scholarly journals Simulation of agro-ecosystem service value in oasis area of lower reaches of Tarim River

2021 ◽  
Author(s):  
hongwei li ◽  
yaning Chen
Keyword(s):  
Land Cover ◽  
Ecosystem Service ◽  
Tarim River ◽  
Ecosystem Service Value ◽  
Simulation Accuracy ◽  
Barren Land ◽  
Benchmark Scenario ◽  
Service Value ◽  
Inland River ◽  
Oasis Area

Based on the relationship between the service value of each component of agro-ecosystem and its corresponding land cover, the service value of agro-ecosystem in oasis area of lower reaches of Tarim River was analyzed. Using the land cover data of 2000, 2010 and 2020, and setting two scenarios in the FLUS model to simulate the land cover change of the study area in 2030. According to the forecast results of land cover, the the value of agro-ecological service was calculated and the sensitivity was analyzed. Results showed the following: (1) The Kappa coefficients and overall accuracy of 2010 land cover models simulated by FLUS are 0.8429 and 92.55% , indicating that the model has appropriate simulation accuracy. (2) The proportion of farmland, grassland, water body and artificial surface increased from 4.28%, 22.26%, 2.18% and 1.16% in 2000 to 6.63%, 25.86%, 10.96% and 0.48% in 2030 benchmark scenario, respectively. On the contrary, the shrub land and barren land decreased from 1.07% and 70.75% in 2000 to 0.7% and 55.44% in 2030 benchmark scenario, respectively.(3) The agro-ecosystem service value of benchmark scenario and ecological protection scenario are CN¥6.781×109 and CN¥6.937×109 in 2030, respectively. The practice has proved that the ecological water conveyance project is very necessary to improve the agricultural ecological environment in oasis area of lower reaches of Tarim River. This study can provide reference for the research on the agro-ecosystem service value of oases in inland river basins of China and Central Asia.

scholarly journals Variations in ecosystem service value in response to land use/land cover changes in Central Asia over 1995-2035

2019 ◽  
Author(s):  
Jiangyue Li ◽  
Hongxing Chen ◽  
Chi Zhang ◽  
Tao Pan
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Central Asia ◽  
Ecosystem Service ◽  
Water Bodies ◽  
Land Cover Changes ◽  
Land Use Land Cover ◽  
Ecosystem Service Value ◽  
Rapid Urbanization ◽  
Service Value

Acute farmland expansion and rapid urbanization in Central Asia have accelerated land use/land cover changes, which has significant effect onecosystemservice. However, the spatio-temporal changes in ecosystem service values in Central Asia are not well understood. Here, based on land use products with 300-m resolution for the years of 1995, 2005 and 2015 and transfer methodology, we predicted LUCC for 2025 and 2035 using CA-Markov, assessed changes in ecosystem service value in response to LUCC dynamics, and explored the elasticity for the response of ESV to LULC changes. We found significant expansions of cropland and urban and shrinking of water bodies and bare land during 1995-2035. Overall ESVs had an increasing trend from 1995-2035, which was mainly due to the increasing cropland and construction land. The combined valueofecosystemservices of cropland, grassland, water bodies accounted for over 90% of the total ESVs. However, LULC analysis showed that the area of water body reduced by 21.80% from 1995 to 2015 and continued to decrease by 21.14% from 2015 to 2035, indicating that approximately 63.37 billion US$ of ESVs lost in Central Asia. Biodiversity, food production and water regulation were major service functions, accounting for 80.52% of the total ESVs . Our results demonstrated that theeffective land-usepolicies should be made to control farmland expansion and protect water bodies, grassland and forestland for better sustainable ecosystem services.

Variation of the floodplain forest ecosystem service value in the lower reaches of Tarim River, China

2017 ◽  
Vol 29 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Zulpiya Mamat ◽  
Ümüt Halik ◽  
Maierdang Keyimu ◽  
Ayjamal Keram ◽  
Kalbinur Nurmamat
Keyword(s):  
Forest Ecosystem ◽  
Ecosystem Service ◽  
Floodplain Forest ◽  
Tarim River ◽  
Ecosystem Service Value ◽  
Service Value ◽  
Forest Ecosystem Service

Changes of Value of Ecosystem Services and its Driving Forces in the Lower Reaches of the Tarim River

2012 ◽  
Vol 260-261 ◽  
pp. 1030-1034 ◽  
Author(s):  
Xiang Huang ◽  
Wei Hong Li ◽  
Jian Xin Ma
Keyword(s):  
Ecosystem Services ◽  
Ecosystem Service ◽  
Driving Forces ◽  
Image Data ◽  
Tarim River ◽  
Ecosystem Structure ◽  
Value Assessment ◽  
Ecosystem Service Value ◽  
Service Value ◽  
The Tarim River

In this paper, we used TM image data in the lower reaches of the Tarim River as well as ecosystem service value assessment methods, and assessed the change of regional land use/ cover and analyzed its ecosystem service value, and discussed the driving forces of the change factors. The results show that : the study area is mainly grassland and desert grasslands accounted for more than 43% , the desert about 32% , less than 6% of the forest area , waters and wetlands area , less than 1% of the total area, which mean that the area is mainly the oasis agriculture , desertification serious water shortages. Since 2000, the , the ecological restoration project significantly effective under the emergency water conveyance on the lower reaches of the Tarim River, woodland restoration and water area increased , the desert area has decreased. GDP continued to increase from 2000 to 2005, the value of ecosystem services greatly reduce. In a shorter time scale, agricultural development and human activity are the dominant factors of the transfer of the value of ecosystem structure adjustment and service functions in the study area.

scholarly journals Analysis of Ecosystem Service Value Change Using a Land Cover Map

2016 ◽  
Vol 27 (spc) ◽  
pp. 681-688 ◽  
Author(s):  
Meejeong Park ◽  
Jeong Bae Jeon ◽  
Jin Ah Choi ◽  
Eun Ja Kim ◽  
Chang Su Im
Keyword(s):  
Land Cover ◽  
Ecosystem Service ◽  
Value Change ◽  
Ecosystem Service Value ◽  
Service Value ◽  
Land Cover Map

scholarly journals Do Ecosystem Service Value Increase and Environmental Quality Improve due to Large–Scale Ecological Water Conveyance in an Arid Region of China?

2019 ◽  
Vol 11 (23) ◽  
pp. 6586 ◽  
Author(s):  
Xiyi Wang ◽  
Shuzhen Peng ◽  
Hongbo Ling ◽  
Hailiang Xu ◽  
Tingting Ma
Keyword(s):  
Land Use ◽  
Environmental Quality ◽  
Ecosystem Service ◽  
Ecological Environment ◽  
Tarim River ◽  
Ecosystem Service Value ◽  
Service Value ◽  
The Tarim River ◽  
Water Conveyance ◽  
Ecological Water Conveyance

With the rapid development of the economy and the intensification of human activities, ecological systems have been degraded, especially in arid areas. The lower reaches of the Tarim River represent a typical arid area in China. Since 2000, the Chinese government has been heavily investing in the protection and restoration of the natural ecological environment of the lower reaches of the Tarim River. In this study, we aimed to resolve two key scientific issues: (1) reveal the changing characteristics of land-use in the region and identify the changes in ecosystem service value caused by these land-use changes and (2) evaluate whether the environmental quality has improved or worsened. The objective of this study is to verify whether the ecological water conveyance project promotes an increase in the ecosystem service value, with an improvement in the ecological environment, to thereby provide references for the evaluated effects of ecological water conveyance for the management of water resources. In this way, economic development can support environmental protection. Thus, the economy can be sustainably developed. Hence, based on the remote sensing data of land-use in 1990, 2000, 2010, and 2016, with the value coefficients proposed by Constanza in 1997 and changing characteristics in the land-use, the ecological service value, and environmental conditions from 1990 to 2016 were analysed. According to our results, from 1990 to 2016, the ecosystem service value has increased substantially, indicating that the benefits of ecological water conveyance were significant. The environmental condition index increased by 21.14%, showing that the ecological environment has improved. However, the environmental quality remained low. In the future, we should formulate plans for reasonable land-use that control the replacement of woodlands and grasslands with farmlands and construction. The results of this study provide a scientific basis and practical guide for restoring inland river ecosystems in arid regions.

scholarly journals Optimizing Land Use and Land Cover Allocation for Flood Mitigation Using Land Use Change and Hydrological Models with Goal Programming, Chaiyaphum, Thailand

Land ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1317
Author(s):  
Athiwat Phinyoyang ◽  
Suwit Ongsomwang
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Land Cover ◽  
Goal Programming ◽  
Ecosystem Service ◽  
Surface Runoff ◽  
Flood Mitigation ◽  
Hydrological Models ◽  
Ecosystem Service Value ◽  
Service Value

Floods represent one of the most severe natural disasters threatening the development of human society worldwide, including in Thailand. In recent decades, Chaiyaphum province has experienced a problem with flooding almost every year. In particular, the flood in 2010 caused property damage of 495 million Baht, more than 322,000 persons were affected, and approximately 1046.4 km2 of productive agricultural area was affected. Therefore, this study examined how to optimize land use and land cover allocation for flood mitigation using land use change and hydrological models with optimization methods. This research aimed to allocate land use and land cover (LULC) to minimize the surface for flood mitigation in Mueang Chaiyaphum district, Chaiyaphum province, Thailand. The research methodology consisted of six stages: data collection and preparation, LULC classification, LULC prediction, surface runoff estimation, the optimization of LULC allocation for flood mitigation and mapping, and economic and ecosystem service value evaluation and change. According to the results of the optimization and mapping of suitable LULC allocation to minimize surface runoff for flood mitigation in dry, normal, and wet years using goal programming and the CLUE-S model, the suitable LULC allocation for flood mitigation in 2049 under a normal year could provide the highest future economic value and gain. In the meantime, the suitable LULC allocation for flood mitigation in 2049 under a drought year could provide the highest ecosystem service value and gain. Nevertheless, considering future economic and ecosystem service values and changes with surface runoff reduction, the most suitable LULC allocation for flood mitigation is a normal year. Consequently, it can be concluded that the derived results of this study can be used as primary information for flood mitigation project implementation. Additionally, the presented conceptual framework and research workflows can be used as a guideline for government agencies to examine other flood-prone areas for flood mitigation in Thailand.

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