Mario Arturo Ortiz Pérez , José Ramón Hernández Santana , José Manuel Figueroa Mah Eng
Since the second half of the twentieth century, the undertaking of a number of hydraulic and hydroelectric projects has contributed to the disruption of the balance of water and sediment flows in river basins, leading to accelerated processes of progradation and regression in deltaic and other coastal landforms. The retention of sediments in reservoirs has not only resulted in coastal regression, but has severely impacted natural and socio-productive ecosystems as well. In the case of the deltaic plains of the Balsas river in Mexico, the construction of El Infiernillo and La Villita hydroelectric plants in 1964 and 1973, respectively, led to a marked regression of the delta as well as several morphodynamic changes in riverine and coastal areas. The Balsas river basin is located between 17° and 20° North and 97° 30’ and 103° 15’ West, occupying the border between the states of Guerrero and Michoacan along the Mexican Pacific coast. The delta, itself an expression of fluvial sedimentation at the lower course, as the river leaves the mountainous terrain of the southern Sierra Madre, consists of a vast plain representing one third of the total watercourse from north to south, and is divided into two distributary arms leading all the way into the Pacific Ocean, where clear signs of progradation such as cross stratification and valley fills have been detected on the gentle slopes offshore, far away from the coast. This study analyzes the morphodynamic changes taking place at the Balsas river delta front over 66 years between 1943 and 2009, using documentary evidence from official maps (1964, 1980, 1990, 1998, 2001 and 2003), as well as photographic restitution of the coastline using various aerial photographic materials (1943, 1958-59, 1963, 1974, 1976-1977, 1981-1982, 1985, 1996, 2006 and 2009). In the western sector, between 1943 and 1958, prior to the construction of the engineering projects, a significant trend was observed in the progradation of the delta front of the order of +1,103 m, whereas at the apex of the delta the coastline advanced towards the sea at a rate of +73.53 m/year. The most significant changes in the regression of the delta, with maximum regressive rates of -20.5 m/year, occurred during the stage of controlled water flows between 1963 and 1974, due to the closure of reservoirs, after a long phase of natural progradation from 1943 to 1958. In the western part of the delta, the average progradation rate reached -8.8 m/year (1958-2009), in contrast to the progradation rate of +27.47 m/year prior to the construction of the projects. In the eastern part of the delta, on the other hand, regression prevailed during all the periods analyzed, especially between 1963 and 1974, when even the delta coastline lacked effective protection. The maximum linear regression at the coast reached -391.83 m during that period. Later, in 1979, jetties and breakwaters started to be built to reduce the erosive impact of waves. These coastal prot
{"title":"Cambios de la línea costera en el delta del río Balsas, Pacífico mexicano, entre los años 1943-2009","authors":"Mario Arturo Ortiz Pérez , José Ramón Hernández Santana , José Manuel Figueroa Mah Eng","doi":"10.14350/rig.56578","DOIUrl":"https://doi.org/10.14350/rig.56578","url":null,"abstract":"<div><p>Since the second half of the twentieth century, the undertaking of a number of hydraulic and hydroelectric projects has contributed to the disruption of the balance of water and sediment flows in river basins, leading to accelerated processes of progradation and regression in deltaic and other coastal landforms. The retention of sediments in reservoirs has not only resulted in coastal regression, but has severely impacted natural and socio-productive ecosystems as well. In the case of the deltaic plains of the Balsas river in Mexico, the construction of El Infiernillo and La Villita hydroelectric plants in 1964 and 1973, respectively, led to a marked regression of the delta as well as several morphodynamic changes in riverine and coastal areas. The Balsas river basin is located between 17° and 20° North and 97° 30’ and 103° 15’ West, occupying the border between the states of Guerrero and Michoacan along the Mexican Pacific coast. The delta, itself an expression of fluvial sedimentation at the lower course, as the river leaves the mountainous terrain of the southern Sierra Madre, consists of a vast plain representing one third of the total watercourse from north to south, and is divided into two distributary arms leading all the way into the Pacific Ocean, where clear signs of progradation such as cross stratification and valley fills have been detected on the gentle slopes offshore, far away from the coast. This study analyzes the morphodynamic changes taking place at the Balsas river delta front over 66 years between 1943 and 2009, using documentary evidence from official maps (1964, 1980, 1990, 1998, 2001 and 2003), as well as photographic restitution of the coastline using various aerial photographic materials (1943, 1958-59, 1963, 1974, 1976-1977, 1981-1982, 1985, 1996, 2006 and 2009). In the western sector, between 1943 and 1958, prior to the construction of the engineering projects, a significant trend was observed in the progradation of the delta front of the order of +1,103 m, whereas at the apex of the delta the coastline advanced towards the sea at a rate of +73.53 m/year. The most significant changes in the regression of the delta, with maximum regressive rates of -20.5 m/year, occurred during the stage of controlled water flows between 1963 and 1974, due to the closure of reservoirs, after a long phase of natural progradation from 1943 to 1958. In the western part of the delta, the average progradation rate reached -8.8 m/year (1958-2009), in contrast to the progradation rate of +27.47 m/year prior to the construction of the projects. In the eastern part of the delta, on the other hand, regression prevailed during all the periods analyzed, especially between 1963 and 1974, when even the delta coastline lacked effective protection. The maximum linear regression at the coast reached -391.83 m during that period. Later, in 1979, jetties and breakwaters started to be built to reduce the erosive impact of waves. These coastal prot","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.56578","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92121989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alejandro Jalmacin Nené-Preciado , Gaspar González Sansón , Manuel Eduardo Mendoza , Francisco de Asís Silva Bátiz
En los últimos años los humedales costeros de Jalisco han sufrido transformaciones en las confluencias y en las cuencas a las que están asociados. El esquema de la gestión costera sugiere incluir la zona de estudio y las áreas adyacentes en un mismo sistema. Por lo tanto, este trabajo plantea analizar los procesos de cambio de cobertura y uso del suelo en dos cuencas costeras, Arroyo Seco (CAS) y María García (CMG). Se consideraron dos periodos, 1971-1996 y 1996-2014. En total, en la CAS los bosques tropicales perdieron 4 000 ha y en la CMG 7 100 ha. Por otro lado, los usos agropecuarios aumentaron el 55% y el 175%, respectivamente. Hay dos factores detonantes de cambio: en la CMG la construcción del distrito de riego 093 generó importantes pérdidas de bosques tropicales; en la CAS el desarrollo turístico modificó las estructuras del paisaje en las confluencias de la laguna Barra de Navidad. Los principales procesos observados fueron la deforestación y la transición forestal, recuperándose solo el 30% de las superficies de bosques tropicales. Mediante la aplicación de un modelo lineal generalizado se encontró que la deforestación, a diferencia de la transición forestal, está influenciada por valores más bajos de pendientes, altitud, distancia a localidades y a vías de comunicación, pero el modelo que mejor explica este proceso incluye las variables altitud, cuenca y periodo, debido a las características intrínsecas de cada periodo y cada cuenca.
Land cover and land use change (LCLUC) is a spatio-temporal process with a stochastic pattern produced by complex patterns produced by complex interactions among social, physical and biological components. In recent years, the coastal wetlands of Jalisco have undergone transformations in their associated confluences and basins. The coastal management strategy suggests integrating both the study and adjacent areas into the same system. Therefore, this paper proposes to analyze LCLUC processes in two coastal basins, Arroyo Seco (CAS) and María García (CMG). Two periods were considered, 1971-1996 and 1996-2014. Land cover and land use data bases for 1971 and 1996 were obtained by interpretation of scanned photographs on a screen monitor (0.5m x 0.5m pixel resolution) and ortho photographs (2m x 2m pixel resolution), respectively. The data bases for 2014 were obtained by using a combination of digital supervise classification, and interpretation of SPOT fused imagines on a screen monitor (2.5m x 2.5m pixel resolution). In all cases, images were displayed on a monitor screen at a 1:10,000 scale. The data bases were generated according to FOA approach. The overall confidence level of the interpretation of the 2014 land cover and land use (LCLU) maps was 93% for CAS and 92% for CMG. During the study period (43 years), CAS lost 4,000 ha of tropical forests and CMG 7,100 ha. Agricultural use increased by 55% for CAS and 175% for CMG, representing the most important change. In synthesis, th
近年来，哈利斯科海岸湿地在其汇合处和相关盆地发生了变化。海岸管理方案建议将研究区域和邻近区域纳入同一系统。因此，本研究旨在分析阿罗约塞科(CAS)和maria garcia (CMG)两个沿海流域的土地覆盖和土地利用变化过程。本研究的目的是评估在墨西哥和拉丁美洲进行的研究的结果。在CAS中，热带森林总共损失了4000公顷，在gcm中损失了7100公顷。另一方面，农业用地分别增加了55%和175%。有两个触发因素:在CMG, 093灌溉区的建设造成了热带森林的重大损失;在CAS中，旅游开发改变了Barra de Navidad泻湖汇合处的景观结构。观察到的主要过程是森林砍伐和森林过渡，只有30%的热带森林面积恢复。通过实施广泛的线性模型,发现森林砍伐,不同的过渡,这影响价值观较低高度、距离、地方和悬而未决的沟通渠道,但最好解释这一过程模型包括高度变量、流域和时期,由于每一个时期和流域的固有特性。土地覆盖和土地利用变化是一种时空过程，其随机模式是由社会、物理和生物成分之间复杂相互作用所产生的复杂模式所产生的。= =地理= =根据美国人口普查局的数据，该县的总面积为，其中土地和(1.)水。沿海管理战略建议将研究和邻近地区纳入同一系统。因此，本文建议分析Arroyo Seco (CAS)和maria garcia (CMG)两个沿海盆地的LCLUC过程。= =地理= =根据美国人口普查，该镇总面积为，其中土地和(1.1%)水。1971年和1996年的土地覆盖和土地利用数据库分别是通过对屏幕监视器上扫描的照片(0.5m × 0.5m像素分辨率)和ortho照片(2m × 2m像素分辨率)进行解释获得的。2014年的数据基础是通过对屏幕显示器(2.5m × 2.5m像素分辨率)上的点融合图像进行数字监督分类和解释的组合获得的。在所有情况下，图像都以1:10 000的比例显示在显示器上。该数据库是根据《濒危野生动植物种国际贸易公约》方法生成的。CAS对2014年土地覆盖和土地利用(LCLU)图的解释总体信任度为93%，CMG为92%。在43年的研究期间，CAS损失了4000公顷的热带森林和7100公顷的CMG。最重要的变化是，CAS的农业使用量增加了55%，CMG增加了175%。综上所述，观察到的主要过程是毁林和森林过渡，毁林面积恢复了30%。森林砍伐和森林过渡过程约占所有变化的95%。利用广义线性模型(GLM)来确定森林砍伐和森林过渡过程与一些独立变量之间的关系。森林砍伐或森林过渡被用作每个点的响应变量，而海拔、坡度、土壤类型和到道路和地点的距离被用作解释变量。= =地理= =根据美国人口普查局的数据，这个城镇的总面积，其中土地和(1.)水。两个因素就所审议的国内:盆地(with Two水平,号尔登)及期限(with Two水平,P1和P2)。= =地理= =根据美国人口普查局的数据，该镇的土地面积为，其中土地和(1.)水。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.0%)水。有两个“外部”因素同时刺激了CMG灌溉区建设的重大变化，从而导致大面积热带干燥森林和亲水和亲盐植被的丧失。另一方面，在这种情况下，旅游开发的建立导致了Barra de Navidad泻湖汇合处的景观发生了巨大的变化。By applying通用线性Model, we found that激励、unlike低森林transition, is influenced By:价值观slope,投掷集束distance to human settlements和道路,but the Model that explains这些进程,包括诸如变量as best投掷集束、盆地和期限,to the intrinsic每period and basins特征。所选模型为分析中观察到的趋势提供了统计上的支持，但模型没有解释观察到的一些变异性。
{"title":"Cambio de cobertura y uso de suelo en cuencas tropicales costeras del Pacífico central mexicano","authors":"Alejandro Jalmacin Nené-Preciado , Gaspar González Sansón , Manuel Eduardo Mendoza , Francisco de Asís Silva Bátiz","doi":"10.14350/rig.56770","DOIUrl":"https://doi.org/10.14350/rig.56770","url":null,"abstract":"<div><p>En los últimos años los humedales costeros de Jalisco han sufrido transformaciones en las confluencias y en las cuencas a las que están asociados. El esquema de la gestión costera sugiere incluir la zona de estudio y las áreas adyacentes en un mismo sistema. Por lo tanto, este trabajo plantea analizar los procesos de cambio de cobertura y uso del suelo en dos cuencas costeras, Arroyo Seco (CAS) y María García (CMG). Se consideraron dos periodos, 1971-1996 y 1996-2014. En total, en la CAS los bosques tropicales perdieron 4 000 ha y en la CMG 7 100 ha. Por otro lado, los usos agropecuarios aumentaron el 55% y el 175%, respectivamente. Hay dos factores detonantes de cambio: en la CMG la construcción del distrito de riego 093 generó importantes pérdidas de bosques tropicales; en la CAS el desarrollo turístico modificó las estructuras del paisaje en las confluencias de la laguna Barra de Navidad. Los principales procesos observados fueron la deforestación y la transición forestal, recuperándose solo el 30% de las superficies de bosques tropicales. Mediante la aplicación de un modelo lineal generalizado se encontró que la deforestación, a diferencia de la transición forestal, está influenciada por valores más bajos de pendientes, altitud, distancia a localidades y a vías de comunicación, pero el modelo que mejor explica este proceso incluye las variables altitud, cuenca y periodo, debido a las características intrínsecas de cada periodo y cada cuenca.</p></div><div><p>Land cover and land use change (LCLUC) is a spatio-temporal process with a stochastic pattern produced by complex patterns produced by complex interactions among social, physical and biological components. In recent years, the coastal wetlands of Jalisco have undergone transformations in their associated confluences and basins. The coastal management strategy suggests integrating both the study and adjacent areas into the same system. Therefore, this paper proposes to analyze LCLUC processes in two coastal basins, Arroyo Seco (CAS) and María García (CMG). Two periods were considered, 1971-1996 and 1996-2014. Land cover and land use data bases for 1971 and 1996 were obtained by interpretation of scanned photographs on a screen monitor (0.5m x 0.5m pixel resolution) and ortho photographs (2m x 2m pixel resolution), respectively. The data bases for 2014 were obtained by using a combination of digital supervise classification, and interpretation of SPOT fused imagines on a screen monitor (2.5m x 2.5m pixel resolution). In all cases, images were displayed on a monitor screen at a 1:10,000 scale. The data bases were generated according to FOA approach. The overall confidence level of the interpretation of the 2014 land cover and land use (LCLU) maps was 93% for CAS and 92% for CMG. During the study period (43 years), CAS lost 4,000 ha of tropical forests and CMG 7,100 ha. Agricultural use increased by 55% for CAS and 175% for CMG, representing the most important change. In synthesis, th","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.56770","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92121990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The San Luis Potosí plateau is located in the northern portion of the state; it comprises 15 municipalities with a territorial extension of 28122 km 2. This area includes the municipalities of Cedral, Matehuala and Villa de la Paz, which stand out for their economic development throughout history. Such is the case of trade that has made of Matehuala an important regional distribution center, supplemented by agricultural activities as key elements of the economy of the municipality of El Cedral, and mining, which in the colonial collection of some relevance in Villa of Peace, where copper is mined, lead, silver and gold.
The incorporation of new territories to tourism, as part of a national policy, has allowed the economic diversification in arid zones of Mexico.
These municipalities have natural and cultural resources that are suitable for tourism development, based on their physical-geographical attributes, the cultural heritage from pre-hispanic groups, architecture and gastronomy. The failure to recognize these natural and cultural resources, as well as the little interest in tourism development on the part of local governments and local inhabitants, has restrained the diversification of this activity.
Therefore, the objective of this research is to evaluate the tourism resources available in these municipalities based on the multicriteria evaluation methodology. This methodology comprises a set of techniques which allow estimating various alternatives based on various criteria and priorities, and assessing those sites with the greatest tourism development potential, as well as the intrinsic characteristics of the activity, such as accessibility, equipment and infrastructure, for the identification of tourist attractions. Interviews were carried out with the governments of the municipalities involved, the Ministry of Tourism of the State of San Luis Potosi, and with the different social stakeholders of the localities studied.
As a result of this methodological process, 10 areas with tourism potential were identified based on the detection of suitable sites, to be included in a tourist corridor that would include the most important attributes of the region, where there is an emerging tourism potential that would boost the local and regional tourist economy.
In this sense, it can be stated that tourism will be beneficial for the municipalities to the extent that it meets the needs of tourists, is economically profitable, socially fair for the local community and environmentally friendly. The proposal of the corridor, in the planning stage, incorporates environmental, social and economic aspects and implications that foster the mobilization of goods, services, merchandise and tourists in the area, and promote the political integration and the participation of the stakeholders involved.
圣路易斯Potosí高原位于该州的北部;它包括15个市，领土延伸28122平方公里。该地区包括Cedral, Matehuala和Villa de la Paz等城市，这些城市在历史上因其经济发展而脱颖而出。这就是贸易的情况，使马特华拉成为一个重要的区域分销中心，并辅之以农业活动，作为El Cedral市经济的关键要素，以及采矿，在和平别墅的殖民收藏中有一些相关性，在那里开采铜，铅，银和金。将新领土纳入旅游业，作为国家政策的一部分，使墨西哥干旱地区的经济多样化。这些城市拥有适合旅游业发展的自然和文化资源，基于其自然地理属性、前西班牙群体的文化遗产、建筑和美食。由于没有认识到这些自然和文化资源，以及地方政府和当地居民对旅游发展兴趣不大，限制了这一活动的多样化。因此，本研究的目的是基于多标准评价方法对这些城市的旅游资源进行评价。这种方法包括一套技术，可以根据各种标准和优先事项估计各种备选办法，并评估具有最大旅游发展潜力的地点，以及活动的内在特征，例如可达性、设备和基础设施，以确定旅游景点。与相关市政当局的政府、圣路易斯波托西州旅游部以及所研究地区的不同社会利益相关者进行了访谈。通过这一方法过程，在发现合适地点的基础上确定了10个具有旅游潜力的地区，这些地区将被纳入旅游走廊，其中将包括该地区最重要的属性，这些地区的旅游潜力正在显现，将促进当地和区域旅游经济。从这个意义上说，可以这样说，旅游业对市政当局是有益的，因为它满足旅游者的需要，在经济上有利可图，对当地社区社会公平，对环境友好。在规划阶段，该走廊的建议将环境、社会和经济方面及其影响纳入其中，以促进该地区货物、服务、商品和游客的动员，并促进政治一体化和相关利益攸关方的参与。
{"title":"Evaluación de recursos naturales y culturales para la creación de un corredor turístico en el altiplano de San Luis Potosí, México","authors":"Gustavo Adolfo Vázquez Martínez , Valente Vázquez Solís","doi":"10.14350/rig.56575","DOIUrl":"https://doi.org/10.14350/rig.56575","url":null,"abstract":"<div><p>The San Luis Potosí plateau is located in the northern portion of the state; it comprises 15 municipalities with a territorial extension of 28122 km 2. This area includes the municipalities of Cedral, Matehuala and Villa de la Paz, which stand out for their economic development throughout history. Such is the case of trade that has made of Matehuala an important regional distribution center, supplemented by agricultural activities as key elements of the economy of the municipality of El Cedral, and mining, which in the colonial collection of some relevance in Villa of Peace, where copper is mined, lead, silver and gold.</p><p>The incorporation of new territories to tourism, as part of a national policy, has allowed the economic diversification in arid zones of Mexico.</p><p>These municipalities have natural and cultural resources that are suitable for tourism development, based on their physical-geographical attributes, the cultural heritage from pre-hispanic groups, architecture and gastronomy. The failure to recognize these natural and cultural resources, as well as the little interest in tourism development on the part of local governments and local inhabitants, has restrained the diversification of this activity.</p><p>Therefore, the objective of this research is to evaluate the tourism resources available in these municipalities based on the multicriteria evaluation methodology. This methodology comprises a set of techniques which allow estimating various alternatives based on various criteria and priorities, and assessing those sites with the greatest tourism development potential, as well as the intrinsic characteristics of the activity, such as accessibility, equipment and infrastructure, for the identification of tourist attractions. Interviews were carried out with the governments of the municipalities involved, the Ministry of Tourism of the State of San Luis Potosi, and with the different social stakeholders of the localities studied.</p><p>As a result of this methodological process, 10 areas with tourism potential were identified based on the detection of suitable sites, to be included in a tourist corridor that would include the most important attributes of the region, where there is an emerging tourism potential that would boost the local and regional tourist economy.</p><p>In this sense, it can be stated that tourism will be beneficial for the municipalities to the extent that it meets the needs of tourists, is economically profitable, socially fair for the local community and environmentally friendly. The proposal of the corridor, in the planning stage, incorporates environmental, social and economic aspects and implications that foster the mobilization of goods, services, merchandise and tourists in the area, and promote the political integration and the participation of the stakeholders involved.</p></div>","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.56575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92110537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two of the biggest challenges of humanity are to achieve global food security by reducing environmental impacts, and provide healthy diets for all people. In this paper, we discuss the complexity involved in designing solutions on food security. We focus on Mexico due to the heterogeneity of the country in relation to socioeconomic, cultural and ecological factors. First, we discuss the need to analyze food security by integrating the sustainability of both food production and food consumption. Then we describe the Mexican situation by analyzing five food production-consumption systems that illustrate the diversity of agricultural systems and dietary patterns. This analysis reveals that the pathway to achieve food security in Mexico should include sustainable food production systems and dietary patterns. The solution should be site-specific considering the ecological, socioeconomic and cultural situation, so an integrative geographical perspective is needed with a bottom-up approach; in this way, food security for future generation will not be compromised. To reach this, transversal policies involving the agricultural, health, environmental and federal agencies are required.
{"title":"Rethinking Food Security in Mexico: Discussing the Need for Sustainable Transversal Policies Linking Food Production and Food Consumption","authors":"M.J. Ibarrola-Rivas , L. Galicia","doi":"10.14350/rig.57538","DOIUrl":"https://doi.org/10.14350/rig.57538","url":null,"abstract":"<div><p>Two of the biggest challenges of humanity are to achieve global food security by reducing environmental impacts, and provide healthy diets for all people. In this paper, we discuss the complexity involved in designing solutions on food security. We focus on Mexico due to the heterogeneity of the country in relation to socioeconomic, cultural and ecological factors. First, we discuss the need to analyze food security by integrating the sustainability of both food production and food consumption. Then we describe the Mexican situation by analyzing five food production-consumption systems that illustrate the diversity of agricultural systems and dietary patterns. This analysis reveals that the pathway to achieve food security in Mexico should include sustainable food production systems and dietary patterns. The solution should be site-specific considering the ecological, socioeconomic and cultural situation, so an integrative geographical perspective is needed with a bottom-up approach; in this way, food security for future generation will not be compromised. To reach this, transversal policies involving the agricultural, health, environmental and federal agencies are required.</p></div>","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.57538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92120069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"VI Coloquio Internacional de Geografía Ambiental: en el décimo aniversario de la creación del Centro de Investigaciones en Geografía Ambiental de la UNAM. Morelia, Michoacán, 26 y 27 de septiembre 2017.","authors":"Pedro Sergio Urquijo Torres","doi":"10.14350/rig.59587","DOIUrl":"https://doi.org/10.14350/rig.59587","url":null,"abstract":"","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.59587","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92076050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Trabajo de campo dendrocronológico para estudios de geografía física. Experiencias en los volcanes popocatépetl e iztaccíhuatl, 2006-2017","authors":"Osvaldo Franco-Ramos, Lorenzo Vázquez Selem","doi":"10.14350/rig.59574","DOIUrl":"https://doi.org/10.14350/rig.59574","url":null,"abstract":"","PeriodicalId":39866,"journal":{"name":"Investigaciones Geograficas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14350/rig.59574","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91977904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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