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结合可持续土地管理技术应对肯尼亚半干旱地区的土地退化并改善农村生计

Combining Sustainable Land Management Technologies to Combat Land Degradation and Improve Rural Livelihoods in Semi-arid Lands in Kenya.

作者信息

Mganga K Z, Musimba N K R, Nyariki D M

机构信息

Department of Range and Wildlife Sciences, School of Agriculture and Veterinary Sciences, South Eastern Kenya University (SEKU), P.O. Box 170-90200, Kitui, Kenya.

Department of Agricultural Economics and Agribusiness, School of Agriculture and Veterinary Sciences, South Eastern Kenya University (SEKU), P.O. Box 170-90200, Kitui, Kenya.

出版信息

Environ Manage. 2015 Dec;56(6):1538-48. doi: 10.1007/s00267-015-0579-9. Epub 2015 Jul 16.

Abstract

Drylands occupy more than 80% of Kenya's total land mass and contribute immensely to the national economy and society through agriculture, livestock production, tourism, and wild product harvesting. Dryland ecosystems are areas of high climate variability making them vulnerable to the threats of land degradation. Consequently, agropastoralists inhabiting these ecosystems develop mechanisms and technologies to cope with the impacts of climate variability. This study is aimed to; (1) determine what agropastoralists inhabiting a semi-arid ecosystem in Kenya attribute to be the causes and indicators of land degradation, (2) document sustainable land management (SLM) technologies being undertaken to combat land degradation, and (3) identify the factors that influence the choice of these SLM technologies. Vegetation change from preferred indigenous forage grass species to woody vegetation was cited as the main indicator of land degradation. Land degradation was attributed to recurrent droughts and low amounts of rainfall, overgrazing, and unsustainable harvesting of trees for fuelwood production. However, despite the challenges posed by climate variability and recurrent droughts, the local community is engaging in simple SLM technologies including grass reseeding, rainwater harvesting and soil conservation, and dryland agroforestry as a holistic approach combating land degradation and improving their rural livelihoods. The choice of these SLM technologies was mainly driven by their additional benefits to combating land degradation. In conclusion, promoting such simple SLM technologies can help reverse the land degradation trend, improve agricultural production, food security including access to food, and subsequently improve livelihoods of communities inhabiting dryland ecosystems.

摘要

干旱地区占肯尼亚陆地总面积的80%以上,通过农业、畜牧业生产、旅游业和野生产品采集对国家经济和社会做出了巨大贡献。干旱地区生态系统是气候多变性较高的地区,这使其容易受到土地退化的威胁。因此,居住在这些生态系统中的农牧民开发了应对气候变化影响的机制和技术。本研究旨在:(1)确定居住在肯尼亚半干旱生态系统中的农牧民认为土地退化的原因和指标是什么;(2)记录为防治土地退化而采用的可持续土地管理(SLM)技术;(3)确定影响这些SLM技术选择的因素。植被从首选的本土饲草物种转变为木本植被被认为是土地退化的主要指标。土地退化归因于反复出现的干旱和低降雨量、过度放牧以及为生产薪柴而对树木进行不可持续的采伐。然而,尽管气候变化和反复出现的干旱带来了挑战,但当地社区正在采用简单的SLM技术,包括草地补种、雨水收集和土壤保持,以及将旱地农林业作为防治土地退化和改善农村生计的整体方法。这些SLM技术的选择主要是由它们在防治土地退化方面的额外益处驱动的。总之,推广此类简单的SLM技术有助于扭转土地退化趋势,提高农业产量、粮食安全(包括粮食获取),进而改善居住在干旱地区生态系统中的社区的生计。

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