent with three Intergovernmental Panel on Climate Change emission scenario narratives.Methods We quantified baseline and projected change in wildlife habitat, soil organic carbon (SOC), and water supply (recharge and runoff). For six case study watersheds we quantified the interactions of future development and changing climate on recharge, runoff and streamflow, and precipitation thresholds where dominant watershed hydrological processes shift through analysis of covariance. Results The scenarios show that across the region, habitat loss is expected to occur predominantly in grasslands, primarily due to future development (up to a 37 % decline by 2100), however habitat loss in priority conservation errors will likely be due to cropland and hay/pasture expansion (up to 40 % by 2100). Grasslands in the region contain approximately 100 teragrams SOC in the top 20 cm, and up to 39 % of this SOC is subject to conversion by 2100. In dryer periods recharge processes typically dominate runoff. Future development lowers the precipitation value at 123Landscape Ecol (2015) 30:729-750 DOI 10.1007 which recharge processes dominate runoff, and combined with periods of drought, reduces the opportunity for recharge, especially on deep soils. Conclusion Results support the need for climatesmart land use planning that takes recharge areas into account, which will provide opportunities for water storage in dry years. Given projections for agriculture, more modeling is needed on feedbacks between agricultural expansion on rangelands and water supply.

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Section: Discussionmentioning

confidence: 99%

“…Conversion of rangelands to cropland or urban lands can release large quantities of carbon (Lal 2002;Potthoff et al 2005;Chen et al 2013). Annual rates of carbon sequestration in rangelands are low compared to other ecosystems, rarely exceeding 0.10 Mg C ha -1 year -1 (Follett et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Integrated climate and land use change scenarios for California rangeland ecosystem services: wildlife habitat, soil carbon, and water supply

Byrd

Flint

Alvarez³

et al. 2015

Landscape Ecol

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“…The intensified human disturbances together with the habitat loss and isolation threatened the stability of the urban ecosystem functions (e.g., C sequestration) as well as the ecosystem structure (e.g., native species abundances) in Urumqi [59]. Because the city is located in an arid climate, and because the ecosystem is relatively fragile compared to other eco-zones [62], rapid urbanization in this area may have more serious environmental/ecological consequences than in other areas.…”

Section: Discussionmentioning

confidence: 99%

Urban Land-Cover Change and Its Impact on the Ecosystem Carbon Storage in a Dryland City

Yan

Zhang

et al. 2015

Remote Sensing

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Lack of research into the complexity in urban land conversion, and paucity of observational data of soil organic carbon (SOC) beneath impervious surface area (ISA) limit our understanding of the urbanization effects on carbon (C) pools in dryland cities. Employing Landsat TM images acquired in 1990 and 2010, a hybrid classification method consisting of Linear Spectral Mixture Analysis and decision tree classification was applied to retrieve the land cover (water, ISA, greenspace, cropland, and remnant desert) of the largest dryland city in China-Urumqi. Based on vegetation carbon (VEGC) and SOC density data determined through field observations and literature reviews, we developed Urumqi's C pool maps in 1990 and 2010, and assessed the urbanization impacts on ecosystem C. Our results showed that ISA tripled from 1990 to 2010 displacing remnant desert and cropland. The urban landscape, especially the greenspaces, became obviously fragmented. In 2010, more than 95% of the urban ecosystem C was SOC, 48% of which under the ISA. The city lost 19% of C stock from 1990 to 2010. About 82% of the ecosystem C loss was caused by the conversion of remnant desert and cropland into ISA, mainly in the northern city.

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“…The increases in AI and LSI indicated intensified interactions between humans and the ecological space. This suggests that, under the arid climate and relatively fragile ecosystems, rapid urbanization causes the urban ecological environment to become more sensitive to human disturbances in arid regions compared to other eco-zones [52]. In this process, the incorporating greening into the process of urbanization plays a vital role in maintaining ecological service, improving the living environment, and preventing erosion.…”

Section: Increasing Harmonization Of Urbanization and Greening In Arimentioning

confidence: 99%

Urban Land-Cover Dynamics in Arid China Based on High-Resolution Urban Land Mapping Products

Pan

Zhang

et al. 2017

Remote Sensing

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Abstract:Rapid urbanization has occurred in northwestern China, threatening the sustainability of its fragile dryland ecosystems. A lack of precise urban land-cover information has limited our understanding on the urbanization in the dryland. Here, we examined urban land-cover changes from 2000 to 2014 in 21 major cities that comprise over 50% of the developed land in arid China, using Landsat Enhanced Thematic Mapper Plus and Operational Land Imager data, and a hybrid classification method. The 15-m resolution urban land-cover products (including impervious surfaces, vegetation, bare soil, and water bodies) had an overall accuracy of 90.37%. Based on these new land use products, we found the urbanization in arid China was characterized by the dramatic expansion of impervious surface (+13.23%) and reduction of bare soil (−13.41%), while the proportions of vegetation (+0.27%) and water (−0.10%) remained stable. The observed dynamic equilibrium of vegetated ratio implies an increasing harmonization of urbanization and greening, which was particularly important for the sustainability of fragile urban ecosystems in arid regions. From an economic perspective, gross domestic product and population were significantly correlated with impervious surfaces, and oasis cities displayed a stronger ability to attract new residents than desert cities.

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Changes in soil carbon pools and microbial biomass from urban land development and subsequent post-development soil rehabilitation

Cited by 66 publications

References 61 publications

Integrated climate and land use change scenarios for California rangeland ecosystem services: wildlife habitat, soil carbon, and water supply

Integrated climate and land use change scenarios for California rangeland ecosystem services: wildlife habitat, soil carbon, and water supply

Urban Land-Cover Change and Its Impact on the Ecosystem Carbon Storage in a Dryland City

Urban Land-Cover Dynamics in Arid China Based on High-Resolution Urban Land Mapping Products

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