نتایج جستجو برای: ecological forestry
تعداد نتایج: 109541 فیلتر نتایج به سال:
Claim of sustainability are virtually impossible to prove but enough is known about tropical forest ecology and silviculture to protect ecosystem functions and maintain biodiversity while still deriving financial profirs from logging . Rapid improvements in long-term forest production will derive from better planning of harvesting operations and stand improvement treatments. Lack of good manage...
Projected warming in Sweden and other Fennoscandian countries will probably increase growth rates of forest trees near their northern limits, increase the probability of new pest outbreaks, and foster northerly migration of both native and exotic species. The greatest challenges for sustainable forestry are to restore and enhance the ecological and socioeconomic diversity of intensively managed...
Riparian areas are critical interfaces between aquatic and terrestrial ecosystems. Protecting and enhancing them by implementing streamside management zones (SMZs) is an essential practice of sustainable forestry. SMZs provide ecological functions including protection against non-point source pollution, promotion of water infiltration, contribution of beneficial nutrients and coarse woody debri...
“Ecosystem management” complicates forest management considerably. In this paper we extend the economic analysis of forestry to capture both the temporal and the spatial dimensions, allowing optimization of timber harvest decisions throughout an ecosystem. Dynamic programming simulations illustrate the implications for the simplest ecosystem, consisting of two forest management units. Results i...
Genetic evaluation and core collection construction of crape myrtle accessions using 1 newly developed EST-SSR markers 2 Yuanjun Ye, Lu Feng, Yiqian Ju, Ming Cai, Tangren Cheng, Jia Wang, Qixiang Zhang, 3 Huitang Pan 4 Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular 5 Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of 6 Urban and ...
1Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, 5 P. R. China 6 2Key Lab of Crop Heterosis and Utilization, Beijing Key Lab of Crop Genetic Improvement, Ministry 7 of Education, China Agricultural University 8 3College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China 9 4Key Laboratory of Agro-Ecolo...
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