Climate warming decelerates growth of <i>Sabina tibetica</i> in Lhasa River area of Tibet

Songlin, 石松林 Shi; Tiantian, 靳甜甜 Jin; Guohua, 刘国华 Liu; Dongbo, 王东波 Wang; Jingsheng, 王景升 Wang; Kui, 李魁 Li

doi:10.5846/stxb201807131522

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“…Therefore, the water-conservation function of the forest ecosystem has received a lot of attention, and increasing the forest cover area is a practical approach to improving water-conservation capacity. In the context of climate change stresses on the water-holding capacity of the forest [9,10], it is an interesting question to discuss how land-use patterns can be optimized to efficiently utilize the water-conservation capacity of forests.…”

Section: Introductionmentioning

confidence: 99%

Influence of Grain on Green Patterns and Their Underlying Surface Characteristics on Water Conservation: A Case Study in a Semiarid Area

Pan,

Wang,

Zuo

et al. 2023

Forests

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Water-conservation enhancement is a crucial objective of regional ecological restoration projects in arid and semiarid areas, and it is significantly influenced by land use/cover change (LUCC). The Grain for Green Project (GFGP) is a common strategy for ecological restoration. However, insufficient attention has been paid to the impact of reforestation patterns and the underlying surface characteristics on the effectiveness of GFGP in enhancing water conservation. In this study, a Soil and Water Assessment Tool (SWAT) scenario-based simulation was conducted to assess changes in water-conservation depth (WCD) in the Zhangjiakou section of the Guanting Reservoir basin. Redundancy analysis (RDA) and a mixed linear model were employed to determine the effects of different reforestation patterns and their underlying slope gradient and soil-type characteristics on WCD variation. The results showed that there were differences in the effect characteristics of reforestation patterns and different vegetation types on WCD changes; the effectiveness of increased water conservation is associated with the adaptation of reforestation plants to underlying characteristics. Returning farmland to evergreen forests was the most effective approach, leading to a relative increase in WCD that was 2.6 times greater than the relative increase in total WCD. WCD decreased with the slope gradient, with WCD decreasing by 0.2 mm for every 1° increase in slope. Converting grassland to evergreen forests on slopes greater than 16.19° and converting deciduous forests to grassland on slopes less than 16.19° would further increase WCD, promoting the synergistic development of ecosystem services. This study provides insights into the development of more efficient reforestation strategies to enhance water conservation in a complex terrain area.

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Section: Introductionmentioning

confidence: 99%