کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6541806 | 1421346 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Soil moisture decline following the plantation of Robinia pseudoacacia forests: Evidence from the Loess Plateau
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Soil moisture decline following the plantation of Robinia pseudoacacia forests: Evidence from the Loess Plateau Soil moisture decline following the plantation of Robinia pseudoacacia forests: Evidence from the Loess Plateau](/preview/png/6541806.png)
چکیده انگلیسی
Soil moisture is the foundation of ecosystem sustainability in arid and semi-arid regions, and the spatial-temporal details of soil moisture dynamics of afforested areas can benefit for land use management in water-shortage regions such as the Loess Plateau of China. In this study, spatial-temporal variations in soil moisture under Robinia pseudoacacia plantations on the Loess Plateau were analyzed. A total of 147 observations of soil moisture content (SMC) data to a depth of 500â¯cm soil profile were collected in 23 counties via field transect surveys and analyses of published literature. The results suggested that (1) the depth-averaged SMC was generally lower under forest sites than under cropland, both in the shallow layers and in the deep profiles. This finding implied that, compared with the native vegetation, the introduced R. pseudoacacia plantations caused intense reductions in soil moisture. (2) SMC was positively correlated with climatic factors (mean annual precipitation (MAP), mean annual temperature (MAT), and the Palmer drought severity index (PDSI)), indicating that the SMC under R. pseudoacacia plantations was highly consistent with the hydrothermal conditions at the regional scale. (3) The decreasing amplitude of SMC was linearly related to the increasing number of restoration years, especially in the areas below the 500-550â¯mm precipitation threshold. This finding showed that the restoration ageing sequence was an influential factor that affected the regional SMC variation in R. pseudoacacia plantations on the Loess Plateau. Our results suggest that afforestation activities should be avoided if the local total precipitation is insufficient for replenishing the soil moisture and that local tree species with a lower demand for water resources should be considered a top priority for further afforestation of the Loess Plateau.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 412, 15 March 2018, Pages 62-69
Journal: Forest Ecology and Management - Volume 412, 15 March 2018, Pages 62-69
نویسندگان
Haibin Liang, Yayong Xue, Zongshan Li, Shuai Wang, Xing Wu, Guangyao Gao, Guohua Liu, Bojie Fu,