Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (11): 2322-2328.DOI: 10.3969/j.issn.1000-2561.2020.11.025

• Agricultural Ecology & Environmental Protection • Previous Articles     Next Articles

Single-wood Health Assessment in Casuarina Protection Forests at Different Distances from the Coastline

LIU Hena1,2,LI Maojin3,WANG Yanyan1,2,JIANG Chuanyang3,LI Kunling1,2,WU Chengzhen4,CHEN Can1,2,*()   

  1. 1. School of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
    2. Collegiate Key Lab of Forest-Ecosystem Process and Management in Fujian, Fuzhou, Fujian 350002, China
    3. Fujian Quanzhou Forestry Bureau, Quanzhou, Fujian 362000, China
    4. Wuyi University, Nanping, Fujian 354300, China
  • Received:2019-10-29 Revised:2019-12-22 Online:2020-11-25 Published:2020-12-23
  • Contact: CHEN Can


Single-wood health assessment is an important part of forest health monitoring. Coast protect forest is one of the critical plantation ecosystems in China, which is damaged to some extent in a strong variation environment with intense differences from the ocean to the land. But, at present the research on the assessment of forest health in a single-wood scale and in different distances from the coast line is so scarce due to overlooking the health of the trees growing in the weakness of the ecosystem. In order to make up the gap, we took different Casuarina forests as the study objects, divided their distances into five gradients from near to far, which was from the forest edge facing the sea to the forest interior, and established a single-wood health assessment system including the indexes of root damage, crown deciduous degree, canopy transparency, crown overlap, crown dieback, canopy weight and crown deviation. The overall health of single-wood trees in the coastal Casuarina forest was poor with 17.78% unhealthy and only 4.44% in good health. The different gradients of the coastal Casuarina forest showed obvious significant from the coast forest trees to the interior ones. The unhealthy grade trees in the first gradient were up to 33.33%, which was significantly more than that in the second one (P<0.05), and there were no high grade trees. The unhealthy trees in the fifth gradient were significantly less than that in the third and fourth gradients (P<0.05) with 93.33% of the health and above grades. The study would lay a basis for the health management of coastal Casuarina protection forests.

Key words: single-wood health assessment, coastal shelter forest, forest health, Casuarina

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