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The cultural context of biodiversity conservation - Oapen

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148<br />

5.1.1 Land use systems<br />

<strong>The</strong> <strong>cultural</strong> <strong>context</strong> <strong>of</strong> <strong>biodiversity</strong> <strong>conservation</strong><br />

<strong>The</strong> agri- and silvi<strong>cultural</strong> practices <strong>of</strong> the farmers we worked with are based on a system<br />

that involves a specific range <strong>of</strong> vegetation zones in succeeding growth stages.<br />

Examining this spatial distribution, we distinguished seven principal types <strong>of</strong> land use,<br />

from permanently cultivated fields to swidden land at different levels <strong>of</strong> recovery and<br />

areas <strong>of</strong> mature forest. <strong>The</strong> first most obviously managed unit applies to farmland under<br />

current cultivation (Fig. 5.1). As aforementioned, shifting cultivation is the predominant<br />

farming system traditionally practised by agriculturists on smallholdings<br />

throughout Alta Verapaz. <strong>The</strong> system for reclaiming deforested land implies the rotational<br />

cultivation <strong>of</strong> small plots for two or three years in succession until the soil nutrients<br />

are exhausted. <strong>The</strong>n the terrain is abandoned and lies fallow until litterproducing<br />

trees have regrown and restored the soil's fertility for the next cultivation<br />

cycle. After clearing the land for cultivation, the remaining vegetation is burned to<br />

provide nutrients for the new crops. <strong>The</strong> farmers inter-crop numerous varieties <strong>of</strong><br />

secondary plants amongst the major staple crop maize. As a result, the plots can contain<br />

up to 40 different crop plants including vegetables, root crops and spices. 1<br />

Fig. 5.1 A milpa in San Benito<br />

1 Shifting cultivation is one <strong>of</strong> the most widespread tropical soil management techniques. Following<br />

a rotational principle, land is periodically fallowed and <strong>of</strong>ten planted with species that help to restore<br />

the soil fertility. As a subsistence strategy, it has been disapproved by many governments and international<br />

agencies as it was regarded as a waste <strong>of</strong> land and human resources as well as being a major<br />

cause <strong>of</strong> soil erosion and deterioration (Warner 1991: 9). After a lengthy controversy over the purported<br />

environmental destruction and economic inefficiency <strong>of</strong> this traditional land use system,<br />

which commonly involves burning practices, awareness has grown that swidden agriculture practised<br />

by many indigenous peoples is not only sustainable but also contributes to maintain and conserve<br />

crop and wild plant diversity (Nakashima & Roué 2002: 320). Slash and burn systems in the tropics<br />

do, however, have limitations; population pressure can quickly bring about impoverishment <strong>of</strong> the<br />

poorer soils and result in erosion.

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