Point pattern analysis of different life stages of Haloxylon ammodendron in desert-oasis ecotone

• Autorzy: Wang M. , Zhang S. , Chu G.
• Języki publikacji: EN

Abstrakty

EN

The Haloxylon ammodendron natural desert forest is an important vegetation formation and has a large distribution area in Junggar Basin, Xinjiang Province, China. In this paper, H. ammodendron populations were mapped, characterized and the spatial distribution patterns and spatial associations of H. ammodendron among different life stages (seedlings – S, juveniles – J, mature – M, overmature – O) were analyzed using O-ring univariate O11(r) and bivariate O12(r) statistics. We found that: (1) H. ammodendron was a regenerating population. (2) H. ammodendron (S), H. ammodendron (J), and H. ammodendron (M) showed significant aggregations at scale 0-8 m, 0-27 m, and 0-35 m, respectively, whereas H. ammodendron (O) tended to have random distributions at almost all scales. (3) The spatial associations between different life stages of H. ammodendron tended to turn from positive to negative if their size differences are enlarged increasingly. Strongly positive associations were found at small scales for only two pairs: H. ammodendron (S)-H. ammodendron (J), H. ammodendron (J)-H. ammodendron (M).

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2014
• Tom: 23
• Numer: 6
• Opis fizyczny: p.2271-2277,fig.,ref.

Twórcy

autor

Wang M.

• Department of Forestry, Agricultural College, Shihezi University, Shihezi, Xinjiang 832000, China

autor

Zhang S.

• College of Forestry, Northwest AandF University, Yangling 712100, China

autor

Chu G.

• Department of Forestry, Agricultural College, Shihezi University, Shihezi, Xinjiang 832000, China

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