Agroforestry Based Ecosystem Services

As a dynamic interface between agriculture and forestry, agroforestry has only recently been formally recognized as a relevant part of land use with 'trees outside forest' in important parts of the world-but not everywhere yet. The Sustainable Development Goals have called attention to the need for the multifunctionality of landscapes that simultaneously contribute to multiple goals. In the UN decade of landscape restoration, as well as in response to the climate change urgency and biodiversity extinction crisis, an increase in global tree cover is widely seen as desirable, but its management by farmers or forest managers remains contested. Agroforestry research relates tree-soil-crop- livestock interactions at the plot level with landscape-level analysis of social-ecological systems and efforts to transcend the historical dichotomy between forest and agriculture as separate policy domains. An 'ecosystem services' perspective quantifies land productivity, flows of water, net greenhouse gas emissions, and biodiversity conservation, and combines an 'actor' perspective (farmer, landscape manager) with that of 'downstream' stakeholders (in the same watershed, ecologically conscious consumers elsewhere, global citizens) and higher-level regulators designing land-use policies and spatial zoning.

As a dynamic interface between agriculture and forestry, agroforestry has only recently been formally recognized as a relevant part of land use with 'trees outside forest' in important parts of the world--but not everywhere yet. The Sustainable Development Goals have called attention to the need for the multifunctionality of landscapes that simultaneously contribute to multiple goals. In the UN decade of landscape restoration, as well as in response to the climate change urgency and biodiversity extinction crisis, an increase in global tree cover is widely seen as desirable, but its management by farmers or forest managers remains contested. Agroforestry research relates tree-soil-crop-livestock interactions at the plot level with landscape-level analysis of social-ecological systems and efforts to transcend the historical dichotomy between forest and agriculture as separate policy domains. An 'ecosystem services' perspective quantifies land productivity, flows of water, net greenhouse gas emissions, and biodiversity conservation, and combines an 'actor' perspective (farmer, landscape manager) with that of 'downstream' stakeholders (in the same watershed, ecologically conscious consumers elsewhere, global citizens) and higher-level regulators designing land-use policies and spatial zoning.

This book is a state-of-the-art compilation of the latest information on ecosystem services of agroforestry. The last two decades have seen a surge in literature on the ecosystem services of sustainable agriculture practices, including that of agroforestry; however, compilation and synthesis of such information from agroforestry have been limited. This book fills that void by bringing in a number of experts from around the world. In addition to presenting the multiple dimensions of ecosystem services provided by major agroforestry practices, the book also offers case studies from both tropical and temperate regions of the world. Information from this book can be used to design land management practices for climate change mitigation, ecosystem benefits, agricultural productivity and sustainability, and for survival and profitability of family farms and to conserve biodiversity. While synthesizing information of the biophysical aspects of ecosystem services, the book also outlines the socioeconomic and policy dimensions, including appropriate incentive models to enhance adoption of agroforestry so that society at large can enjoy these important benefits

Agroforestry is a type of land management system where trees or shrubs are planted around or surrounding the crops or pastureland. Such type of land management helps in producing a variety of products such as fruits, wood products, pharmaceuticals and other valuable products that can be traded commercially. It ensures long-term sustainability of agriculture. Some of its other benefits include improved farmer livelihoods through wealth creation, higher yields from staple food crops, carbon sequestration, increased biodiversity, and enhanced soil structure and health. Agroforestry helps blend forestry and farming, which helps restore the land by reducing soil erosion and regulating the water accessibility to restore the land. The practice of agroforestry leads to ecosystem services, which refers to the human benefits apart from an increase in farm produce. Agroforestry-based ecosystem services help in improving agricultural sustainability by ensuring better usage of fertilizers, enhanced ground cover, improved insect resistance, and weed avoidance. This book elucidates the concepts and innovative models around prospective developments with respect to agroforestry-based ecosystem services and environmental benefits of agroforestry. It will also provide interesting topics for research, which interested readers can take up.

Planting trees in the agricultural landscape, in the form of establishing agroforestry systems, has a significant role to play in potentially improving ecosystem services, such as increased biodiversity, reduced soil erosion, increased soil carbon storage, improved food security and nutrition, and reduced greenhouse gas emissions. While the role of trees in agroforestry systems in improving ecosystem services has been researched, studies in new systems/regions and new agroforestry system designs are still emerging. This Special Issue includes selected papers presented at the 4th World Congress on Agroforestry, Montpellier, France 20–22 May 2019, and other volunteer papers. The scope of articles includes all aspects of agroforestry systems.

Agricultural systems are no longer evaluated solely on the basis of the food they provide, but also on their capacity to limit impacts on the environment, such as soil conservation, water quality and biodiversity conservation, as well as their contribution to mitigating and adapting to climate change. In order to cope with these multiple service functions, they must internalize the costs and benefits of their environmental impact. Payments for ecosystem services are hoped to encourage and promote sustainable practices via financial incentives. The authors show that while the principle is straightforward, the practice is much more complicated. Whereas scenic beauty and protection of water sources provide benefits to the local population, carbon sequestration and biodiversity conservation can be considered international public goods, rendering potential payment schemes more complex. Few examples exist where national or international bodies have been able to set up viable mechanisms that compensate agricultural systems for the environmental services they provide. However this book provides several examples of successful programs, and aims to transfer them to other regions of the world. The authors show that a product can be sold if it is clearly quantified, there exists a means to determine the service's values, and there is a willing buyer. The first two sections of the book present methodological issues related to the quantification and marketing of ecosystem services from agriculture, including agroforestry. The third and final section presents case studies of practical payments for ecosystem services and experiences in Central and South America, and draws some lessons learnt for effective and sustainable development of ecosystem services compensation mechanisms.

Agroforestry refers to a land-use management system wherein trees or shrubs are grown among crops or pastureland. Agroforestry-based ecosystem services refer to human benefits that are achieved beyond the farm scale as a result of farm trees' interaction with soil and water, carbon storage, and biodiversity. This intentional combination of agriculture and forestry has multiple benefits, such as enhanced yields from staple food crops, enhanced farmer livelihoods from income generation, increased biodiversity, improved soil structure and health, reduced erosion, and carbon sequestration. The policies that promote agroforestry-based ecosystem services result in on-farm benefits, landscape and watershed benefits, and national and global benefits. This book is compiled in such a manner, that it will provide in-depth knowledge about agroforestry-based ecosystem services. It will also provide interesting topics for research, which interested readers can take up. The book is a vital tool for all researching or studying agroforestry.

Agroforestry systems are believed to provide a number of ecosystem services; however, until recently evidence in the agroforestry literature supporting these perceived benefits has been lacking. This volume brings together a series of papers from around the globe to address recent findings on the ecosystem services and environmental benefits provided by agroforestry. Specifically, this volume examines four major ecosystem services and environmental benefits: (1) carbon sequestration, (2) biodiversity conservation, (3) soil enrichment and (4) air and water quality. Past and present evidence clearly indicates that agroforestry, as part of a multifunctional working landscape, can be a viable land-use option that, in addition to alleviating poverty, offers a number of ecosystem services and environmental benefits. This realization should help promote agroforestry and its role as an integral part of a multifunctional working landscape the world over. The book should be particularly useful to students, professionals, researchers and policy makers involved in natural resource management, agroforestry, biodiversity conservation, and environmental management. Reprinted from Agroforestry Systems, Volume 76, No. 1 (2009)