DOI: 10.1016/j.foreco.2014.01.043
Scopus记录号: 2-s2.0-84896827718
论文题名: Carbon dynamics after afforestation of semiarid shrublands: Implications of site preparation techniques
作者: Garcia-Franco N. ; Wiesmeier M. ; Goberna M. ; Martínez-Mena M. ; Albaladejo J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 319 起始页码: 107
结束页码: 115
语种: 英语
英文关键词: Carbon sequestration
; Climate change
; Organic carbon pools
; Organic matter stabilization
; Soil fertility
; Terracing
Scopus关键词: Carbon sequestration
; Long-term experiments
; Organic carbon pools
; Particulate organic matters
; Semi-arid ecosystems
; Soil fertility
; Stabilization mechanisms
; Terracing
; Biological materials
; Climate change
; Ecosystems
; Lakes
; Reforestation
; Soils
; Stabilization
; afforestation
; carbon cycle
; carbon sequestration
; climate change
; disturbance
; native species
; semiarid region
; shrubland
; soil amendment
; soil fertility
; soil organic matter
; soil property
; soil stabilization
; terracing
; Spain
英文摘要: Climate change is a potential threat to soil organic carbon (SOC) in semiarid ecosystems. Several studies advocated afforestation as an important way to achieve soil C accumulation, but few deal with the mechanisms of C stabilization. The knowledge of these mechanisms is a key aspect in the preservation of SOC in the face of climate change. In a long-term experiment in southeast Spain, we analyzed the effect on C sequestration and stabilization mechanisms of two Pinus halepensis afforestation treatments: (a) terracing (T) and (b) terracing with soil amendment (AT). Twenty years after installing the pine plantations, changes were measured in: (a) chemical, physical, and biological soil properties, (b) ecosystem C stocks, and (c) three functional SOC pools: particulate organic matter (POM), sand and stable aggregates (S+A), and silt plus clay (S+C). The results show that the afforestation treatment had a distinct impact on soil properties. Compared with the adjacent native shrubland, the AT treatment led to improved soil fertility, while the T treatment had a negative impact on soil properties. In turn, AT led to a C gain in the ecosystem of 1.3kgCm-2, while with T there was a decline of 0.60kgCm-2 over 20years. This decline was due to the impact of the terracing work. The potential ecosystem C sequestration capacity of the afforestation was 160 and 65gCm-2year-1 in AT and T, respectively. Focusing on sequestration in the mineral soil, the average annual sequestration rate was 28gCm-2year-1 in AT and 17gCm-2year-1 in T. In relation to the functional SOC pools, the C sequestered showed the following distribution: 30% POM, 46% (S+A), and 24% (S+C). The results show that C sequestration, through afforestation of semiarid areas, can be increased by using suitable afforestation techniques. Site preparation involving large soil disturbance is not recommended. Twenty years after planting, the potential capacity for C sequestration of the afforested ecosystems is far from being saturated and they will continue sequestering C as they reach maturity. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66026
Appears in Collections: 影响、适应和脆弱性
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作者单位: Soil and Water Conservation Department, CEBAS-CSIC (Spanish Research Council), Campus de Espinardo, P.O. Box 164, 30100 Murcia, Spain; Lehrstuhl für Bodenkunde, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Technische Universität München, D-85350 Freising-Weihenstephan, Germany
Recommended Citation:
Garcia-Franco N.,Wiesmeier M.,Goberna M.,et al. Carbon dynamics after afforestation of semiarid shrublands: Implications of site preparation techniques[J]. Forest Ecology and Management,2014-01-01,319