2.2. Cadastre
2.2.1. Cadastre definition
2.2.1.1. Before 1995 FIG Statement
At Commission 7 Opening Address at the 1990 FIG Congress a set of clear and concise cadastral definitions were presented, as follows (Henssen & Williamson, 1990):
In the previous cited work (Henssen & Williamson, 1990) it´s also concluded that an adequate land recording system (being a land registration system and a cadastre) consists of two basic parts:
Finally, (Henssen & Williamson, 1990) stated that, depending often on the author's discipline (e.g. lawyer, land surveyor or layman) and country of origin:
2.2.1.2. FIG Statement on the Cadastre
A cadastre is normally a parcel based, and up-to-date land information system containing a record of interests in land (e.g. rights, restrictions and responsibilities). It usually includes a geometric description of land parcels linked to other records describing the nature of the interests, the ownership or control of those interests, and often the value of the parcel and its improvements. It may be established for fiscal purposes (e.g. valuation and equitable taxation), legal purposes (conveyancing), to assist in the management of land and land use (e.g. for planning and other administrative purposes), and enables sustainable development and environmental protection (FIG, 1995).
This definition frames the so called conventional LA systems which are based on the ‘parcel-based’ approach.
2.2.1.3. A wider inclusive view
According to (Augustinus, 2010) the greatest challenges to any country's cadastral system are the informal settlements. By 2030 the urban population of all developing regions, including Asia and Africa, will far outweigh the rural. This massive shift towards urbanisation over the next twenty years will be characterised by informality, illegality and unplanned settlements. Urban growth will be associated with poverty and slum growth. Today about one third of urban residents in the developing world live in slums which either lie outside the cadastre or the occupation of which does not match it.
The land industry needs rather to be developing appropriate tools for users across the spectrum, including the poor, women and men, and in different regions of the world, not just for the developed world. So, what needs to be developed is a pro-poor land-administration system (LAS) of completely different design, interoperable with current cadastral systems (Augustinus, 2010). This technical gap needs to be filled for a range of purposes, including:
In this context, alternative representations of area’s and alternatives for traditional land surveys are needed. Traditional land surveys are costly and time consuming, and proved not to work in many situations in developing countries. Handheld GPS, or the use of satellite imagery, are considered to be inaccurate by the surveyor’s community; but this attitude results in a lack of LA coverage. There is a need for complete and up-to-date LA coverage. A more flexible system has to be based on a global standard like LADM, and it has to be manageable by the local community itself. It is here where the Social Tenure Domain Model (STDM) comes in. This kind of standardization allows for the integration of data collected by communities into a formal LA system at a later moment in time (Uitermark, et al., 2010).
Furthermore, and according to (Roberge, 2010) developing countries, where the need for land-rights infrastructure is primary and resources are scarce, require light and low-cost solutions creating exact rather than accurate data.
Figure 14 - A fit-for-purpose approach (Enemark, 2012)
Reinforcing this idea, (Enemark, 2013) framing cadastre as the core engine for spatially enabled land administration, states that spatial enablement is not primarily about accuracy: it is about adequate identification, completeness and credibility. Systems should be built using a “fit for purpose‟ approach (presented in Figure 14) while accuracy can be incrementally improved over time when justifying serving the needs of citizens and society. In relation to the concept of the continuum of land rights such a fit for purpose approach could then be referred to as a “continuum of accuracy‟.
A final reference to “The Continuum Paradigm” concept (Teo, 2012), that is framed and extends the “Land Rights Continuum” (UN-HABITAT, 2011) (UN-HABITAT, 2012a) (Teo, 2012b) notion to broader aspects of land systems, compose by a Continuum of Approaches (from less to more rigorous), a Continuum of Technology (from less to more sophisticate), a Continuum of Measurement (from less to more precise); and a Continual Tools Development (from complex to greater complexity) as shown in Figure 15. Therefore, (Teo, 2012) states that this would be the only way to build land systems, especially in developing countries, in order to address the realities of different sections of society.
Figure 15 – The Continuum Paradigm (Teo, 2012)
PS: This text is extracted from my Master's Thesis in GIS and Science (published at RUN: The implementation of an Enterprise Geographical Information System to support Cadastre and Exp... ) Dissertation's State of Art Chapter 2.
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