نتایج جستجو برای: plantation

تعداد نتایج: 7035  

Journal: :Scientific reports 2015
Yuejiao Li Didi Sun Dandan Li Zhenfeng Xu Chunzhang Zhao Honghui Lin Qing Liu

Ectomycorrhiza (ECM) plays an important role in plant nitrogen (N) nutrition and regulates plant responded to climate warming. We conducted a field experiment in a natural forest and a plantation in the eastern Tibetan Plateau to estimate the warming effects of open-top chambers (OTC) on ECM and N nutrition of Picea asperata seedlings. Four-year warming significantly decreased ECM colonization,...

2012
Namrata Thapa

The tea plantation sector has been considered to be a major source of livelihood and employment for the population of the regional economies. Structural changes in this sector have led to the emergence of labour categories such as permanent estate workers, casual estate workers and self employed small tea growers. Several studies have attempted to understand the human development status of the ...

Aboulghasem Yousefi Leila Darvishi

Increasing urbanisation and industrialisation have led to a dramatic reduction in forest area, and now only culturally protected remnants of natural forests and some new plantations remain in most areas of the north of Iran. To investigate the status of the chemical and physical characteristics of soil under these remnant forests and assess the possible impacts of reforestation on soil properti...

Journal: :Banko Janakari 2019

Journal: :Scientific American 1901

2015
Hongfang Lu Fangyan Fu Hao Li Daniel E. Campbell Hai Ren

The bio-thermodynamic structures of a mixed native species plantation, a conifer plantation and an Acacia mangium plantation in Southern China were quantified over a period of 15 years based on eco-exergy methods. The efficiencies of structural development and maintenance were quantified through an integrated application of eco-exergy and emergy methods. The results showed that the storage of e...

2008
MIN ZHANG XIAN-HUI FU WEN-TING FENG XIAOMING ZOU

Abstract: Rubber tree (Hevea brasiliensis) plantation is a major land use practiced in Xishuangbanna of south-western China. Effects of rubber plantation (RP) and tea-rubber intercropping (TRI) systems on soil organic carbon pools were evaluated by recording changes in soil organic carbon in an age sequence of 12-, 20-, 26-, and 40-year old plantations. Labile organic carbon (LOC) increased in ...

2013
Hely Häggman Alan Raybould Aluizio Borem Thomas Fox Levis Handley Magnus Hertzberg Meng-Zu Lu Philip Macdonald Taichi Oguchi Giancarlo Pasquali Les Pearson Gary Peter Hector Quemada Armand Séguin Kylie Tattersall Eugênio Ulian Christian Walter Morven McLean

Forests are vital to the world's ecological, social, cultural and economic well-being yet sustainable provision of goods and services from forests is increasingly challenged by pressures such as growing demand for wood and other forest products, land conversion and degradation, and climate change. Intensively managed, highly productive forestry incorporating the most advanced methods for tree b...

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