Converting forests into rubber plantations weakened the soil CH4 sink in tropical uplands
Lang, Rong1,2,3; Goldberg, Stefanie1,3; Blagodatsky, Sergey2; Piepho, Hans-Peter4; Harrison, Rhett D.5; Xu, Jianchu3; Cadisch, Georg2
Corresponding AuthorLang, Rong( ; Goldberg, Stefanie( ; Blagodatsky, Sergey(
AbstractLarge-scale conversion of natural forest to rubber plantations has taken place for decades in Southeast Asia, help to make it a deforestation hot spot. Besides negative changes in biodiversity, ecosystem water, and carbon budgets, converting forests to plantations often reduced CH4 uptake by soils. The latter process, which might be partly responsible for resumed increase in the growth rate of CH4 atmospheric concentrations since 2006, has not been adequately investigated. We measured soil surface CH4 fluxes during 2014 and 2015 in natural forests and rubber plantations of different age and soil textures in Xishuangbanna, Southwest China-a representative area for this type of land-use change. Natural forest soils were stronger CH4 sinks than rubber soils, with annual CH4 fluxes of -2.41 +/- 0.28 and -1.01 +/- 0.23 kg C ha(-1) yr(-1), respectively. Water-filled pore space was the main factor explaining the differences between natural forests and rubber plantations, even reverting rubber soils temporarily from CH4 sink into a methane source during the rainy season in older plantations. Soil nitrate content was often lower under rubber plantations. Added as a model covariate, this factor improved explanation power of the CH4 flux-water-filled pore space regression. Although soils under rubber plantation were more clayey than soils under natural forest, this was not the decisive factor driving higher soil moisture and lower CH4 uptake in rubber soils. Thus, the conversion of forests into rubber plantations exerts a negative impact on the CH4 balance in the tropics and likely contributes to global climate.
Keyworddeforestation land-use change methane rubber plantation soil moisture soil texture tropics
Indexed BySCI
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000484597600001
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLang, Rong; Goldberg, Stefanie; Blagodatsky, Sergey
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Univ Hohenheim, Hans Ruthenberg Inst, Inst Agr Sci Trop, D-70593 Stuttgart, Germany
3.World Agroforestry ICRAF, Kunming 650201, Yunnan, Peoples R China
4.Univ Hohenheim, Inst Crop Sci, Biostat Unit, D-70593 Stuttgart, Germany
5.World Agroforestry, 13 Elm Rd, Woodlands 10101, Lusaka, Zambia
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Lang, Rong,Goldberg, Stefanie,Blagodatsky, Sergey,et al. Converting forests into rubber plantations weakened the soil CH4 sink in tropical uplands[J]. LAND DEGRADATION & DEVELOPMENT,2019:12.
APA Lang, Rong.,Goldberg, Stefanie.,Blagodatsky, Sergey.,Piepho, Hans-Peter.,Harrison, Rhett D..,...&Cadisch, Georg.(2019).Converting forests into rubber plantations weakened the soil CH4 sink in tropical uplands.LAND DEGRADATION & DEVELOPMENT,12.
MLA Lang, Rong,et al."Converting forests into rubber plantations weakened the soil CH4 sink in tropical uplands".LAND DEGRADATION & DEVELOPMENT (2019):12.
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