scholarly journals Continuous Monitoring of Tree Responses to Climate Change for Smart Forestry: A Cybernetic Web of Trees

2021 ◽  
pp. 361-398
Author(s):  
Roberto Tognetti ◽  
Riccardo Valentini ◽  
Luca Belelli Marchesini ◽  
Damiano Gianelle ◽  
Pietro Panzacchi ◽  
...  

AbstractTrees are long-lived organisms that contribute to forest development over centuries and beyond. However, trees are vulnerable to increasing natural and anthropic disturbances. Spatially distributed, continuous data are required to predict mortality risk and impact on the fate of forest ecosystems. In order to enable monitoring over sensitive and often remote forest areas that cannot be patrolled regularly, early warning tools/platforms of mortality risk need to be established across regions. Although remote sensing tools are good at detecting change once it has occurred, early warning tools require ecophysiological information that is more easily collected from single trees on the ground.Here, we discuss the requirements for developing and implementing such a tree-based platform to collect and transmit ecophysiological forest observations and environmental measurements from representative forest sites, where the goals are to identify and to monitor ecological tipping points for rapid forest decline. Long-term monitoring of forest research plots will contribute to better understanding of disturbance and the conditions that precede it. International networks of these sites will provide a regional view of susceptibility and impacts and would play an important role in ground-truthing remotely sensed data.

2018 ◽  
Vol 219 ◽  
pp. 28-39
Author(s):  
Michael C. Brooks ◽  
A. Lynn Wood ◽  
Jaehyun Cho ◽  
Christine A.P. Williams ◽  
William Brandon ◽  
...  

Author(s):  
B. Ma ◽  
X. Guo ◽  
J. Jiang ◽  
D. Culibrk ◽  
S. Ding ◽  
...  

Abstract. The China-Europe Railway Express (CER-Express), not only promoted the cooperation between countries and regions across Asia and Europe but also gave rise to remarkable changes in landcover and had a profound effect on the natural environment along the railway in recent years. Effective ways to monitor and assess ecological changes are urgently needed to ensure sustainable development of CER-Express. There are very few existing environmental monitoring studies focusing on the area along the CERExpress. In this paper, we present a study of environmental degradation, which occurred during the construction and operation of CER-Express from 2010 to 2018, based on a comprehensive evaluation index (CEI), which takes three environmental indicators into account and provides a timely and reliable evaluation of environmental changes at large scales. In addition, the environment conditions of the regions and countries along the CER-Express have been quantified and comparatively studied at different scales over different periods, using histograms of mean CEI values. Furthermore, specific causes of environmental degradation in the rail-intensive countries and small-area countries along the railway are discussed. Our results show that the environmental degradation can be detected in most of the rail-intensive countries, such as Germany, Poland, Austria, and Czech Republic along the railway. Therefore, to ensure sustainability of the CER-Express, environmental protection along the railway should be paid more attention to and a reasonable arrangement for the exploitation of CER-Express devised.


Author(s):  
Hussein Ahmed Mohammed, Badria Mohammed Omar Bakr Habib

Changing ecological and socio-economic circumstances make land degradation a major concern in Mediterranean area. The objectives were to examine the spatiotemporal patterns of land use/cover dynamics and quantify the rate and direction of these dynamics in Sirte, Libya. Remotely sensed data including Land cover (MCD12Q1), MODIS NDVI (MOD13A3) for 2001-2014 and TRIMM precipitation data for 2001-2014 were interpreted. The results showed no significant trend; but a decrease in sand dunes and semi-fixed sand dunes with a change rate of 15.66 and 116.37 km² year−1, respectively, in the meantime the vegetation cover has increased with an increasing rate of 112 km² year−1. The results also showed that the high-, and medium degree desertification area has decreased by about (25 %) but showed no significant changes. However, land desertification monitoring and Assessment using remote sensing still needs to be continued and also refined for the purpose of long-term monitoring and the management of fragile environments in the area.


Author(s):  
Barbara S. Minsker ◽  
Charles Davis ◽  
David Dougherty ◽  
Gus Williams

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