Integrating vegetation suitability in sustainable revegetation for the Loess Plateau, China

被引：42

作者：

Wang, Cong ^{[1
]}

Wang, Shuai ^{[2
]}

Fu, Bojie ^{[1
]}

Lu, Yihe ^{[1
]}

Liu, Yuanxin ^{[1
,3
]}

Wu, Xing ^{[1
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, POB 2871, Beijing 100085, Peoples R China

[2] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 XinJieKou Wai St, Beijing 100875, Peoples R China

[3] Capital Normal Univ, Acad Multidisciplinary Studies, 105 Xisanhuanbeilu Rd, Beijing 100048, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2021年 / 759卷

基金：

中国国家自然科学基金;

关键词：

Optimality theory; Suitable boundary; Land use change; Environmental degradation; Ecosystem management; WATER-CONTROLLED ECOSYSTEMS; POTENTIAL NATURAL VEGETATION; SOIL-MOISTURE; HYDROLOGIC PROCESSES; ACTIVE-ROLE; PRECIPITATION GRADIENT; LAND-USE; CARRYING-CAPACITY; PLANT COVERAGE; YELLOW-RIVER;

D O I：

10.1016/j.scitotenv.2020.143572

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Revegetation is accelerating globally due to its benefits for ecosystem restoration, desertification prevention, and climate change mitigation. The Loess Plateau has suffered serious erosion in the past decades, and revegetation projects, such as those under the 'Grain for Green' program, have been conducted for soil erosion prevention. The irrational distribution of artificial plantations had negative consequences, including vegetation degradation, soil drying, and decreases in streamflow. Determining the suitable plant species is critical in guiding the design of revegetation programs and may help delimit the suitable boundaries for artificial plantations. In this study, we used an eco-hydrological model to quantify the suitability of two typical revegetation species (Robinia pseudoacacia and Stipa bungeana) using a developed vegetation suitability equation, which estimates the water use/water stress trade-off. The results showed that R. pseudoacacia was more sensitive to water stress than S. bungeana. The water use of both species varied along the precipitation gradient, and S. bungeana generally had a higher water use than R. pseudoacacia. Suitable areas for R. pseudoacacia were mainly located in the northeastern part of the plateau. By overlaying the suitable boundaries for R. pseudoacacia on the current land cover, we found that the area of forests distributed in unsuitable regions reached 7.31% of the entire Loess Plateau. Converting forests beyond the suitable boundary to grasslands would increase the water yield (0.51%-12.23%) and slightly decrease the soil retention capacity (0.01%-0.08%), resulting in a 'win-win' situation for sustainable plant-soil ecosystems and soil-water conservations. Additionally, the suitable area of R. pseudoacacia is predicted to shrink under projected future drying trends. In conclusion, vegetation suitability in the future planning and design of revegetation projects should be considered to effectively tackle the impacts of environmental degradation and climate change in the Loess Plateau. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：13

共 71 条

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