Publications by authors named "Shunde Su"
Tree parameter extraction in plantation based on airborne LiDAR data.
Ying Yong Sheng Tai Xue Bao
February 2024
Article Synopsis
- This study proposes a method to accurately extract tree parameters from airborne LiDAR data, which is essential for estimating wood volume and stand stocking in plantations.
- The process involves data pre-processing, ground filtering, and using algorithms for individual tree segmentation and parameter extraction, with high-density point cloud data collected from a timber plantation in Fujian Province.
- Results indicate that using a 0.3 m resolution canopy height model (CHM) with a watershed algorithm achieved a high accuracy of 91.1% for tree segmentation, and the best segmentation occurred when using crown diameter for distance thresholds, resulting in a 91.3% accuracy for individual tree parameters.
Background: Pine wood nematode (PWN; Bursaphelenchus xylophilus) is the causative agent of pine wilt disease (PWD), which is considered the most dangerous biohazard to conifer trees globally. The transmission of PWN relies on insect vectors, particularly the Japanese pine sawyer (JPS; Monochamus alternatus). However, the molecular mechanism underlying PWN-JPS assembly remains largely unknown.
View Article and Find Full Text PDFPine wilt disease (PWD) is caused by the pine wood nematode (PWN, Bursaphelenchus xylophilus) and transmitted by a vector insect, the Monochamus alternatus. The PWN has caused much extensive damage to pine-dominated forest ecosystems. Trunk injection of emamectin benzoate (EB) has been found to be the most useful protective measure against the PWN, due to its low effective dose and long residence time in the field.
View Article and Find Full Text PDFIntroduction: Pine wilt disease (PWD) is responsible for extensive economic and ecological damage to Pinus spp. forests and plantations worldwide. PWD is caused by the pine wood nematode (PWN, ) and transmitted into pine trees by a vector insect, the Japanese pine sawyer (JPS, ).
View Article and Find Full Text PDFArticle Synopsis
- Studying population genetics is important for improving coniferous tree species through breeding techniques.
- High-quality SNP markers were developed using RAD-seq, focusing on 233 Chinese firs from a 4-cycle breeding program, revealing significant genetic diversity within the population.
- The low genetic differentiation among breeding generations and provenances suggests that breeding practices have led to a mixed genetic structure, which could guide future selective breeding efforts.
(Lamb.)Hook is an important economic timber tree in China. However, its genome characteristics have not been extensively assessed.
View Article and Find Full Text PDFFlooding is one of the main abiotic stresses suffered by plants. Plants respond to flooding stress through regulating their morphological structure, endogenous hormone biosynthesis, and genetic signaling transduction. We previously found that Fokienia hodginsii varieties originating from Gutian exhibited typical flooding tolerance traits compared to three other provenances (Yongzhou, Sanming, Nanping), expressed as increased height, longer diameter at breast height (DBH), and smaller branch angle.
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