Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Deying Xu"'
Publikováno v:
Bulletin of the Polish Academy of Sciences: Technical Sciences, Vol 71, Iss 6 (2023)
PID controllers are crucial for industrial control because of their simple structure and good robustness. In order to further improve the accuracy of PID controllers, this paper proposes an improved sparrow search algorithm (ISSA) to prevent the prob
Externí odkaz:
https://doaj.org/article/d348bc2c85e741d39a11fc2c69d36c89
Autor:
Deying Xu, Xiao-Quan Zhang
Publikováno v:
Environmental Science & Policy. 6:421-432
Forests are believed to be a major sink for atmospheric carbon dioxide. There are 158.94 million hectares (Mha) of forests in China, accounting for 16.5% of its land area. These extensive forests may play a vital role in the global carbon (C) cycle a
Autor:
Deying Xu, Xiao-Quan Zhang
Publikováno v:
Forest Ecology and Management. 173:201-211
A eco-physiological semi-process-based model for canopy photosynthesis and growth, PHOTOS, was developed, by which canopy photosynthesis, net primary production, and growth for an average tree in a Chinese fir plantation on a sloped site was calculat
Autor:
Xiao-Quan Zhang, Deying Xu
Publikováno v:
Forest Ecology and Management. 170:107-116
Calculation of radiation transfer within the canopy of a plantation on sloped sites is described. The canopy was assumed to consist of evenly cone-shaped crowns. Within-tree shading by object tree and between-tree shading by tree crowns around the ob
A study of the impacts of climate change on the geographic distribution of Pinus koraiensis in China
Publikováno v:
Environment International, Vol 27, Iss 2, Pp 201-205 (2001)
The climatic conditions and elevation of the potential distribution area of Korean pine (Pinus koraiensis Sieb. et Zucc) in China were determined by an ecological information system GREEN that has been developed by [Yan H, Booth TH, Zuo H, editors. G
Publikováno v:
Mitigation and Adaptation Strategies for Global Change. 6:213-232
In this paper, forest protection, short- and long-rotation plantations, forestregeneration, agroforestry and other activities for carbon (C) sequestration wereevaluated. China may be divided into five sub-regions, of which three fallin the main fores
Autor:
James Hansen, David G. Streets, Kejun Jiang, Xiao-Quan Zhang, Deying Xu, Mark Z. Jacobson, Jonathan E. Sinton, Xiulian Hu
Publikováno v:
Science. 294:1835-1837
Using the most recent energy and other statistical data, we have estimated the annual trends in China9s greenhouse gas emissions for the period 1990 to 2000. The authors of this Policy Forum calculate that COemissions declined by 7.3% between 1996 an
Publikováno v:
Ying yong sheng tai xue bao = The journal of applied ecology. 16(6)
From the viewpoint of the globe and ecosystem, this paper reviewed the effects and the possible action mechanisms of plant process on soil organic carbon concentration. Plant process could affect the source and sink of soil organic carbon, which was
Publikováno v:
Ying yong sheng tai xue bao = The journal of applied ecology. 15(4)
Through comparing the concentration and inventory of soil organic carbon (SOC) and its distribution in soil profiles under cropland, rangeland, natural secondary forest (brushwood, natural secondary forest dominated by Querces liaotungensis or Populu
Publikováno v:
Huan jing ke xue= Huanjing kexue. 24(6)
The temporal variations of soil respiration under cropland, rangeland, natural secondary forest (brushwood, nature secondary forest dominated by Querces liaotungensis koiz or Populus davidiana dode) and the plantation of larch (13, 18 and 25-year-old