|
|
|
| Experimental on soil storage capacity and infiltration capability under different vegetation types in the Subalpine of Western Sichuan |
| Huo Xiaopeng1,2,Li Xianwei1,Zhang Jian1,Zhang Xinghua3/sup>,Dai Jie1,Zhang Lianghui1 |
| 1.Provincial Key Laboratory of Ecological Forestry Engineering,Sichuan Agricultural University,625014,Ya'an,Sichuan;2.Southwest Oil & Gasfield Company Safety,Environment & Technology Supervision Research Institute,610213,Chengdu;3.Jintang County of Forestry and Garden Administration Bureau,610400,Jintang, Sichuan: China |
|
|
|
|
Abstract In order to provide scientific basis for evaluating water conservation benefit and allocating stand structure,research of soil water storage capacity and infiltration capability of different vegetation types was carried out in the subalpine region of western Sichuan.The results showed that: 1) The non-capillary water capacity in the 0-30 cm soil layer of the different vegetation types has significant differences,ranged from 363.2 to 691.1 t/hm2,and in the descending order of which is primitive fir(691.1 t/hm2),spruce plantation(687.6 t/hm2),larch plantation(659.8 t/hm2),coniferous and broad-leaves mixed forests(656.3 t/hm2),shrub community(631.8 t/hm2),conifer mixed forests(620.8 t/hm2),crop land(592.2 t/hm2),locust plantation(393.36 t/hm2),bare land(363.2 t/hm2).2) The tested different vegetation types could be classified into four groups,based on soil infiltration capability.The first group,including spruce plantation,coniferous and broad-leaves mixed forest had the strongest soil infiltration capability,and the second group with a stronger soil infiltration capability was composed of larch plantation and conifer mixed forests.The primitive fir and shrub community were classified into the third group with a relatively strong soil infiltration capability,while locust plantation,bare land and crop land belonged to the fourth group.3) The Kostiakov model was used to reflect the soil infiltration of different vegetation types,whose fitting degree is from 0.894 to 0.984(P<0.01),and shows that it is suitable to describe the soil infiltration process of different vegetation types.
|
|
Received: 23 December 2008
|
|
|
|
|
null
|
|
null
|
|
|
|
