Derivation of vegetation density and land-use type pattern in mountain regions of Jordan using multi-seasonal SPOT images

2018 ◽  
Vol 77 (10) ◽  
Author(s):  
Zeyad Makhamreh
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong-wang Zhang ◽  
Kai-bo Wang ◽  
Jun Wang ◽  
Changhai Liu ◽  
Zhou-ping Shangguan

AbstractChanges in land use type can lead to variations in soil water characteristics. The objective of this study was to identify the responses of soil water holding capacity (SWHC) and soil water availability (SWA) to land use type (grassland, shrubland and forestland). The soil water characteristic curve describes the relationship between gravimetric water content and soil suction. We measured the soil water characteristic parameters representing SWHC and SWA, which we derived from soil water characteristic curves, in the 0–50 cm soil layer at sites representing three land use types in the Ziwuling forest region, located in the central part of the Loess Plateau, China. Our results showed that the SWHC was higher at the woodland site than the grassland and shrubland, and there was no significant difference between the latter two sites, the trend of SWA was similar to the SWHC. From grassland to woodland, the soil physical properties in the 0–50 cm soil layer partially improved, BD was significantly higher at the grassland site than at the shrubland and woodland sites, the clay and silt contents decreased significantly from grassland to shrubland to woodland and sand content showed the opposite pattern, the soil porosity was higher in the shrubland and woodland than that in the grassland, the soil physical properties across the 0–50 cm soil layer improved. Soil texture, porosity and bulk density were the key factors affecting SWHC and SWA. The results of this study provide insight into the effects of vegetation restoration on local hydrological resources and can inform soil water management and land use planning on the Chinese Loess Plateau.


Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 616
Author(s):  
Jie Gao ◽  
Xuguang Tang ◽  
Shiqiu Lin ◽  
Hongyan Bian

The ecosystem services (ESs) provided by mountain regions can bring about benefits to people living in and around the mountains. Ecosystems in mountain areas are fragile and sensitive to anthropogenic disturbance. Understanding the effect of land use change on ESs and their relationships can lead to sustainable land use management in mountain regions with complex topography. Chongqing, as a typical mountain region, was selected as the site of this research. The long-term impacts of land use change on four key ESs (i.e., water yield (WY), soil conservation (SC), carbon storage (CS), and habitat quality (HQ)) and their relationships were assessed from the past to the future (at five-year intervals, 1995–2050). Three future scenarios were constructed to represent the ecological restoration policy and different socioeconomic developments. From 1995 to 2015, WY and SC experienced overall increases. CS and HQ increased slightly at first and then decreased significantly. A scenario analysis suggested that, if the urban area continues to increase at low altitudes, by 2050, CS and HQ are predicted to decrease moderately. However, great improvements in SC, HQ, and CS are expected to be achieved by the middle of the century if the government continues to make efforts towards vegetation restoration on the steep slopes.


2021 ◽  
Vol 102 ◽  
pp. 105275
Author(s):  
Jiasheng Li ◽  
Xiaomin Guo ◽  
Xiaowei Chuai ◽  
Fangjian Xie ◽  
Feng Yang ◽  
...  

2021 ◽  
Vol 197 ◽  
pp. 111168
Author(s):  
Ming-Lun Zou ◽  
Chuen-Bin Jiang ◽  
Yi-Hua Chen ◽  
Chih-Da Wu ◽  
Shih-Chun Candice Lung ◽  
...  

2021 ◽  
Vol 62 ◽  
pp. 127175
Author(s):  
Chiara Toffolo ◽  
Rodolfo Gentili ◽  
Enrico Banfi ◽  
Chiara Montagnani ◽  
Sarah Caronni ◽  
...  

2014 ◽  
Vol 16 (7) ◽  
pp. 1551-1562 ◽  
Author(s):  
Fotis Sgouridis ◽  
Sami Ullah

Denitrification potential was significantly influenced by land use type where it was lower in organic and forest than in semi-improved and improved grassland soils.


2010 ◽  
Vol 334 (1-2) ◽  
pp. 377-389 ◽  
Author(s):  
Man Lang ◽  
Zu-Cong Cai ◽  
Bruno Mary ◽  
Xiying Hao ◽  
Scott X. Chang

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Mei Zhang ◽  
Xianjin Huang ◽  
Xiaowei Chuai ◽  
Hong Yang ◽  
Li Lai ◽  
...  

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