Monitoring Australian Rangeland Sites Using Landscape Function Indicators and Ground- and Remote-Based Techniques

Author(s):  
John A. Ludwig ◽  
Gary N. Bastin ◽  
Robert W. Eager ◽  
Robert Karfs ◽  
Pieter Ketner ◽  
...  
Keyword(s):  
2019 ◽  
Vol 108 ◽  
pp. 22-29 ◽  
Author(s):  
Bruno Stefan De Simoni ◽  
Mariangela Garcia Praça Leite

2016 ◽  
Vol 67 (4) ◽  
pp. 409-420 ◽  
Author(s):  
Z. J. Read ◽  
H. P. King ◽  
D. J. Tongway ◽  
S. Ogilvy ◽  
R. S. B. Greene ◽  
...  

2017 ◽  
Vol 39 (3) ◽  
pp. 253 ◽  
Author(s):  
F. Jafari ◽  
R. Jafari ◽  
H. Bashari

Appropriate rangeland management requires rangeland function analysis at broad scales. This study aimed to examine the potential of remotely sensed function indices extracted from Landsat data to evaluate the function of semi-arid rangelands in central Iran at the sub-basin scale. Three replicate 30-m transects were randomly placed in the dominant slope direction of 14 selected sub-basins. Various structural properties of vegetation (e.g. number and size of vegetation patches and interpatch lengths) and soil surface were scored based on the landscape function analysis (LFA) procedure. The obtained structural and function indices of the LFA, as well as field percent vegetation cover, were compared with the perpendicular distance vegetation index and remotely sensed function indices including proximity, lacunarity, leakiness index, and weighted mean patch size (WMPS). Remotely sensed function indices were found to be capable of discriminating rangeland landscapes with different conditions. Results showed that the structural properties of vegetation considered in the LFA could also be obtained through WMPS and proximity indices (R >0.76; P < 0.01). All indices, except for lacunarity, had significant correlations with percent vegetation cover and the strongest correlation was observed between WMPS and proximity. Our findings highlight the usefulness and efficiency of function indices derived from satellite data in the estimation of structural and functional properties of rangeland landscapes at the sub-basin scale.


Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 654 ◽  
Author(s):  
Caiyuan Wang ◽  
Peiling Yang ◽  
Yunkai Li ◽  
Zhongshan Yang ◽  
Shumei Ren ◽  
...  

The implementation of energy conservation and emissions reduction in Beijing prompted yearly increases in the area of urban green space, leading to direct increases in urban water consumption. This aggravated an already tense situation of water shortage. Considering the low irrigation water utilization effectives of the urban green space system, the typical urban greening shrub (Ligustrum vicaryi) was selected as the research object of this study. In a pot experiment, three mulch materials were selected: gravel (CH1), pine needles + gravel (CH2), and bark + gravel (CH3). These materials were set to a uniform thickness of 3 cm, and soil water was maintained between 75% and 85% of the field capacity. Using the analytic hierarchy process and fuzzy mathematics model, the physiological and ecological response characteristics of Ligustrum vicaryi were investigated under different combinations of mulch material. The results for various processing, regarding plant growth, showed CH3 > CH2 > CH1 > CK (Control Check). The leaf area, total leaf area, and leaf area index of CH3 were, respectively, 21.4%, 21.9%, and 62.5% larger than those of the control check (CK). Regarding physiological characteristics, photosynthetic rate, evaporation rate, stomatal conductance, and water use efficiency of CH3 were better than for the other treatments. Regarding ecological services, carbon fixation, oxygen release, cooling, and quantity of humidification of CH3 were optimal. Considered comprehensively for the landscape function, physical characteristics, and ecological services of Ligustrum vicaryi, the preliminary thought is that bark and gravel dual-element mulch, with a layer thickness of 3 cm, was the optimal soil cover treatment for the typical city greening shrub Ligustrum vicaryi. Using the analytic hierarchy process (AHP) and the fuzzy mathematical model for the evaluation of the effects of different soil cover treatments on the landscape function, ecological service function, and physiological characteristics of Ligustrum vicaryi was reliable and feasible. The model evaluation results match the actual ones.


2012 ◽  
Vol 50 (No. 9) ◽  
pp. 388-393 ◽  
Author(s):  
S. Kubíčková

This paper describes research to quantify, in monetary terms, the landscape amenity benefits of agriculture in the Protected Landscape Area White Carpathians. Within the case study of the PLA, we measured benefits to three groups: local residents, visitors, and the general public. The benefit measurement technique used in the main part of the study was the Contingent Valuation Method (CVM). This allowed the estimation of both use and non-use (existence and bequest value). The emphasis in this paper is the derivation of information, which is essential for the design, and evaluation of compensation programs targeted to landscape amenity protection. Primarily, the need for this arises because of the existence of genuine concern for the provision of landscape amenity services by agriculture. It is also useful and of interest to evaluate and compare the perceptions of agricultural landscape amenity benefits as held by different affected groups of people.


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