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2016年6月 的存档

Soil Ecology Group passed the 4-yr academic evaluation

2016年6月20日 评论已被关闭

On 13th June, Soil Ecology Group (SEG) passed the 4-yr academic evaluation.

After Professor Yang leading SEG in 2012, SEG  faced the first academic evaluation. On 13th June, Professor Yang given academic commitee a presentation to introduce achivement, weakness and future plan of SEG. During these 4 years, SEG continually focus on soil diversity, and its relationship to nutrient cycling, trophic cascade effect, interaction betwen plant and soil organism, and conservation. Finally, published 19 paper with first and (or) corresponding author including Functional Ecology, Global Change Biology, Soil Biology & Biochemistry, Plant and Soil. And also other 12 papers cooperated with other research groups. In future, SEG will plan to extend research to Southeast Asia and do more contribution to soil diversity research in tropical Asia. As commitee criticised, we should also think about to continually focus deep on specific important scientific questions.

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Hongyan Hu and Zhipeng Li passed their graduation thesis defense

2016年6月20日 评论已被关闭

On the 1th June,  two master students in soil ecology group, Hongyan Hu and Zhipeng Li passed their graduation thesis defense.

Insect herbivory is important process in ecological system. It’s not only affect plant growing and community composition, but also affect ecosystem productivity and nutrient cycling within ecosystems. As forest fragmentation is intensifying, the effect of fragmentation on ecological system process is becoming a hot issue of ecological research in recent years. In order to understand how forest fragmentation effect on insect herbivory, Hongyan Hu surveyed insect herbivory of dominant tree species in four rain forest fragments and eleven evergreen broad-leaved forest fragments and continuous forest in Nabanhe National Reserve of Xishuangbanna. Her results showed that forest fragmentation could cause mean herbivory frequency of dominant species decreased significantly, but had no significant effect on mean herbivory of them. Forest type and season could influence insect herbivory of dominant species in forest fragments significantly, but fragment area, tree diversity and leaf characteristics were not correlated with insect herbivory of dominant species.

DSC_0888Photo of Hongyan Hu(胡鸿雁) with her supervisor Zheng Zheng(郑征)

Soil nematodes play a key role in many important ecological processes such as nutrients cycling and vegetation succession. However, it needs still further studies to explore the relative importance and characteristic scale of niche processes and neutral processes on soil nematodes community assemblage, especially for tropical seasonal rainforests. Through high intensively collecting spatial information about topography, soil properties, litter fall, vegetation and nematodes community structure, Zhipeng Li found that biotic and abiotic environmental heterogeneities are important for nematodes community assemblage in tropical seasonal rainforests. It might have important influence on ecosystem function and maintenance of aboveground biodiversity.

DSC_0882Photo of Zhipeng Li(李志鹏) with his supervisor Xiaodong Yang(杨效东)

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Professors Zhihong Xu and Chris Johnson visited Soil Ecology Group

2016年6月5日 评论已被关闭

Invited by Professor Yang (PI), Professors Zhihong Xu and Chris Johnson visited Soil Ecology Group (SEG) On 26th-29th May, 2016. Professor Zhihong Xu is the director of Environmental future research center in Griffith University, Australia, and chief editor of Journal of Soils and Sediments. Chris E. Johnson is the professor in Syracuse University, USA, and editor of Journal of Soils and Sediments.

On 27th May, in the International Academic Hall, Professor Zhihong Xu give us a presentation with title of Tipping points of non-linear tree growth responses to climate change in different forest ecosystems from subtropical to boreal regions.  Chris E. Johnson give us a presentation with title of Soil Carbon stocks in a temporate hardwood forest: Climate changes effects and recover from chronic acidification.

On 28th May, Professor Zhihong Xu and Chris Johnson visitied the 20 ha. forest dynamic plot in bubeng.

Professor Zhihong Xu and Chris Johnson are very interesting in the ecological process of nutrients cycling in tropical rainforest and discussed with SEG for the potential possibility for cooperation in future.

2 in XTBG

1 in field

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