Post-irrigation degradation of land and environmental resources in the Harran plain, southeastern Turkey

Bilgili, Ali Volkan; Yeşilnacar, İrfan; Kotera, Akihiko; Nagano, Takanori; Aydemir, Aydın; Hızlı, Hüseyin Sefa; Bilgili, Ayşin

doi:10.1007/s10661-018-7019-2

Cited by 27 publications

(11 citation statements)

References 15 publications

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“…Our findings document the transformation of a rainfed agro-pastoralist system into an intensively used landscape through the expansion and intensification of irrigated agriculture. This drastic change was accompanied by a plethora of social, ecological, and economic externalities (Bilgen, 2018b;Bilgili et al, 2018;Özerol & Bressers, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Economic incentives to switch to water-saving methods are lacking, since the quantity of water used at the farm level is neither monitored nor incorporated into the irrigation fee. As a consequence, irrigation water use has been excessive and, combined with insufficient drainage, drastically raised the extent of saline lands in the GAP region (Bilgili et al, 2018;Kendirli et al, 2005). Our maps provide opportunities to assess cropland use history over three decades at 30 m spatial resolution and can thus serve as a spatially detailed indicator for soil salinization risk.…”

Section: Discussionmentioning

confidence: 99%

“…For instance, our maps document that Şanlıurfa´s Harran plain has been used since the onset of the GAP project with rising intensity. The risk for environmental degradation is likely aggravated in this particularly dry region, and many studies already documented increasing soil salinity due to excessive irrigation (Altinbilek & Tortajada, 2012;Bahçeci & Nacar, 2009;Bilgili et al, 2018;Çullu, 2003).…”

Section: Discussionmentioning

confidence: 99%

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Landsat time series reveal simultaneous expansion and intensification of irrigated dry season cropping in Southeastern Turkey

Rufin

Müller

Schwieder

et al. 2021

Journal of Land Use Science

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Long-term monitoring of the extent and intensity of irrigation systems is needed to track crop water consumption and to adapt land use to a changing climate. We mapped the expansion and changes in the intensity of irrigated dry season cropping in Turkey´s Southeastern Anatolia Project annually from 1990 to 2018 using Landsat time series. Irrigated dry season cropping covered 5,779 km² (± 479 km²) in 2018, which represents an increase of 617% over the study period. Dry season cropping was practiced on average every second year, but spatial variability was pronounced. Increases in dry season cropping frequency were observed on 40% of the studied croplands. The presented maps enable the identification of land use intensity hotspots at 30 m spatial resolution, and can thus aid in assessments of water consumption and environmental degradation. All maps are openly available for further use at

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Landsat time series reveal simultaneous expansion and intensification of irrigated dry season cropping in Southeastern Turkey

Rufin

Müller

Schwieder

et al. 2021

Journal of Land Use Science

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“…The current study was conducted in farmer fields in Harran plain, Şanlıurfa province, Turkey (36°52'39.0"N, 39°02'02.0"E; 400-450 m elevation). Harran plain has approximately 150.000 hectares irrigated area in recent years [29]. Mostly cotton and two different maize crop (main and second) are produced in the Harran plains.…”

Section: Study Areamentioning

confidence: 99%

Population dynamics and parasitism rate of leafhopper species (Hemiptera: Cicadellidae) in maize (Zea mays L.) crop

Atmaca¹,

Mamay²,

Mutlu³

2021

World J. Adv. Res. Rev.

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Maize is an important crop in Turkey that is infested by various leafhopper species during the whole season. Monitoring population dynamics and parasitism rate of these species would help to devise effective management practices. This study determined population dynamics of four leafhopper species, i.e., Zyginidia sohrab Zachvatkin, 1947, Empoasca decipiens Paoli, 1930 and Psammotettix striatus (Linnaeus, 1758) in second maize crop. Similarly, population dynamics and parasitism rate of egg parasitoid (Anagrus atomus) of these leafhopper species was also studied through July to November 2018 in Akçakale, Harran and Haliliye districts of Şanlıurfa province, Turkey. Population density of all species significantly varied among studied districts with the highest density of A. atomus recorded on 7 September with 30 adults/trap in Haliliye district. The parasitism rate on Z. sohrab eggs was 78% in Akçakale, 82% in Harran and 63% in Haliliye district. It was followed by E. decipiens with 18% in Akçakale, 14% in Harran and 32% in Haliliye. The highest population density of Z. sohrab was recorded on 21 September in Akçakale (4328 adults/trap), Harran (3920 adults/trap) and Haliliye (4592 adults/trap). Similarly, E. decipiens had the highest (1216 adults/trap) population density on 10 August in Harran, 12 October (368 adult/trap) in Akçakale and 17 August (2184 adults/trap) in Haliliye. Population dynamics of leafhoppers and their egg parasitoid coincided with each other. The parasitism rate was lower than other provinces in Turkey which is owed to high pesticide use in Şanlıurfa province. Therefore, chemical control should be decided by considering population development of beneficial insect species.

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“…Since cotton and its support schemes can be very profitable for farmers, there are several environmental problems. Due to the intensive production of cotton and its monoculture farming, cotton-growing areas reduce the lands’ organic matter over time, causing soil degradation, the clay content of the soil to increase, and the groundwater level to rise, resulting increased salinity of the soil (Bilgili et al, 2017 , 2018 ; Çullu et al, 2009 ; Li et al, 2020 ; Reeves, 1997 ). Due to the salinity of cotton fields, these areas become unsuitable for any agricultural practices.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous impact of agricultural support policies: evidence from Turkey

Demirdöğen

Olhan

Hasdemir

2021

Environ Dev Sustain

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Post-irrigation degradation of land and environmental resources in the Harran plain, southeastern Turkey

Cited by 27 publications

References 15 publications

Landsat time series reveal simultaneous expansion and intensification of irrigated dry season cropping in Southeastern Turkey

Landsat time series reveal simultaneous expansion and intensification of irrigated dry season cropping in Southeastern Turkey

Population dynamics and parasitism rate of leafhopper species (Hemiptera: Cicadellidae) in maize (Zea mays L.) crop

Heterogeneous impact of agricultural support policies: evidence from Turkey

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