Impact factors identification of spatial heterogeneity of herbaceous plant diversity on five southern islands of Miaodao Archipelago in North China

2016 ◽  
Vol 34 (5) ◽  
pp. 937-951 ◽  
Author(s):  
Yuan Chi ◽  
Honghua Shi ◽  
Xiaoli Wang ◽  
Xuebo Qin ◽  
Wei Zheng ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Plant Diversity ◽  
North China ◽  
Impact Factors ◽  
Herbaceous Plant ◽  
Miaodao Archipelago

scholarly journals Short-Term Effects of Silvicultural Treatments on Microsite Heterogeneity and Plant Diversity in Mature Tennessee Oak-Hickory Forests

2006 ◽  
Vol 23 (3) ◽  
pp. 197-203 ◽  
Author(s):  
Samuel W. Jackson ◽  
Craig A. Harper ◽  
David S. Buckley ◽  
Bradley F. Miller
Keyword(s):  
Soil Moisture ◽  
Plant Diversity ◽  
Prescribed Burning ◽  
Canopy Cover ◽  
First Year ◽  
Herbaceous Plant ◽  
Silvicultural Treatments ◽  
Canopy Trees ◽  
Microsite Heterogeneity

Abstract Growing emphasis on sustainability has increased the demand for information on effects of forest management on species diversity. We investigated the hypothesis that plant diversity is a function of microsite heterogeneity by documenting plant diversity and heterogeneity in canopy cover, light, and soil moisture produced by four silvicultural treatments during the first growing season following treatment: prescribed burning, wildlife retention cut with prescribed burning, wildlife retention cut, and shelterwood cutting. Treatments and controls were randomly assigned within four relatively undisturbed, 70–90-year-old oak-hickory stands. Heterogeneity in canopy cover and photosynthetically active radiation was greatest after shelterwood cutting, whereas the wildlife retention cut resulted in less removal of canopy trees and a smaller increase in heterogeneity of these factors. The addition of prescribed burning enhanced the effects of the wildlife retention cut. Prescribed burning alone had the least impact on heterogeneity of these factors. Soil moisture variability appeared to be independent of treatments. Shelterwood cutting increased first-year herbaceous plant diversity, and this increase was likely due, in part, to increased heterogeneity in canopy cover, light, and seedbed condition. These first-year results partially support the hypothesis that plant diversity is a function of microsite diversity in these forests. Long-term monitoring is underway.

Herbaceous plant diversity and soil physicochemical properties on the regeneration slash of Pinus sylvestris var. mongolica

2017 ◽  
Vol 37 (24) ◽  
Author(s):  
吕刚 LÜ Gang ◽  
王婷 WANG Ting ◽  
李叶鑫 LI Yexin ◽  
魏忠平 WEI Zhongping ◽  
王凯 WANG Kai
Keyword(s):  
Pinus Sylvestris ◽  
Physicochemical Properties ◽  
Plant Diversity ◽  
Herbaceous Plant ◽  
Soil Physicochemical Properties

scholarly journals Examining the driving factors of industrial CO2 emissions in Chinese cities using geographically weighted regression model

2021 ◽  
Author(s):  
Huiping Wang ◽  
Xueying Zhang
Keyword(s):  
Spatial Heterogeneity ◽  
Geographically Weighted Regression ◽  
Service Industry ◽  
Industrial Sector ◽  
Weighted Regression ◽  
Impact Factors ◽  
Geographically Weighted Regression Model ◽  
Level Of Economic Development ◽  
Investment In Fixed Assets ◽  
The Impact

Abstract The industrial sector is the sector with the largest CO2 emissions, and to reduce overall CO2 emissions, analysis of the impact factors holds significance. Based on the 2015 industrial CO2 emissions of 282 cities in China combined with economic and social data, and a geographically weighted regression (GWR) model, we analysed the characteristics of the spatial distribution of CO2 emissions and the influencing factors of spatial heterogeneity. The results show that China's urban industrial CO2 emissions present a significant spatial agglomeration state that includes Shandong, Beijing, Tianjin, Shanghai, Zhejiang, and Jiangsu, and the core of the coastal areas form a high-high (H-H) concentration; a low-low aggregation (L-L) is formed in less developed areas such as Guizhou, Yunnan, Sichuan and Guangxi. The influence of various factors on industrial CO2 emissions has significant spatial heterogeneity. The Industrial scale, industry share of GDP, and share of the service industry in GDP are factors that promote industrial CO2 emissions. The technological innovation, population density, and social investment in fixed assets are important factors that inhibit industrial CO2 emissions, but their impact on industrial CO2 emissions shows spatial differences. In contrast, the level of economic development, foreign direct investment, financial development and government intervention have a two-way impact on industrial CO2 emissions.

scholarly journals Spatial Heterogeneity of Plant Diversity within and between Neighborhoods and Its Implications for a Plant Diversity Survey in Urban Areas

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 416
Author(s):  
Yuebo Su ◽  
Cheng Gong ◽  
Bowen Cui ◽  
Peipei Guo ◽  
Zhiyun Ouyang ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Plant Species ◽  
Plant Diversity ◽  
Hierarchical Linear Modeling ◽  
Urban Areas ◽  
Urban Neighborhoods ◽  
Linear Modeling ◽  
The Mean ◽  
Neighborhood Scale

The spatial heterogeneity of plant diversity at the neighborhood scale has less been understood, although it is very important for the planning and management of neighborhood landscape. In this case study of Beijing, we conducted intensive investigations of the plant diversity in different neighborhoods along a rural–urban gradient. The results showed that the mean numbers of plant species per neighborhood were 30.5 for trees, 18.8 for shrubs, and 31.9 for herbs, respectively. There were significant logarithmic relationships between the numbers of species and patch area, indicating that larger patches within neighborhoods could harbor more plant species. Hierarchical linear modeling showed that the variations in plant diversity within neighborhoods were higher than those between neighborhoods. The number of species increased logistically with both the number of patches within neighborhoods and the number of neighborhoods, suggesting that it is important to sample a sufficient number of patches within neighborhoods, as well as a sufficient number of neighborhoods in order to sample 90% of the plant species during the investigation of plant diversity in urban neighborhoods. So the hierarchical design of sampling should be recommended for investigating plant diversity in urban areas.

Patterns of herbaceous plant diversity in southeastern Louisiana pine savannas

2006 ◽  
Vol 9 (1) ◽  
pp. 17-26 ◽  
Author(s):  
P.A. Keddy ◽  
L. Smith ◽  
D.R. Campbell ◽  
M. Clark ◽  
G. Montz
Keyword(s):  
Plant Diversity ◽  
Herbaceous Plant ◽  
Pine Savannas ◽  
Southeastern Louisiana
Sign in / Sign up

Export Citation Format

Share Document