scholarly journals The one hundred tree species prioritized for planting in the tropics and subtropics as indicated by database mining

2021 ◽  
Author(s):  
Roeland Kindt ◽  
◽  
Ian K Dawson ◽  
Jens-Peter B Lillesø ◽  
Alice Muchugi ◽  
...  

A systematic approach to tree planting and management globally is hindered by the limited synthesis of information sources on tree uses and species priorities. To help address this, the authors ‘mined’ information from 23 online global and regional databases to assemble a list of the most frequent tree species deemed useful for planting according to database mentions, with a focus on tropical regions. Using a simple vote count approach for ranking species, we obtained a shortlist of 100 trees mentioned in at least 10 of our data sources (the ‘top-100’ species). A longer list of 830 trees that were mentioned at least five times was also compiled. Our ‘top-100’ list indicated that the family Fabaceae (syn. Leguminosae) was most common. The information associated with our mined data sources indicated that the ‘top-100’ list consisted of a complementary group of species of differing uses. These included the following: for wood (mostly for timber) and fuel production, human nutrition, animal fodder supply, and environmental service provision (varied services). Of these uses, wood was most frequently specified, with fuel and food use also highly important. Many of the ‘top-100’ species were assigned multiple uses. The majority of the ‘top-100’ species had weediness characteristics according to ‘attribute’ invasiveness databases that were also reviewed, thereby demonstrating potential environmental concerns associated with tree planting that need to be balanced against environmental and livelihood benefits. Less than half of the ‘top-100’ species were included in the OECD Scheme for the Certification of Forest Reproductive Material, thus supporting a view that lack of germplasm access is a common concern for trees. A comparison of the ‘top-100’ species with regionally-defined tree inventories indicated their diverse continental origins, as would be anticipated from a global analysis. However, compared to baseline expectations, some geographic regions were better represented than others. Our analysis assists in priority-setting for research and serves as a guide to practical tree planting initiatives. We stress that this ‘top-100’ list does not necessarily represent tree priorities for the future, but provides a starting point for also addressing representation gaps. Indeed, our primary concern going forward is with the latter.

2021 ◽  
pp. 053901842199894
Author(s):  
Frank Adloff ◽  
Iris Hilbrich

Possible trajectories of sustainability are based on different concepts of nature. The article starts out from three trajectories of sustainability (modernization, transformation and control) and reconstructs one characteristic practice for each path with its specific conceptions of nature. The notion that nature provides human societies with relevant ecosystem services is typical of the path of modernization. Nature is reified and monetarized here, with regard to its utility for human societies. Practices of transformation, in contrast, emphasize the intrinsic ethical value of nature. This becomes particularly apparent in discourses on the rights of nature, whose starting point can be found in Latin American indigenous discourses, among others. Control practices such as geoengineering are based on earth-systemic conceptions of nature, in which no distinction is made between natural and social systems. The aim is to control the earth system as a whole in order for human societies to remain viable. Practices of sustainability thus show different ontological understandings of nature (dualistic or monistic) on the one hand and (implicit) ethics and sacralizations (anthropocentric or biocentric) on the other. The three reconstructed natures/cultures have different ontological and ethical affinities and conflict with each other. They are linked to very different knowledge cultures and life-worlds, which answer very differently to the question of what is of value in a society and in nature and how these values ought to be protected.


Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 692
Author(s):  
MD Abdul Mueed Choudhury ◽  
Ernesto Marcheggiani ◽  
Andrea Galli ◽  
Giuseppe Modica ◽  
Ben Somers

Currently, the worsening impacts of urbanizations have been impelled to the importance of monitoring and management of existing urban trees, securing sustainable use of the available green spaces. Urban tree species identification and evaluation of their roles in atmospheric Carbon Stock (CS) are still among the prime concerns for city planners regarding initiating a convenient and easily adaptive urban green planning and management system. A detailed methodology on the urban tree carbon stock calibration and mapping was conducted in the urban area of Brussels, Belgium. A comparative analysis of the mapping outcomes was assessed to define the convenience and efficiency of two different remote sensing data sources, Light Detection and Ranging (LiDAR) and WorldView-3 (WV-3), in a unique urban area. The mapping results were validated against field estimated carbon stocks. At the initial stage, dominant tree species were identified and classified using the high-resolution WorldView3 image, leading to the final carbon stock mapping based on the dominant species. An object-based image analysis approach was employed to attain an overall accuracy (OA) of 71% during the classification of the dominant species. The field estimations of carbon stock for each plot were done utilizing an allometric model based on the field tree dendrometric data. Later based on the correlation among the field data and the variables (i.e., Normalized Difference Vegetation Index, NDVI and Crown Height Model, CHM) extracted from the available remote sensing data, the carbon stock mapping and validation had been done in a GIS environment. The calibrated NDVI and CHM had been used to compute possible carbon stock in either case of the WV-3 image and LiDAR data, respectively. A comparative discussion has been introduced to bring out the issues, especially for the developing countries, where WV-3 data could be a better solution over the hardly available LiDAR data. This study could assist city planners in understanding and deciding the applicability of remote sensing data sources based on their availability and the level of expediency, ensuring a sustainable urban green management system.


2004 ◽  
Vol 5 (1) ◽  
pp. 43-58
Author(s):  
Jeffrey S. Galko ◽  

The ontological question of what there is, from the perspective of common sense, is intricately bound to what can be perceived. The above observation, when combined with the fact that nouns within language can be divided between nouns that admit counting, such as ‘pen’ or ‘human’, and those that do not, such as ‘water’ or ‘gold’, provides the starting point for the following investigation into the foundations of our linguistic and conceptual phenomena. The purpose of this paper is to claim that such phenomena are facilitated by, on the one hand, an intricate cognitive capacity, and on the other by the complex environment within which we live. We are, in a sense, cognitively equipped to perceive discrete instances of matter such as bodies of water. This equipment is related to, but also differs from, that devoted to the perception of objects such as this computer. Behind this difference in cognitive equipment underlies a rich ontology, the beginnings of which lies in the distinction between matter and objects. The following paper is an attempt to make explicit the relationship between matter and objects and also provide a window to our cognition of such entities.


KronoScope ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 7-27
Author(s):  
Carl Humphries

Abstract “Being is said in many ways,” claimed Aristotle, initiating a discussion about existential commitment that continues today. Might there not be reasons to say something similar about “having been,” or “having happened,” where these expressions denote something’s being located in the past? Moreover, if history – construed not only as an object of inquiry (actual events, etc.) but also as a way of casting light on certain matters – is primarily concerned with “things past,” then the question just posed also seems relevant to the question of what historical understanding amounts to. While the idea that ‘being’ may mean different things in different contexts has indisputable importance, the implications of other, past-temporal expressions are elusive. In what might any differences of substantive meaning encountered there consist? One starting point for responding – the one that provides the subject matter explored here – is furnished by the question of whether or not a certain way of addressing matters relating to the past permits or precludes forms of intelligibility that could be said to be ‘radically historical.’ After arguing that the existing options for addressing this issue remain unsatisfactory, I set out an alternative view of what it could mean to endorse or reject such an idea. This involves drawing distinctions and analogies connected with notions of temporal situatedness, human practicality and historicality, which are then linked to a further contrast between two ways of understanding the referential significance of what is involved when we self-ascribe a relation to a current situation in a manner construable as implying that we take ourselves to occupy a unique, yet circumstantially defined, perspective on that situation. As regards the latter, on one reading, the specific kind of indexically referring language we use – commonly labelled “de se” – is something whose rationale is exhausted by its practical utility as a communicative tool. On the other, it is viewed as capturing something of substantive importance about how we can be thought of as standing in relation to reality. I claim that this second reading, together with the line of thinking about self-identification and self-reference it helps foreground, can shed light on what it would mean to affirm or deny the possibility of radically historical forms of intelligibility – and thus also on what it could mean to ascribe a plurality of meanings to talk concerning things being ‘in the past.’


1970 ◽  
Vol 18 (2) ◽  
pp. 237
Author(s):  
WE Westman ◽  
DJ Anderson

Pattern analysis data are presented for a number of tree species populations sampled from two sites located in dry sclerophyll forest within the Ku-ring-gai Chase park of New South Wales. The distributions proved to be predominantly contagious or random, with regularity occurring only occasionally. Observed variations in the degree of aggregation exhibited by a species were taken into account in interpreting pattern analysis curves. The relation of pattern analysis data to sample quadrat data fitted to known mathematical models is extremely variable, and it is shown that pattern at block sizes other than the one under consideration may suppress the appearance of deviations from randomness at block sizes which do show contagion when sampled with randomly placed quadrats. The possible origins of contagious distributions in eucalypt forest are briefly discussed.


PALAPA ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 244-284
Author(s):  
Nurhadi Nurhadi ◽  
Mawardi Dalimunthe

The purpose of this study is to find out the concept of khilafah according to Sayyid Quthub and Taqiyuddin al-Nabhani, differences and legal basis. This study is a library model, with primary data sources, the Zhilalal-Qur'anic Tafseer and Nizham Al-Hukmi Fi Al-Islam and qualitative descriptive analysis methods. The result is the thought of the concept of khilafah according to sayyid Quthub: 1). The concept of the ruler / caliph, that who becomes the ruler of the choice of the Muslims, acts in absolute freedom, but that person gets the authority because he constantly applies the law of Allah Almighty. 2). The Islamic government system, the Supra Nasional government (the unity of the entire Islamic world). 3). The pillars of his Islamic government: a). Justice of the ruler; b). People's obedience; c). Consultation between the people and the authorities. Thought of the concept of the Caliphate according to Taqiyuddin Al-Nabhani: 1). The concept of the ruler / caliph is a person who represents the Ummah in government affairs and power and in applying syara 'laws. 2). The system of government is khilafah. 3). The pillars of his Islamic government: a). Sovereignty in the hands of syara '; b). Power of the people; c). To appoint a legal Caliph fardlu for all Muslims; d). Only Khailfah has the right to carry out tabanni (adoption) against syara 'laws; e) The Caliph has the right to make constitutions and all other laws. The differences in the concept of khilafah are both: 1). According to Sayyid Quthub, if the ruler fails, then the ruler can be dismissed if the Muslims are no longer satisfied with him. This statement gives a signal that the people get rid of the rulers who no longer fulfill their functions (zhalim rulers). It is different from the opinion of Taqiyuddin al-Nabhani. An Amir al-mu'minin (Khalifah), even though he is responsible before the people and his representatives, but the people and their representatives are not entitled to dismiss him. Nor will the Caliph be dismissed, except when deviating from Shara law. The one who determined the dismissal was only the Mazhalim court. 2). The system of Islamic government according to Sayyid Quthub does not question any system of government in accordance with the system of conditions of society, but this government is characterized by respect for the supremacy of Islamic law (shari'ah). Whereas According to Taqiyuddin Al-Nabhani that the system of Islamic government is khilafah. 3). The pillars of Islamic government according to Sayyid Quthub and Taqiyyuddin al-Nabhani, points three parts a and b at the above conclusions are: 1). Sayyid Quthub: a). Justice of the ruler; b). People's obedience; c). Consultation between the people and the authorities. 2). Taqiyyuddin al-Nabhani: a). Sovereignty in the hands of syara; b). Power of the people; c). To appoint a legal Caliph fardlu for all Muslims; d). Only Khailfah has the right to do tabanni (adoption) against the laws of shara; e). The Caliph has the right to make constitutions and all other laws. The legal bases for determining the Caliphate according to both: 1). The legal basis for the establishment of the Caliphate according to Sayyid Quthub: 1). Ruler, Qur'an Surah (2) al-Baqarah verse 30; 2). Islamic Government System, Qur'an Surah (24) an-Nur verse 55; 3). Pillars of Islamic Government, Qur'an Surah (4) an-Nisa 'verse 58. 2). The legal basis for the establishment of the Caliphate according to Taqiyyuddin al-Nabhani: 1). Ruler, hadith of Muslim history from Abu Said Al khudri, Hadith no. 1853 and Muslims from Abdullah Bin Amru Bin Ash, Hadith no. 1844; 2). Islamic Government System, Al-Qur'an surah an-Nisa '(4) verse 59, an-Nisa' (4) verse 65. Muslim, saheeh Muslim, volumes, 3 pp., 1459 and 1480; 3). Islamic Pillars of Government al-Qur'an surah An-Nisa (3) verse 65, and Surah An-Nisa (3) verses': 5.


2020 ◽  
Vol 39 (3) ◽  
pp. 125-138
Author(s):  
Alina Zajadacz ◽  
Aleksandra Minkwitz

AbstractThe purpose of the article is to present the concept of using social media (SM) as data sources and communication tools, useful at the various stages of planning, implementing and monitoring the effects of tourism development on a local level. The first part discusses the stages of planning, then presents the characteristics of SM, along with a discussion of the issues presented in the literature to this date. The next part presents data sources and methods of research on SM and functions that they can perform in tourism. The concept presented, on the one hand, reviews the perspectives of practical use of SM as a communication tool and source of data and, on the other hand, the challenges related to the need to further deepen research on tourism planning methods that are adequate to the continuously changing environment.


2008 ◽  
Vol 19 (1) ◽  
pp. 43-68
Author(s):  
Gordana Djeric

This text is part of a research conducted under the working title "What do we talk about when we are silent and what are we silent about when we are talking? - premises for the anthropology of silence about the nearest past." In the first part the author investigates the meaning of silence in the Croatian and Serbian press right before and during Croatia's Operation Storm. The ratio between silence, suppression of information and forgetting, on the one hand, and social memory, on the other, has been elaborated in the final part of the text by following reports about the anniversaries of Operation Storm in both Croatian and Serbian publics. The starting point lies in the belief that the phenomenon of silence (and suppression of information), being an immanent part of each discourse, represents an important factor in the creation of social relationships and system of value models, that it has important communication and cognitive functions and that the performance character lies in its essence. In short, silence makes it possible to form the prevailing image about this event, even if it does not construct it indirectly - through speech. The author has elaborated on the meaning of silence in the context of Operation Storm partly because studies about the breakup of Yugoslavia frequently mention silence as a manipulation strategy employed by some of the sides in the conflict (or analysts dealing with Yugoslav topics), while not a single study systematically investigates the semantic of silence and suppression of information in these conflicts. Most importantly, taking into account the frequency of direct silence in the newspaper discourse and rhetoric strategies that point at silence indirectly from the context and discourse, the author focuses on the relationship between the event (situation) and silence. In order to shed light on the way in which Operation Storm is remembered, i.e. forgotten, in the stakeholders' publics and political imageries, she follows the dailies - Vecernje Novosti Politika, Danas (Belgrade) - Vecernji List, Jutarnji List, Magazin supplement of the Jutarnji List (Zagreb), as well as texts about Operation Storm in weeklies such as the NIN and Vreme of Belgrade or Globus of Zagreb in the period between August 2, 1995 and mid-August 2006.


2007 ◽  
Vol 43 (2) ◽  
pp. 287-303
Author(s):  
Susanne Kogler

That art functions as a corrective to rational-scientific insights is one of the formative thoughts of art philosophy. The fact that artistic expression represents a corrective to linguistically-rationally affected insight also ranks among the constants of art philosophy in the 20th century. “Expression is the opponent of articulating something” can be read, for instance, in Adorno’s Aesthetic Theory with regards to the character of language in art and Jean François Lyotard wrote on aesthetic experience: “What happens to us is by no means something which we would have controlled, programmed or conceptually apprehended beforehand”. The uneducible, conceptually unattainable is also at the centre of current art production of the 21st century. On the basis of Lyotard’s and Adorno’s positions, the article shows that one should acknowledge a constancy of the topos of art as non-conceptual knowledge on the one hand as the continuing function of a tradition defined from the philosophical aesthetics of modernity to post-modernity and orientated on the artistic avant-garde. On the other hand and beyond this a continuous line of tradition of New Music becomes clear, leading to the expressionistic avant-garde of the 20th century which represented the starting point for Adorno’s music philosophy, through Lyotard’s focus on John Cage, up to the avant-garde of New Music in the era of post modernity. Specific features of contemporary art, such as rebellion against linguistic standards, an understanding of expressivity that opposes the traditional language of music and operates on the verge of silence, as well as the utopian vision of a modified reality which aims at transcendency enable a conception of art as non-conceptual knowledge, corresponding with the positions of art philosophy in modernity and post-modernity in important points. The relevance of focusing on this line of tradition for musicology lies in the fact that it sheds new light on the musical avant-garde and its further function and, last but not least, that it opens new perspectives in understanding contemporary artistic productions.


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