Purification processes, ecological functions, planning and design of riparian buffer zones in agricultural watersheds

Mander, Ülo; Hayakawa, Yumiko; Kuusemets, Valdo

doi:10.1016/j.ecoleng.2005.01.015

Cited by 133 publications

(79 citation statements)

References 36 publications

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“…In bigger lakes interactions are local, whereas in rivers the management of tree vegetation might control their overgrowing (Mander et al, 2005).…”

Section: Figure 2 the Length Of Shadow Rushes Width And Length Of Tmentioning

confidence: 99%

The Effect of Riparian Forest Shade on the Structural Characteristics of Macrophytes in a Mid-Forest Lake

Sender¹

2016

Appl Ecol Env Res

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Abstract. The aim of the study was to evaluate whether riparian trees limit growth of aquatic plants in lakes. In the studied lake, sections of the littoral zone were shaded to different degrees. The maximum extent of shading in the studied lake did not exceed 15 m. Regardless of the amount of light reaching the lake three groups of macrophytes developed. The data suggest that shading by riparian vegetation was not limiting to growth of all aquatic plants in the studied lake but did significantly limit development of macrophyte communities. The extent of shading was correlated with both the structure of macrophyte communities in addition to their range. In shady areas density, colonization depth, biomass and diversity index of emergent macrophytes were significantly lower. Submerged macrophytes in the lake were generally outside the scope of shadow impact. Only macrophytes occurring between 0.5 and 1 m depth were influenced by shade. Generally, submerged macrophyes were outside of the influence of shade. However, along the northern shore, lush growth of adjacent rushes may have effected submerged macrophytes and in these areas their measured values (biomass, density, abundance) were lower. In the southern part of the lake, rushes achieve lower density and extent of occurrence, but submerged macrophytes grew better, and both biomass and species richness were higher than along northern shores.

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“…In bigger lakes interactions are local, whereas in rivers the management of tree vegetation might control their overgrowing (Mander et al, 2005).…”

Section: Figure 2 the Length Of Shadow Rushes Width And Length Of Tmentioning

confidence: 99%

The Effect of Riparian Forest Shade on the Structural Characteristics of Macrophytes in a Mid-Forest Lake

Sender¹

2016

Appl Ecol Env Res

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“…Riparian zones provide several valuable ecosystem services, such as filtering polluted surface and subsurface flows, providing biota with habitat, protecting river banks from erosion, improving the microclimate in rivers and adjacent fields, and providing hydrologic connectivity across the landscape (Mander et al 2005). Greater attention has been focused on riparian zones due to their importance, especially in the urban environment (Balestrini et al 2011;Borin et al 2004;Bradley et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal variability in nitrous oxide and methane emissions in urban riparian zones of the Pearl River Delta

Zhang

Huang

Yang

et al. 2015

Environ Sci Pollut Res

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Spatial and temporal variability in nitrous oxide and methane emissions were quantified in three seasons using closed chambers in three riparian zone locations of three branches of the Pearl River, Guangzhou, China. The sampling sites were selected in a rapidly developing urban area of Guangzhou and represented a pollution gradient. The results show that urban riparian landscapes can be large source areas for CH 4 and N 2 O, with fluxes of −0.035 ∼ 32.30 mg m −2 h −1 and −5.49 ∼ 37.31 μg m −2 h −1 , respectively. River water quality, sediment texture, and NH 4 -N and NO 3 -N concentrations correlated with N 2 O and CH 4 emission rates. The riparian zones of the more seriously polluted tributaries showed higher greenhouse gas fluxes than that of the less polluted main stem of the Pearl River. Rain events increased emissions of CH 4 by 6.5∼21.3 times and N 2 O by 2.2∼5.7 times. The lower concentrations of heavy metals increased the activity of denitrifying enzymes while inhibited the methane producing pathways. This work demonstrates that rapidly developing urban areas are an important source of greenhouse gas emissions, which is conditioned by various environmental factors.

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“…Compared with the elevated nitrate concentrations in some shallow groundwater samples, the significantly low levels of nitrate in river water (S4) indicate that the natural water quality 20 enhancement has been performed by the natural wetlands (Zedler, 2003;Mander et al, 2005), which is defined as "wetlands function" (Maltby, 2009). From a sustainability perspective, reclamation of wetlands for agriculture near the river should therefore be strongly discouraged in order to increase the wetlands function, otherwise the groundwater will continue to be deteriorated.…”

Section: Implications On Agricultural Sustainabilitymentioning

confidence: 99%

Is groundwater sufficient to support sustainable irrigation agriculture in a reclaimed wetland region?

Pang

et al. 2016

Preprint

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Abstract. Water resources management is the key to sustainable agriculture and wetlands ecosystems. Understanding whether agriculture with groundwater-dominated irrigation is sustainable is sometimes difficult due to complex hydrological 10 conditions, e.g. in the case of a wetland region. To investigate this issue we have chosen a wetland and rice paddy fields co-existing area with a groundwater-dominated irrigation scheme in the Sanjiang Plain, NE China, which has been reclaimed from lake-swamp type of natural wetlands since the 1950s. Using a multi-tracer approach involving water chemistry and isotopes ( 2 H, 18 O, 3 H, 13 C, 14 C), integrated with data on groundwater regime, we demonstrate that it is possible to delineate the mechanism of hydraulic interactions between groundwater and river, ponds and rice paddy fields in the wetlands terrain. 15Regional variations in hydrogeology have been found to be the main factors controlling groundwater recharge and regime.Groundwater in the confined Quaternary aquifer with ages over 50 years and evidenced by depleted heavy isotopes is recharged by lateral flow from nearby mountains. The groundwater is in general not affected by surface activities, however, its yield is limited. Groundwater alone is not sufficient to support sustainable irrigation agriculture. On the contrary, the unconfined Quaternary aquifer is recharged by rainfall or riverbank infiltration, especially at localities near the rivers. It is 20 more likely for the groundwater to be affected by agricultural activities, though its yield is rather abundant. This paper alsoindicates that utilization and planning of water resources for reclaimed agriculture can be improved through hydrological studies using environmental tracers.

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Purification processes, ecological functions, planning and design of riparian buffer zones in agricultural watersheds

Cited by 133 publications

References 36 publications

The Effect of Riparian Forest Shade on the Structural Characteristics of Macrophytes in a Mid-Forest Lake

The Effect of Riparian Forest Shade on the Structural Characteristics of Macrophytes in a Mid-Forest Lake

Spatial and temporal variability in nitrous oxide and methane emissions in urban riparian zones of the Pearl River Delta

Is groundwater sufficient to support sustainable irrigation agriculture in a reclaimed wetland region?

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