Soil Hydrology Process and Rational Use of Soil Water in Desert Regions

Guo, Zhongsheng

doi:10.3390/w13172377

Cited by 13 publications

(21 citation statements)

References 21 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In arid and semi-arid regions, it is difficult for vegetation on the periphery of irrigated areas to obtain groundwater; therefore, SM is mainly derived from precipitation (Guo, 2021b). Due to limited precipitation, the balance between vegetation and SM determines the area's ecological environment.…”

Section: Ecological Effects Evaluation Of the Ctsrb From The Perspect...mentioning

confidence: 99%

Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China

Liu¹,

Yuanyuan²,

Zhou³

et al. 2022

Revista Brasileira De Ciência Do Solo

View full text Add to dashboard Cite

Soil moisture (SM) plays an important role in regulating the global water cycle, especially in arid areas, and is one of the main indicators of ecological environmental health. Although traditional methods can accurately measure SM at a single sample site, they are limited in large-scale and dynamic SM monitoring. Therefore, we used the Landsat images as the data source and the soil adjusted vegetation index (SAVI) to build the adjusted SAVI (aSAVI) index by modifying the soil adjustment parameter L and introducing the short-wave infrared band. According to the theory of temperature vegetation dryness index (TVDI) and feature space, we introduced a model, combined the measured SM data (Minqin Basin, China) through a comparative analysis of four vegetation indices (NDVI, SAVI, MSAVI, aSAVI) determine the optimal model. Taking the Minqin Basin as the study area, the spatiotemporal variation characteristics of SM in three sub-regions (the entire study area, irrigated region, and periphery of the irrigated regions) were quantitatively analyzed and compared in four different periods: pre-Comprehensive Treatment Program of the Shiyang River Basin (pre-CTSRB) (2000)(2001)(2002)(2003)(2004)(2005), CTSRB I (2006-2010), CTSRB II (2011-2016), and CTSRB-end (2017-2021) to evaluate the ecological restoration effects of treatment programs from the SM perspective. The results showed that: 1) SM values derived from TVDI inversion and the aSAVI were more accurate, and the model sensitivity decreased with soil depth; 2) the mean value of SM fluctuated across the four periods but decreased slightly over the entire time series. The spatial variations of the SM were characterized by a "descending then ascending" trend. Soil moisture increased in 21.35 % of areas at 0.00-0.10 m in the past 22 years, and 59.66 % at 0.10-0.20 m. There was a negative correlation between the mean variation trend of SM and the percentage of area where SM fell in different periods; 3) the treatment program positively affected the ecological restoration of the Minqin Basin from the SM perspective. The area where SM increased was larger than that of decreasing SM, especially in 0.10-0.20 m soil layer. The increase can promote growth and confer resistance to desertification.

show abstract

Section: Ecological Effects Evaluation Of the Ctsrb From The Perspect...mentioning

confidence: 99%

Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China

Liu¹,

Yuanyuan²,

Zhou³

et al. 2022

Revista Brasileira De Ciência Do Solo

View full text Add to dashboard Cite

show abstract

“…However, soil water mainly comes from precipitation; and the Maximum Infiltration Depth (MID) and soil water supplies are limited in this region [3][4][5]. Thus, root depth can exceed the depth of soil water recharge from rainwater, leading to severe desiccation of soil in rooting soil layer [6,7]. Consequently, the combination of increased water use by plants and low water recharge rates has led to soil deterioration, receding vegetation and crop failures on the Loess Plateau or other water-limited regions in the perennial artificial grass and forest land [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, root depth can exceed the depth of soil water recharge from rainwater, leading to severe desiccation of soil in rooting soil layer [6,7]. Consequently, the combination of increased water use by plants and low water recharge rates has led to soil deterioration, receding vegetation and crop failures on the Loess Plateau or other water-limited regions in the perennial artificial grass and forest land [7][8][9][10]. Such soil deterioration can adversely affect ecosystem function and services and the stability of manmade forest and vegetation ecosystems, and consequently reduces the ecological, economic and societal benefits of forest and other plant communities.…”

Section: Introductionmentioning

confidence: 99%

“…Managing an ecological system to maximize the benefits of vegetation requires establishing a balance between soil water supply and soil water consumption over a long time in waterlimited regions. This is because a rapid increase in density and the degree of coverage of forest and/or other plant communities not only effectively increases coverage and reduces runoff and erosion [11][12][13][14]7] but also reduces soil water supply and increases soil water consumption by vegetation and evapotranspiration [16], which can lead to imbalance in the RBPGSW. Therefore, there should be limits to vegetation restoration in a region where the natural resources (including water, soil water, soil nutrients or land resources) are scarce.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Regulation Mechanism of Plant Growth Process

Guo

2023

annagriccropsci

View full text Add to dashboard Cite

Aims: Non-native plantation and grass can effectively conserve soil and water and improve ecological environment but sometime soil desiccation occurs, led to severe soil degradation, vegetation decline and crop failure, which influence forest and grass high-quality sustainable development and Agriculture high quality production, so it is necessary to regulate the plant resources relationship and get maximum yield and benefits. However, there is a lack of a universally accepted theory to provide guidance of sustainable use of soil water resources and high-quality sustainable management of forest and Agriculture high quality production p in such regions. Purpose of the paper is to introduce the theory of plant resources relationship regulation. Methods: Different caragana plant density experiment plot was established in the same condition, the precipitation, plant growth, soil water content at different depth was investigated, the wilt coefficient at different soil depth, the maximum infiltration, soil water resources use limit by plants and the theory of soil water vegetation carrying capacity was dealt with. Results: The results showed that the theories of plant resources relationship regulation include the Resources Use Limit by Plants and Vegetation Carrying Capacity. Resources Use Limit by Plants and Vegetation Carrying Capacity include Space Resources Use Limit by Plants and Space Vegetation Carrying Capacity in soil water and soil nutrient rich regions, Soil water Vegetation Carrying Capacity and Soil Nutrient Resources Use Limit by Plants and Soil Nutrient Vegetation Carrying Capacity. The Soil water Vegetation Carrying Capacity is the population in a plant population or plant density of indicator plants in a plant community when the resources supply is equal to soil water consumption in the root zone and a given time, especially and changes with plant community type, location and time. Conclusions: The degree of coverage, productivity and benefits of a plant community when population quantity of an indicator plant equals SWVCC should be the theoretical basis for sustainable use of soil water resources, high-quality sustainable management of forest and grass and Agriculture high-quality production.

show abstract

“…Soil water is the most important factors in uencing plant growth in the loess plateau. Because rain is shortage, soil drought often happens, which cause soil degradation, vegetation decline and crop failure in the loess plateau (Guo and Shao, 2013,2021a,2021b. The soil water resources are the soil water storage in a root soil, and soil water resources use limit by plant refers to the amount of water stored within the maximum in ltration depth, in which the soil moisture content at each layer is equal to the withering coe cient (Guo, 2010,2021a andb).…”

Section: Introductionmentioning

confidence: 99%

Forecasting Soil Moisture In The Soil Under The Caragana Shrubland Using Wavelet Analysis And NARX Neural Network

Bai

Guo

2021

Preprint

View full text Add to dashboard Cite

Purpose: It is important for sustainable use of soil water resources to forecast soil moisture in forestland of water-limited regions. There are some soil moisture models. However, there is not a better method to forecast soil moisture.Methods: The change of soil moisture with time were investigated and the data of soil moisture were divided into a low frequency and a high frequency component using wavelet analysis, and then NARX neural network was used to build model I and model II. For model I, low frequency component was the input variable, and for model II, low frequency component and high frequency component were predicted.Results: the average relative error for model I is 3.5% and for model II is 0.3%. The average relative error of predicted soil moisture in100cm layer using model II is 0.8%, then soil water content in 40 cm and 200 cm soil depth is selected and the forecast errors are 4.9 % and 0.4 %.Using model II to predict soil water is well．Conclusion: Predicting soil water will be important for sustainable use of soil water resource and controlling soil degradation, vegetation decline and crop failure in water limited regions.

show abstract

Soil Hydrology Process and Rational Use of Soil Water in Desert Regions

Cited by 13 publications

References 21 publications

Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China

Inversion of soil moisture and its feedback on ecological restoration in arid and semi-arid areas of northwest China

Regulation Mechanism of Plant Growth Process

Forecasting Soil Moisture In The Soil Under The Caragana Shrubland Using Wavelet Analysis And NARX Neural Network

Contact Info

Product

Resources

About