DOI: 10.1016/j.foreco.2017.07.022
Scopus记录号: 2-s2.0-85025113808
论文题名: Temporal variability in soil moisture after thinning in semi-arid Picea crassifolia plantations in northwestern China
作者: Zhu X. ; He Z.-B. ; Du J. ; Chen L.-F. ; Lin P.-F. ; Li J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 401 起始页码: 273
结束页码: 285
语种: 英语
英文关键词: Picea crassifolia plantations
; Qilian Mountains
; Soil hydrological response
; Soil moisture
; Spatio-temporal dynamics
Scopus关键词: Ecology
; Ecosystems
; Forestry
; Moisture
; Moisture control
; Precipitation (meteorology)
; Soil moisture
; Antecedent soil moisture
; Picea crassifolia forests
; Picea crassifolia plantations
; Precipitation patterns
; Precipitation properties
; Qilian mountains
; Soil hydrological
; Spatio-temporal dynamics
; Soils
; Picea crassifolia
英文摘要: Soil moisture controls the functioning of semi-arid ecosystems. The response of soil moisture to forest stand thinning determines planting density and sustainability of forest development. However, consequences of stand thinning are poorly known in semi-arid ecosystems of the Qilian Mountains of China. We investigated long-term effects of three thinning intensities in Picea crassifolia plantations on soil hydrological responses and soil moisture dynamics at 10, 20, 40, 60, and 80 cm depths, and compared them to those of a natural Picea crassifolia forest. Results revealed that soil hydrological response may be temporarily modified by thinning according to changes in canopy structure, precipitation properties, and antecedent soil moisture conditions. Soil moisture in natural forest rapidly infiltrated into deep soil, which greatly improved the efficiency of precipitation use. Thinning significantly increased the capacity for soil infiltration, and moderate thinning intensity may be conducive to deep soil-water recharge. Soil moisture content changed drastically after thinning, with a significant decrease near-surface (10 cm), and a significant increase in sub-surface (60 and 80 cm) soil. High planting density was the main cause of severe soil moisture deficits in the long-term, but it could be mitigated by 20–40% thinning (∼3139 trees ha−1). Changes in precipitation patterns that include larger but less frequent rainfall events during the growing season will benefit the growth of vegetation planted at high densities in this semi-arid region. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64187
Appears in Collections: 影响、适应和脆弱性
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作者单位: Linze Inland River Basin Research Station, Chinese Ecosystem Research Network, Key Laboratory of Eco-hydrology of Inland River Basin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhu X.,He Z.-B.,Du J.,et al. Temporal variability in soil moisture after thinning in semi-arid Picea crassifolia plantations in northwestern China[J]. Forest Ecology and Management,2017-01-01,401