نتایج جستجو برای: plantations

تعداد نتایج: 7047  

2007
Argentina Nuñez Martín Andrés

Question: What are the effects of fire in native shrubland communities and in pine plantations established in these shrublands? Location: Northern Patagonia, Argentina. Methods: We surveyed four sites in Chall–Huaco valley, located in northwest Patagonia. Each site was a vegetation mosaic composed of an unburned Pinus ponderosa plantation, a plantation burned in 1996, and an unburned matorral a...

2006
James Donahey Marcia Snyder Ann Russell Lisa Schulte

With the recent implementation of the Kyoto Protocol (Kyoto 1997), carbon credits may afford a new economic market associated with forested landscapes (IPCC 2000). To assess the potential for carbon sequestration in an important part of those forested landscapes, tree plantations, it is not only important to determine the extent to which tree species differ in carbon storage, but also to know t...

2015
Xiaoqiong Li Duo Ye Hongwen Liang Hongguang Zhu Lin Qin Yuling Zhu Yuanguang Wen Dafeng Hui

Plantations play an important role in carbon sequestration and the global carbon cycle. However, there is a dilemma in that most plantations are managed on short rotations, and the carbon sequestration capacities of these short-rotation plantations remain understudied. Eucalyptus has been widely planted in the tropics and subtropics due to its rapid growth, high adaptability, and large economic...

2014
Youzhi Li Xinsheng Chen Yonghong Xie Xu Li Feng Li Zhiyong Hou

This study evaluated the effects of young poplar plantations on understory plant diversity in the Dongting Lake wetlands, China. Poplar plantations resulted in a higher species number and Shannon's diversity. Species compositions were different between areas with poplar and reed populations: a lower ratio of hygrophytes but a higher ratio of mesophytes, and a higher ratio of heliophytes but a l...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Oliver van Straaten Marife D Corre Katrin Wolf Martin Tchienkoua Eloy Cuellar Robin B Matthews Edzo Veldkamp

Tropical deforestation for the establishment of tree cash crop plantations causes significant alterations to soil organic carbon (SOC) dynamics. Despite this recognition, the current Intergovernmental Panel on Climate Change (IPCC) tier 1 method has a SOC change factor of 1 (no SOC loss) for conversion of forests to perennial tree crops, because of scarcity of SOC data. In this pantropic study,...

2013
Miren Onaindia Ibone Ametzaga-Arregi Mikel San Sebastián Anaïs Mitxelena Gloria Rodríguez-Loinaz Lorena Peña Josu G. Alday

Forestry industry in many European countries has begun to focus on sustainable forest management practices, and consequently, a greater emphasis is now being placed on the restoration and enhancement of native woodlands in places where intensive forestry is nowadays not highly profitable. In this context, we evaluate the natural regeneration of native oak woodland vegetation under cultivated st...

2008
Tom Gallagher Bob Shaffer Bob Rummer

As a routine wood source for a pulp mill, recent studies have shown that intensively managed, short-rotation hardwood plantations are not cost effective. The objective of this study was to determine if these plantations may be cost effective as “green” inventory, replacing some portion of high cost remote woodyard inventory. Three southeastern U.S. pulp mills were used as case studies in a net ...

2014
Yuxin Zhang Shuang Zhang Keming Ma Bojie Fu Madhur Anand

The role of forest plantations in biodiversity conservation has gained more attention in recent years. However, most work on evaluating the diversity of forest plantations focuses only on one spatial scale; thus, we examined the effects of sampling scale on diversity in forest plantations. We designed a hierarchical sampling strategy to collect data on woody species diversity in planted pine (P...

Journal: :PLoS ONE 2006
David G. Haskell Jonathan P. Evans Neil W. Pelkey

Native forests are shrinking worldwide, causing a loss of biological diversity. Our ability to prioritize forest conservation actions is hampered by a lack of information about the relative impacts of different types of forest loss on biodiversity. In particular, we lack rigorous comparisons of the effects of clearing forests for tree plantations and for human settlements, two leading causes of...

2017
Renhuan Zhu Zicheng Zheng Tingxuan Li Xizhou Zhang Shuqin He Yongdong Wang Tao Liu Wei Li

Climate warming and land use change are some of the drivers affecting soil organic carbon (SOC) dynamics. The Grain for Green Project, local natural resources, and geographical conditions have resulted in farmland conversion into tea plantations in the hilly region of Western Sichuan. However, the effect of such land conversion on SOC mineralization remains unknown. In order to understand the t...

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