Results 21 to 30 of about 5,470,624 (304)

Index of Diversity as Applied to Ecological Problems [PDF]

Nature, 1945
I HAVE read with interest Mr. Jones's letter on the results of the application of the logarithmic series and the index of diversity to his quadrat observations. I completely agree with him that the theoretical basis requires further study; as also does the field application to both animals and plants.
openaire   +2 more sources

Ecological environmental quality index of 27 provinces.

, 2022
Ecological environmental quality index of 27 provinces.
Jun Zhang (48506), Shilu Zhang (7301885), Xinrui Li (443177), Mingxia Xu (8082935), Maoqing Duan (12407446), Junyu He (5346437)   +5 more
core   +1 more source

Optical instruments for measuring leaf area index in low vegetation : application in Arctic ecosystems [PDF]

, 2005
Author Posting. © Ecological Society of America, 2005. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution.
Williams, Mathew, Wijk, M.T., van, van Wijk, Mark T., Williams, M., Williams, Mathew; id_orcid   +4 more
core   +1 more source

On the Landscape Activity Measure Coupling Ecological Index and Public Vitality Index of UGI: The Case Study of Zhongshan, China

Land, 2022
In the context of high-quality urban development and the increasingly important role of urban green infrastructure (UGI) in public life, landscape activity (LA) has gradually become a dominant indicator for improving UGI quality and efficiency, as well ...
Xueling Zhang, Ruoxuan Huang, Yixuan Yang   +2 more
doaj   +1 more source

Correlation analysis between water quality and composite index (a-ecological environmental quality index; b-human activities quantitative index).

, 2022
Correlation analysis between water quality and composite index (a-ecological environmental quality index; b-human activities quantitative index).
Jun Zhang (48506), Shilu Zhang (7301885), Xinrui Li (443177), Mingxia Xu (8082935), Maoqing Duan (12407446), Junyu He (5346437)   +5 more
core   +1 more source

Dynamics of changes in surface water quality indicators of the Western Bug River basin within Ukraine using GIS technologies

Journal of Water and Land Development, 2019
The environmental assessment of the surface water quality of the Western Bug River has been made using the system of classification quality of land surface water of Ukraine in accordance with the approved methodology, which allows comparing water quality
Gopchak Igor, Basiuk Tetiana, Bialyk Ihor, Pinchuk Oleg, Gerasimov Ievgenii   +4 more
doaj   +1 more source

Ecological responses to the coastal exploitation of urban agglomerations along the Pearl River Estuary

Environmental Research Letters, 2019
With the rapid development of urban agglomerations in the Pearl River Estuary (PRE), an increasing number of ecological problems have been exposed to the surrounding coastal zones.
Rui Zhang, Bin Ai, Fengguan Gu
doaj   +1 more source

Typology and monitoring of ecological status of moving waters of Serbia [PDF]

Veterinarski Glasnik, 2007
The paper presents work carried out with the objective of the implementation of the European Union Water Framework Directive. The data on communities of water organisms, together with the abiotic parameters, are used to define the typology, the type of ...
Cakić Predrag, Paunović Momir, Đikanović Vesna, Jakovčev-Todorović Dunja, Simić Vladica, Kulišić Zoran   +5 more
doaj   +1 more source

Ecological systems comprehensive index value for various regions.

, 2023
Ecological systems comprehensive index value for various regions.
Liuhua Zhang (15194885), Yanan Tong (434334), Tianbao Gong (15194888)   +2 more
core   +1 more source

Ecological integrity assessment of the Jajrood river using fish and macroinvertebrates indices [PDF]

علوم محیطی, 2019
Introduction: Nowadays, many indicators have been developed to assess water quality and ecological classification of rivers based on variations in ecological structure.
Kamal Khezri, Asghar Abdoli, Bahram Hasanzadeh Kiabi, Hussein Valikhani, Jaber Aazami   +4 more
doaj   +1 more source