Investigaciones Geograficas最新文献

{"title":"Cambios de la línea costera en el delta del río Balsas, Pacífico mexicano, entre los años 1943-2009","authors":"Mario Arturo Ortiz Pérez ,&nbsp;José Ramón Hernández Santana ,&nbsp;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}

{"title":"Anne Buttimer (Cork, 1938 - Dublin, 2017): Obituary","authors":"Federico Ferretti BA, MA, PhD","doi":"10.14350/rig.59582","DOIUrl":"https://doi.org/10.14350/rig.59582","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.59582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92120068","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":"Cambio de cobertura y uso de suelo en cuencas tropicales costeras del Pacífico central mexicano","authors":"Alejandro Jalmacin Nené-Preciado ,&nbsp;Gaspar González Sansón ,&nbsp;Manuel Eduardo Mendoza ,&nbsp;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}

{"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 ,&nbsp;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}

{"title":"Rethinking Food Security in Mexico: Discussing the Need for Sustainable Transversal Policies Linking Food Production and Food Consumption","authors":"M.J. Ibarrola-Rivas ,&nbsp;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":"","authors":"Adriana Alejandra Ávila Farfán","doi":"10.14350/rig.59580","DOIUrl":"https://doi.org/10.14350/rig.59580","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.59580","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91977901","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":"","authors":"Mariana Favila Vázquez","doi":"10.14350/rig.59575","DOIUrl":"https://doi.org/10.14350/rig.59575","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.59575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91977903","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,&nbsp;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}

{"title":"","authors":"Arlinda Garcia Coll","doi":"10.14350/rig.59578","DOIUrl":"https://doi.org/10.14350/rig.59578","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.59578","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92120066","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}