| Literature DB >> 22216114 |
Craig Leisher1, Roy Brouwer, Timothy M Boucher, Rogier Vogelij, W R Bainbridge, M Sanjayan.
Abstract
The goal of preserving nature is often in conflict with economic development and the aspirations of the rural poor. Nowhere is this more striking than in native grasslands, which have been extensively converted until a mere fraction of their original extent remains. This is not surprising; grasslands flourish in places coveted by humans, primed for agriculture, plantations, and settlements that nearly always trump conservation efforts. The Umgano grassland conservation and poverty reduction project in KwaZulu-Natal Province, South Africa uses community-based spatial planning to balance the conversion of its lower-conservation value grasslands to a timber plantation, while conserving higher-value grasslands for heritage purposes and managed livestock grazing. Ten years after project launch, we measured the ecological and socioeconomic impacts of the project using Normalized Differential Vegetation Index remote sensing data and over 500 household interviews, as compared with similar non-conserved areas. Zoned management of the Umgano area had resulted in between 9% and 17% greater average peak production in the grassland areas compared to control sites. There was also a 21% gain in incomes for the roughly one hundred people employed by the forestry efforts, when compared to others in their village. Community-based spatial zoning is an overlooked tool for balancing conservation and development but may require, as we found in Umgano, certain critical factors including strong local leadership, an accountable financial management mechanism to distribute income, outside technical expertise for the zoning design, and community support.Entities:
Mesh:
Year: 2011 PMID: 22216114 PMCID: PMC3244421 DOI: 10.1371/journal.pone.0028807
Source DB: PubMed Journal: PLoS One ISSN: 1932-6203 Impact factor: 3.240
Figure 1Location of villages included in the rural household survey and ecological sampling sites.
Figure 2Lowland area, 10-year average seasonal NDVI.
Shows the 10-year average NDVI by the day of the year, with higher NDVI equaling greater grass biomass, and earlier greening and later senesce showing a longer growing season. “Lowland controls” shows the average of the control sites.
Figure 3Highland area, 10-year average seasonal NDVI.
Shows the 10-year average NDVI by the day of the year, with higher NDVI equaling greater grass biomass, and earlier greening and later senesce showing a longer growing season. “Highland controls” shows the average of the control sites.
Figure 4Lowland area, time-integrated NDVI per year.
Shows the sum of the annual NDVI for each growing season from 2000 to 2010 which is a proxy for the total biomass produced in a site. “Lowland controls” shows the average of the control sites.
Figure 5Highland area, time-integrated NDVI per year.
Shows the sum of the annual NDVI for each growing season from 2000 to 2010 which is a proxy for the total biomass produced in a site. “Highland controls” shows the average of the control sites.
Sample household characteristics inside and outside the MTC.
| Inside MTC ( | St. Dev. | Outside MTC ( | St. Dev. | |
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| Share female respondents (%) | 68.0 | 64.0 | ||
| Average age | 45.0 | 17.3 | 47.4 | 16.9 |
| Average household size | 6.4 | 3.3 | 5.9 | 3.2 |
| Average number of children | 2.9 | 2.1 | 2.5 | 2.1 |
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| Share illiterate (%) | 14.4 | 13.8 | ||
| Average years of schooling | 6.7 | 3.8 | 7.0 | 3.9 |
| Average productive household income (ZAR/year) | 10,113 | 30,840 | 10,504 | 26,942 |
| Share depending on government grants only (%) | 57.5 | 54.7 | ||
| Average total household income (ZAR/year) | 17,176 | 31,264 | 20,313 | 37,831 |
| Median total household income (ZAR/year) | 9,000 | 8,640 | ||
| Average per capita income (ZAR/person/year) | 3,827 | 14,648 | 3,992 | 8,815 |
| Share under the international US$ 2 per day poverty threshold (%) | 33.0 | 41.6 | ||
| Share borrowing money in community (%) | 78.7 | 77.8 | ||
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| Share living in modern brick house (%) | 33.2 | 48.8 | ||
| Share with electricity (%) | 5.1 | 17.4 | ||
| Average amount of time to collect water (hours per day) | 1.2 | 1.3 | 1.2 | 1.0 |
| Share depending on forest for firewood and income (%) | 27.3 | 17.1 | ||
| Average amount of time to collect firewood (hours per day) | 4.1 | 2.0 | 3.7 | 1.8 |
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| Share involved in crop farming (%) | 39.8 | 50.3 | ||
| Share self-sufficient whole year round (%) | 4.2 | 4.9 | ||
| Average number of months per year not self-sufficient | 8.8 | 3.8 | 7.3 | 3.8 |
| Share cattle holders in sample (%) | 35.0 | 31.7 | ||
| Average number of cattle | 9.0 | 9.7 | 8.4 | 6.5 |
| Share suffering from soil erosion (%) | 40.3 | 50.3 | ||
| Share taking soil erosion measures (%) | 74.4 | 68.7 |
Cattle holder characteristics inside and outside the MTC.
| Inside MTC ( | St. Dev. | Outside MTC ( | St. Dev. | |
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| Average age | 48.0 | 18.0 | 46.5 | 16.2 |
| Average household size | 7.1 | 3.5 | 7.3 | 3.4 |
| Average number of children | 3.2 | 2.2 | 3.1 | 2.2 |
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| Share illiterate (%) | 17.7 | 4.0 | ||
| Average years of schooling | 6.7 | 4.1 | 7.5 | 3.2 |
| Average productive household income (ZAR/year) | 18,853 | 46,168 | 18,618 | 38,590 |
| Average total household income (ZAR/year) | 27,296 | 45,763 | 24,448 | 41,044 |
| Average per capita income (ZAR/person/year) | 6,204 | 23,853 | 4,289 | 10,893 |
| Share under the international US$ 2 per day poverty threshold (%) | 24.1 | 37.3 | ||
| Share borrowing money in community (%) | 79.5 | 77.5 | ||
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| Share living in modern brick house (%) | 45.4 | 56.9 | ||
| Share with electricity (%) | 6.1 | 23.5 | ||
| Average amount of time to collect water (hours per day) | 1.3 | 1.6 | 1.2 | 1.0 |
| Average amount of time to collect firewood (hours per day) | 4.1 | 2.0 | 3.3 | 1.7 |
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| Share involved in crop farming (%) | 63.9 | 70.6 | ||
| Share self-sufficient whole year round (%) | 7.0 | 10.2 | ||
| Average number of months per year not self-sufficient | 7.6 | 3.8 | 5.8 | 3.7 |
| Average number of cattle | 8.5 | 9.1 | 8.4 | 6.5 |
| Share able to find grazing ground all year round (%) | 70.5 | 70.5 | ||
| Average travel distance to find grazing ground (km) | 2.3 | 1.9 | 2.2 | 1.8 |
| Share who buys fodder (%) | 64.4 | 65.4 | ||
| Average share cattle dying in winter (%) | 18.2 | 22.1 | 13.8 | 16.1 |
| Share believing unpalatable grass has increased past 10 years (%) | 36.0 | 65.2 | ||
| Share suffering from soil erosion (%) | 54.7 | 51.0 | ||
| Share taking soil erosion measures (%) | 84.0 | 78.6 |