Gansu Research Institute for Water Conservancy

Lanzhou, China

Gansu Research Institute for Water Conservancy

Lanzhou, China

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Wang L.,Xinjiang Institute of Ecology and Geography | Wang L.,University of Chinese Academy of Sciences | Sun D.,Xinjiang Institute of Ecology and Geography | Sun D.,Gansu Research Institute for Water Conservancy | And 4 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2011

Plant architecture is defined as spatial arrangement of plant body such as the branching pattern, the shape and position of leaves and flower organs. The architecture of a plant depends on the nature and relative arrangement of each of its part; it is, at any given time, the expression of equilibrium between endogenous growth processes and exogenous constraints exerted by the environment. Desert plants architecture is a final product of plant-environment interaction, mutual adaption, thus the interaction and feedback among them would determine the development and succession of desert plant. Natural Haloxylon ammodendron and natural Haloxylon persicum are native dominant species in Zhungar Basin, which also are regarded as the important wind-preventing and sand-fixing plants. Because natural H. ammodendron and natural H. persicum are the characteristic of tolerant to dry, infertile soil, and wind-erosion, both as the ideal desertification combating species have played important roles in the maintenance of stability of fragile desert ecosystem. Therefore, natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron were selected as the objects of study in Zhungar Basin. In order to understand the function and structure characteristics of desert plant and the response and adaptation mechanisms of plant-environment, the plant architecture characteristics (the bifurcation ratio, the branch angle, the branch length, the ratio of branch diameter, and so on) of natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron were studied. The results showed that the over bifurcation ratio and the stepwise bifurcation ratio (SRB 1:2 SRB 2:3) were significant differences in natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron (P<0. 05), and the over bifurcation ratio of natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron were 0. 35 ±0. 23, 0. 50 ±0. 42 and 0. 15 ±0. 05, respectively. However, the branch angle of natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron gradually decreased from first class to fourth class, the angles were less than 90°, and no remarkable difference among them were found (P<0. 05). The order of the branch length of natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron were natural H. persicum > natural H. ammodendron > artificial planting H. ammodendron from first class to fourth class. The average ratio of branch diameter of natural H. ammodendron, natural H. persicum and artificial planting H. ammodendron were 0. 66, 0.68 and 0. 69, respectively, and ratio of branch diameter of artificial planting H. ammodendron was bigger than natural habitat H. ammodendron and H. persicum. As a whole, the architecture of natural habitat H. ammodendron and H. persicum performed a different width "V" type, but artificial planting H. ammodendron was spheroid-ellipse. Therefore the understanding of the desert plant architecture, spatial distribution pattern and micromorphology would contribute to further recognize the ecological adaption mechanism for the desert plants, which will favor desert plant community ecology theory and provide theoretic reference for choosing optimum plant species in desertification combating.


Shi F.,Xinjiang Institute of Ecology and Geography | Zhao C.,Xinjiang Institute of Ecology and Geography | Sun D.,Gansu Research Institute for Water Conservancy | Peng D.,Xinjiang Institute of Ecology and Geography | And 3 more authors.
Stochastic Environmental Research and Risk Assessment | Year: 2012

Conjunctive use of surface and groundwater is an effective approach to relief water resources shortages and its uneven temporal and spatial distribution in arid inland regions of central Asia. In this paper, 16 characteristic factors of water resources and related systems which are sensitive to different types of conjunctive use were selected in order to develop an index system for evaluation impact of conjunctive use, based on the fundamental types of water resources conjunctive use in inland basins. In an attempt to address the issue of spring drought and summer floods in Tailan River Basin in Xinjiang, three scenarios of conjunctive use of surface water and groundwater, well-canal combination, piedmont reservoirs and groundwater reservoirs were investigated. The utilization of water resources and the response of its related systems were evaluated and analyzed quantitatively using the groundwater numerical simulation model (Visual MODFLOW). Furthermore, the impacts of conjunctive use were assessed using the method of multi-level fuzzy comprehensive assessment. The results show that the scheme of combination of Laolongkou piedmont reservoir regulation-groundwater development, is the best in terms of the evaluation of water conjunctive use effects, followed by the well-canal combination. The comprehensive effect of well-canal combination along with groundwater reservoir wouldn't be better than the former both. © 2011 Springer-Verlag.


Sun D.Y.,Gansu Research Institute for Water Conservancy | Zhao C.Y.,Xinjiang Institute of Ecology and Geography | Li Y.H.,Gansu Research Institute for Water Conservancy | Peng D.M.,Xinjiang Institute of Ecology and Geography | Almanaseer N.,Al - Balqa Applied University
Advanced Materials Research | Year: 2014

Based on the land use data observed over the Tailan River Basin (TRB) during the years 1990, 2000, 2005 and 2008, fractal theory is adopted and applied to expound spatial distribution characteristics and variation law of land use change in the arid inland TRB, Xinjiang, China. The results demonstrate spatial fractal characteristics in all land use types. The analysis indicate that the fractal dimensions of different land use types in the TRB are in the order of waters > industrial, mining and residential areas > farmlands > grasslands > unused lands > woodlands in 1990, and in the order of waters > industrial, mining and residential areas > grasslands > farmlands > woodlands > unused lands in 2000, and in the order of waters > industrial, mining and residential areas > grasslands > woodlands > farmlands >unused lands in 2005, and in the order of waters > industrial, mining and residential areas > grasslands > unused lands > woodlands > farmlands in 2008. The fractal dimension values of land use in the TRB in 1990, 2000, 2005 and 2008 are calculated as 1. 5993, 1. 5986, 1. 6079 and 1. 6348 respectively. Fractal dimension of land use in the basin is decreased at first then increased, the spatial structure of land used exhibit complex trend, while the land use types show an increase trend. The stability indexes of spatial structure of land use in the TRB in 1990, 2000, 2005 and 2008 are 0. 1720, 0. 1563, 0. 1435 and 0. 1428 respectively. These values suggest that the stability of the spatial structure of land use in the basin is gradually decreased. © (2014) Trans Tech Publications, Switzerland.


Rockstrom J.,Stockholm Environment Institute | Rockstrom J.,University of Stockholm | Karlberg L.,Stockholm Environment Institute | Karlberg L.,University of Stockholm | And 8 more authors.
Agricultural Water Management | Year: 2010

Rainfed agriculture plays and will continue to play a dominant role in providing food and livelihoods for an increasing world population. We describe the world's semi-arid and dry sub-humid savannah and steppe regions as global hotspots, in terms of water related constraints to food production, high prevalence of malnourishment and poverty, and rapidly increasing food demands. We argue that major water investments in agriculture are required. In these regions yield gaps are large, not due to lack of water per se, but rather due to inefficient management of water, soils, and crops. An assessment of management options indicates that knowledge exists regarding technologies, management systems, and planning methods. A key strategy is to minimise risk for dry spell induced crop failures, which requires an emphasis on water harvesting systems for supplemental irrigation. Large-scale adoption of water harvesting systems will require a paradigm shift in Integrated Water Resource Management (IWRM), in which rainfall is regarded as the entry point for the governance of freshwater, thus incorporating green water resources (sustaining rainfed agriculture and terrestrial ecosystems) and blue water resources (local runoff). The divide between rainfed and irrigated agriculture needs to be reconsidered in favor of a governance, investment, and management paradigm, which considers all water options in agricultural systems. A new focus is needed on the meso-catchment scale, as opposed to the current focus of IWRM on the basin level and the primary focus of agricultural improvements on the farmer's field. We argue that the catchment scale offers the best opportunities for water investments to build resilience in small-scale agricultural systems and to address trade-offs between water for food and other ecosystem functions and services. © 2009.


Cheng Y.F.,Gansu Research Institute for Water Conservancy | Li Y.H.,Gansu Research Institute for Water Conservancy | Hu X.Q.,Gansu Research Institute for Water Conservancy | Wang J.D.,Gansu Research Institute for Water Conservancy | Lu S.C.,Gansu Research Institute for Water Conservancy
Advanced Materials Research | Year: 2014

In order to construct the groundwater numerical simulation model, the study area was determined on the basis of the geological and hydrogeological conditions. Taking Feflow as operating platform, combining GIS with Surfer software, a study area of the structure of three-dimensional aquifer model was established, realizing the 3D visualization of a large area of the complex geological content. Combined with the hydrogeological conditions, three-dimensional geological structure of the model further generalization. The result showed that the aquifer of the vertical was generalized into the unconfined aquifer; based on the characteristics of lithology, structure, parameters and distribution of recharge and discharge in groundwater system, the study area groundwater system was characterized by isotropic saturated-unsaturated numerical flow model, and the equilibrium composition of the elements was analysed in study area, the partition of the aquifer hydrogeological parameters was divided, lay the foundation for groundwater numerical model simulation. © (2014) Trans Tech Publications, Switzerland.


Cheng Y.F.,Gansu Research Institute for Water Conservancy | Wang J.D.,Gansu Research Institute for Water Conservancy | Li Y.H.,Gansu Research Institute for Water Conservancy | Hu X.Q.,Gansu Research Institute for Water Conservancy | Lu S.C.,Gansu Research Institute for Water Conservancy
Advanced Materials Research | Year: 2014

Groundwater is an important resource, it is used for variety of purposes in the inland river basins of arid western China. In recent years, the utilization ratio of surface water has been raised, the groundwater recharge rate from surface water has been reduced, and the aquifer depletion due to over-exploitation, which has led to the decline of groundwater levels and the degradation of eco-environments in the Shiyang River Basin, especially in Minqin. Therefore, the study on the groundwater levels change in recent years, as well as simulating and predicting groundwater levels in the future have gotten very important. The purpose of this study is to analyze the groundwater level variations of the study area. Basin on a conceptual groundwater model and observation groundwater level data, to establish the groundwater flow model by FEFLOW; simulated and validated the groundwater model. Finally the precision of model was evaluated. It was shown that the model could be used to predict the groundwater levels variation under different hypothesis conditions in Shiyang River Basin, which would provide the effective reference to the rational use and management of the groundwater. © (2014) Trans Tech Publications, Switzerland.


Wang J.-D.,Gansu Research Institute for Water Conservancy | Li Y.-H.,Gansu Research Institute for Water Conservancy | Jin Y.-Z.,Gansu Research Institute for Water Conservancy | Zhang X.-M.,Gansu Research Institute for Water Conservancy | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2011

The mountainous ecosystem is important for its unique storage of water and the function of water resources in the northwest mountain-oasis-wilderness ecosystem. Water resources play very important role in the continuous development of economy in the northwest of China. With the use of evaluation indices such as landscape index and landscape diversity, this paper proposes to study on the landscape patterns and biology diversity in the upper reaches of ShiYang River based on remote sensing and GIS, which located in the Qilian mountains. The results show that:1. Landscape in this region shows typical local characteristics and patches were distributed in a ring structure. The main patches were farmland, steppe and shrubbery which were continuous from 2000 to 5000 m and accounted for 74% of the total landscape area. Among these types, the shrubbery and the steppe had very coarse grain size and the highest fractional dimension in this region, displaying high continuity and a dense cluster of larger patches. Compared to the shrubbery and the steppe, the farmland had less patches and finer grain size. Other patches such as the residential land and the impoundment/pond only occupied a very small percentage and are sparsely scattered among the major patch types. 2. Shrubbery, steppe, and farmland changed obviously, but there were some differences in all three types. The shrubbery was mainly transformed to steppe. Steppe was mainly transformed to residential land, and farmland was mainly transformed to bare land/rock. In the past 15 year, the man-made channels had increased.3. There was an increase in fragmentation values in the entire hill-landscape from 1986 to 2000. There was a big difference in the fragmentation in different landscape patches, 0.4637 up to 0.4649 from 1986 to 2000 for farmland, 11.9019 down to 11.7033 for residential land. As the result of invasion of farmland and resident land, the fragmentations of both steppe and forest land went up.4. The order of area of different landscape patches was bare rock\land > arboreous forest > shrubbery > farmland > steppe > impoundment\pond > residential land. While the mean patch area of bare land\rock and resident land increased in nearly 15 years, they were stable for high-forest and the others decreased. The order of patch dominance was steppe > shrubbery > farmland > residential land > bare rock\land > arboreous forest > impoundment\pond. While the patch dominance of impoundment\pond and residential land increased, the others decreased. Steppe and shrubbery were the main landscape patches for nearly 15 years, decreased from 0.4624 to 0.4614, alternatively, shrubbery also decreased from 0.2575 to 0.2568. Their distribution was wide and the area was large. Farmland was the main human landscape, whose dominance indices are 0.1232 and 0.1227, mean patch area of 2.1546km2 and 2.1510km2. Its spatial distribution centralized and it decreased in the period. © 2011 SPIE.


Wang J.,Gansu Research Institute for Water Conservancy | Li Y.,Gansu Research Institute for Water Conservancy | Li Z.,Chinese Hydraulic Engineering Society | Gao J.,Chinese Hydraulic Engineering Society | And 3 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2010

The research studied the Zamu River basin in Qilian Mountains in the arid region in NW China with the use of the distributed hydrological model SWAT (the Soil and Water Assessment Tool that can simulate soil water sediment and nutrient). This paper discussed hydrological response for different vegetation covers at basin and sub-basin scales. The model was able to represent the hydrological cycle even though some discrepancies were observed, probably due to a lack of sufficient rainfall data. This research investigated seven combined cases: forest-deciduous(FRSD), grassland(SPAS),rang-brush (RNGB), FRSD + SPAS, FRSD + RNGB, SPAS + RNGB, and SPAS + URLD (in short for Residential-Low Density). The hydrological responses vary at various spatial scale as well as at various vegetation combinations. At the basin scales, a single vegetation cover would substantially increase the total evapotranspiration amount and basin storage, decrease the runoff, and cause the temporal variations of sustainable water supply. A combination of various vegetation covers would improve the water budget, moderately decrease the total evapotranspiration, increase runoff, ensure the sustainable water supply and decrease the temporal variation of water in the local region. FRSD would increase the soil water capacity and decrease the change of soil water capacity. SPAS would decrease the soil water capacity due to high density roots. Human activity play a negative role in hydrological response in Qilian Mountain and they can reduce the total evapstranspiration and soil water capacity. At the sub-basin scale, the changes of hydrological responses of different vegetation covers showed the same trend as the altitude changes. With the altitude increasing, the depth of runoff decreased and evapotranspiration increased. At one altitude, a change in vegetation would result in different hydrological responses on different slopes, and a slope of 40 degrees is the inflection point where the hydrological responses would change diversely. Based on these analyses, optimized vegetation covers with the best hydrological responses were obtained. FRSD and FRSD + RNGB have very good hydrological response in different terrain in Qilian Mountains. RNGB and RNGB + SPAS also have good hydrological response between 2601 and 3000 m above sea level. FRSD + SPAS performs the good hydrological response between 3000 and 3800 m above sea level. The cold region is above 3800 m above sea level and it's best to keep the current vegetation in the region. According to similar studies that compared the hydrological response for different plants and for different land use, we would suggest that Picea crassifolia and Sabina przewlskii are dominant plants for FRSD, Cupular willow, Potentilla fruticosa and Spiraea salicifolia L. are dominant plants for RNGB, and that Kobresia pygmaea is dominant plant for SPAS.


Yang F.,Yunnan Normal University | Shi Z.T.,Yunnan Normal University | Xiao M.J.,Yunnan Normal University | De Su W.,Yunnan Normal University | And 4 more authors.
Environment, Energy and Applied Technology - Proceedings of the 2014 3rd International Conference on Frontier of Energy and Environment Engineering, ICFEEE 2014 | Year: 2015

The Nanting river basin area is important in local economy development because it is the main grain base of Lingcang, Yunnan Province. An Agricultural Production Capacity comprehensive judgment index model of Nanting river basin has been built with Analytic Hierarchy Process (AHP) based on 15 different factors from 3 different aspects: agricultural input, output and agriculture production environment. The research evaluated the agricultural production capacity of Nanting river basin using this model based on basin area level, Yunnan Province level and national level. The result showed that, the agricultural production capacity of Nanting river basin is fair at basin area level and Province level but worse at national level. © 2015 Taylor & Francis Group, London.


Liu G.,Yunnan Normal University | Shi Z.T.,Yunnan Normal University | De Su W.,Yunnan Normal University | Yang F.,Yunnan Normal University | And 4 more authors.
Environment, Energy and Applied Technology - Proceedings of the 2014 3rd International Conference on Frontier of Energy and Environment Engineering, ICFEEE 2014 | Year: 2015

The precipitation samples of Kunming main city zone were collected from October 2013 to January 2014, and the dissolved state Cr, Mn, Ni, Cu, Zn, Cd, Pb and other heavy metal ions of them were determined with the ICP-MS. Through analyzing and comparing the experimental data with cities at home and abroad, this paper got two sides results. The domestic side: the Pb and Mn contents of Kunming are the minimum, slightly higher contents are Cu, Ni, and Cr, but they are also parts of the downstream level. Abroad: the contents of Mn, Cu, Ni, and Zn are higher than that of Japan and Germany, but the contents of Mn, Pb and Cd are lower than that of Belgium. The contents of Cu, Zn, Pb and Cr of the fall and winter precipitation of Kunming main city zone are all reach at Class II of “Surface Water Quality Standards”, and As and Cd reach at Class I standard, the content of Mn is lower than the standard detection limit, therefor, this provided a guarantee of water security for Kunming main city zone, which depends on precipitation recharge production and living water. © 2015 Taylor & Francis Group, London.

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