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Greater diurnal temperature difference, an overlooked but important climatic driver of rubber yield
Yu, Haiying1,2; Hammond, Jim1,2; Ling, Shenghai3; Zhou, Shuangxi3; Mortimer, Peter Edward1,2; Xu, Jianchu1,2; Yu,HY (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Biodivers & Biogeog,Kunming 650201,Peoples R China.; yuhaiying@mail.kib.ac.cn; jxu@mail.kib.ac.cn
2014-12-01
Source PublicationINDUSTRIAL CROPS AND PRODUCTS
ISSN0926-6690
Volume62Issue:4Pages:14-21
Contribution Rank第六
AbstractThe increase of rubber demand has led to rapid expansion of rubber plantations from optimal environments in the humid tropics of Southeast Asia into suboptimal environments in montane mainland Southeast Asia. Nevertheless, rubber yields can be surprisingly high in sub-optimal environments. This paper investigates climatic factors which contribute to the higher than expected rubber yields in a suboptimal environment in Jinghong, Yunnan, Southwest China. Two mathematical analysis methods were used to relate climate to rubber yield and dry matter content: partial least square regression and classification and regression tree models were used. Greater diurnal temperature difference was found to increase dry rubber yield, and has been previously overlooked as an explanatory factor. Average temperatures below 25.7 degrees C, and more sunshine hours in the day before tapping, were also found to significantly improve dry rubber yield, although more sunshine hours during the month prior to tapping were found to reduce rubber yield. Lower relative humidity was found to increase dry rubber content of latex and increase yield. Greater diurnal temperature difference and more sunshine hours in a day before tapping facilitate photosynthesis and rubber formation. Lower relative humidity reduces the water content in the latex, thus increasing dry rubber content of the latex.
KeywordDry Rubber Yield Dry Rubber Content Average Temperature Diurnal Temperature Difference Sunshine Hours Relative Humidity
Subject AreaAgricultural Engineering ; Agronomy
DOI10.1016/j.indcrop.2014.08.001
Indexed BySCI
Language英语
WOS Research AreaAgriculture
WOS SubjectAgricultural Engineering ; Agronomy
WOS IDWOS:000345468800003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/18491
Collection资源植物与生物技术所级重点实验室
Corresponding AuthorYu,HY (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Biodivers & Biogeog,Kunming 650201,Peoples R China.; yuhaiying@mail.kib.ac.cn; jxu@mail.kib.ac.cn
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Peoples R China
2.World Agroforestry Ctr, East Cent Asia 650201, Kunming, Peoples R China
3.Xishuangbanna Meteorol Bur, Jinghong, Peoples R China
Recommended Citation
GB/T 7714
Yu, Haiying,Hammond, Jim,Ling, Shenghai,et al. Greater diurnal temperature difference, an overlooked but important climatic driver of rubber yield[J]. INDUSTRIAL CROPS AND PRODUCTS,2014,62(4):14-21.
APA Yu, Haiying.,Hammond, Jim.,Ling, Shenghai.,Zhou, Shuangxi.,Mortimer, Peter Edward.,...&jxu@mail.kib.ac.cn.(2014).Greater diurnal temperature difference, an overlooked but important climatic driver of rubber yield.INDUSTRIAL CROPS AND PRODUCTS,62(4),14-21.
MLA Yu, Haiying,et al."Greater diurnal temperature difference, an overlooked but important climatic driver of rubber yield".INDUSTRIAL CROPS AND PRODUCTS 62.4(2014):14-21.
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