DOI: 10.1016/j.foreco.2017.04.032
Scopus记录号: 2-s2.0-85018954457
论文题名: Tree soil water uptake and transpiration in mono-cultural and jungle rubber stands of Sumatra
作者: Hardanto A. ; Röll A. ; Hendrayanto ; Hölscher D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 397 起始页码: 67
结束页码: 77
语种: 英语
英文关键词: Competition
; Ecohydrology
; Hevea brasiliensis
; Poly-cultures
; Resource partitioning
; Sap flux
; Stable isotopes
Scopus关键词: Competition
; Isotopes
; Rubber
; Rubber plantations
; Soil moisture
; Soils
; Transpiration
; Eco-hydrology
; Hevea brasiliensis
; Poly cultures
; Resource partitioning
; Sap flux
; Stable isotopes
; Forestry
; competition (ecology)
; cultivation
; deciduous tree
; isotopic analysis
; monoculture
; native species
; plantation
; polyculture
; sap flow
; soil surface
; soil water
; stable isotope
; transpiration
; water uptake
; Greater Sunda Islands
; Sumatra
; Sunda Isles
; Hevea brasiliensis
英文摘要: Rubber tree mono-cultural plantations are expanding. Also, there is an increasing search for ‘green’ rubber production. Rubber tree cultivation in stands with admixed, spontaneously established native trees, referred to as jungle rubber, has a long tradition on Sumatra. For rubber tree monocultures on mainland Asia, concerns have been raised because of potentially very high tree transpiration rates. The objectives of our study were to analyze tree water use rates and tree soil water uptake depths in mono-cultural and jungle rubber stands with a focus on the role of tree diameter. Sap flux measurements suggest similar water use rates for rubber trees in the two cultivation systems. Stand-level transpiration in jungle rubber was 27% higher than in rubber monocultures, which was related to higher stand densities in jungle rubber stands. A water stable isotope (δ18O and δD) approach suggests different soil water uptake depths for the rubber trees in the two cultivation systems. In a relatively dry period, the main tree water uptake in the monoculture was relatively close to the soil surface, whereas rubber trees in jungle rubber stands mainly took up water from deeper soil strata; here the native trees had their main uptake depth relatively close to the soil surface. This pattern indicates plasticity in rubber tree water uptake and points to competitive displacement. Across rubber trees in both cultivation systems and also among the native trees, there was a clear relationship between tree diameter and soil water uptake depth: bigger trees tended to take up soil water closer to the soil surface. Diameter and density regulation by thinning of big native trees thus appears as a potential management option for influencing water uptake in jungle rubber stands in favor of rubber trees. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64305
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of Goettingen, Tropical Silviculture and Forest Ecology, Germany; Jenderal Soedirman University, Faculty of Agriculture, Indonesia; Bogor Agricultural University, Faculty of Forestry, Indonesia
Recommended Citation:
Hardanto A.,Röll A.,Hendrayanto,et al. Tree soil water uptake and transpiration in mono-cultural and jungle rubber stands of Sumatra[J]. Forest Ecology and Management,2017-01-01,397