Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain
The northern foothills of Yinshan Mountain are situated in northern China’s agricultural and pastoral ecotone, serving as a crucial ecological barrier. To comprehensively assess the impact of grassland resource restoration in this region since the initiation of the Grain-for-Green conversion project...
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MDPI AG
2023-12-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/16/1/99 |
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| author | Yi Yang Hu Liu Wanghai Tao Yuyang Shan |
| author_facet | Yi Yang Hu Liu Wanghai Tao Yuyang Shan |
| author_sort | Yi Yang |
| collection | DOAJ |
| description | The northern foothills of Yinshan Mountain are situated in northern China’s agricultural and pastoral ecotone, serving as a crucial ecological barrier. To comprehensively assess the impact of grassland resource restoration in this region since the initiation of the Grain-for-Green conversion project in 2000, this study analyzes the spatiotemporal characteristics of precipitation use efficiency (<i>PUE</i>) and investigates climate-driven factors during 2001–2021. The results showed that the grassland types at the north foot of Yinshan could be divided into four categories: warm-arid, warm subtropical semidesert (WSS), warm temperate-arid, warm temperate zonal semidesert (WZS), warm temperate-semiarid, warm temperate typical steppe (WTS), and warm temperate-subhumid forest steppe (WFT). The <i>NPP</i> of the four grassland species were 151.34 (WSS), 196.72 (WZS), 283.33 (WTS), and 118.06 gC·m<sup>−2</sup> (WFT), and correspondingly, the <i>PUE</i> of the four grassland species were 0.66 (<i>WSS</i>), 0.66 (<i>WZS</i>), 0.80 (<i>WTS</i>), and 0.57 gC·m<sup>−2</sup>·mm<sup>−1</sup> (WFT). From 2001 to 2021, <i>PUE</i> in grassland showed an overall upward trend, rising from 0.57 to 0.99 gC·m<sup>−2</sup>·mm<sup>−1</sup>. The trend analysis found that the vegetation ecological area of the northern foot of Yinshan became better, of which 54.36% was improved and 15.72% was degraded. It is worth pointing out that WSS had the highest degree of improvement, while WFT was in a degraded state. The climate driving force analysis shows that the regional contribution of precipitation is 19.57%, temperature is 28.33%, potential evapotranspiration is 13.65%, wind speed is 10.79%, and saturated vapor pressure is 27.66%. |
| first_indexed | 2024-03-08T14:55:25Z |
| format | Article |
| id | doaj.art-88bf8445d2d441adbfd906cd88742c42 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-08T14:55:25Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-88bf8445d2d441adbfd906cd88742c422024-01-10T15:11:39ZengMDPI AGWater2073-44412023-12-011619910.3390/w16010099Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan MountainYi Yang0Hu Liu1Wanghai Tao2Yuyang Shan3School of Horticulture, Anhui Agricultural University, Hefei 230036, ChinaYinshanbeilu Grassland Eco-Hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Hohhot 010020, ChinaState Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, ChinaThe northern foothills of Yinshan Mountain are situated in northern China’s agricultural and pastoral ecotone, serving as a crucial ecological barrier. To comprehensively assess the impact of grassland resource restoration in this region since the initiation of the Grain-for-Green conversion project in 2000, this study analyzes the spatiotemporal characteristics of precipitation use efficiency (<i>PUE</i>) and investigates climate-driven factors during 2001–2021. The results showed that the grassland types at the north foot of Yinshan could be divided into four categories: warm-arid, warm subtropical semidesert (WSS), warm temperate-arid, warm temperate zonal semidesert (WZS), warm temperate-semiarid, warm temperate typical steppe (WTS), and warm temperate-subhumid forest steppe (WFT). The <i>NPP</i> of the four grassland species were 151.34 (WSS), 196.72 (WZS), 283.33 (WTS), and 118.06 gC·m<sup>−2</sup> (WFT), and correspondingly, the <i>PUE</i> of the four grassland species were 0.66 (<i>WSS</i>), 0.66 (<i>WZS</i>), 0.80 (<i>WTS</i>), and 0.57 gC·m<sup>−2</sup>·mm<sup>−1</sup> (WFT). From 2001 to 2021, <i>PUE</i> in grassland showed an overall upward trend, rising from 0.57 to 0.99 gC·m<sup>−2</sup>·mm<sup>−1</sup>. The trend analysis found that the vegetation ecological area of the northern foot of Yinshan became better, of which 54.36% was improved and 15.72% was degraded. It is worth pointing out that WSS had the highest degree of improvement, while WFT was in a degraded state. The climate driving force analysis shows that the regional contribution of precipitation is 19.57%, temperature is 28.33%, potential evapotranspiration is 13.65%, wind speed is 10.79%, and saturated vapor pressure is 27.66%.https://www.mdpi.com/2073-4441/16/1/99precipitation use efficiencyspatiotemporal variationnorth foot of Yinshan Mountain |
| spellingShingle | Yi Yang Hu Liu Wanghai Tao Yuyang Shan Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain Water precipitation use efficiency spatiotemporal variation north foot of Yinshan Mountain |
| title | Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain |
| title_full | Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain |
| title_fullStr | Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain |
| title_full_unstemmed | Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain |
| title_short | Spatiotemporal Variation Characteristics and Driving Force Analysis of Precipitation Use Efficiency at the North Foot of Yinshan Mountain |
| title_sort | spatiotemporal variation characteristics and driving force analysis of precipitation use efficiency at the north foot of yinshan mountain |
| topic | precipitation use efficiency spatiotemporal variation north foot of Yinshan Mountain |
| url | https://www.mdpi.com/2073-4441/16/1/99 |
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