|
|
|
| Study on benefits of soil and water conservationin Eucalypt plantations inter-cropped with different crops |
| WANG Hui-Li1, 2 , 3 , JIANG Yi1, 2 , 3 , CAO Ji-Zhao1, 2 , 3 , CENG Hui4, LIANG Yan-Fang4, TUN Hai-Chao5, LIU De-Jie6 |
| (1. Guangxi Zhuang Autonomous Region Forestry Research Institute, 530002, Nanning; 2. Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China, 530002, Nanning; 3. Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, 530002, Nanning; 4. Guangxi Qipo State Forest Farm, 530225, Nanning; 5. Guangxi Pingtianshan Forest Farm, 537112, Guigang, Guangxi; 6. Guangxi Bobai State Forest Farm, 537617, Bobai, Guangxi: China) |
|
|
|
|
Abstract In order to select the compound planting pattern with good soil and water conservation benefits and provide a reference to the sustainable development of Eucalypt plantations, the runoff and soil erosion amount of different planting patterns including Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine were observed in standard runoff plots (20 m×5 m). The results showed that: compared with only Eucalyptus plantation, the runoff of other plantations, such as Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine, decreased by 21.07% -31.02%, 33.91% -38.71% and 1.51% -67.12% respectively; soil erosion was obviously affected by human activity in the early-period, but soil erosion was not found in plantation patterns of Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine two years later. Compared with other compound planting patterns, the decrease rate of runoff and soil erosion amount of Eucalyptus-cassava planting pattern was the greatest. Therefore, the Eucalyptus-cassava plantation is considered as an appropriate compound planting pattern with good soil and water conservation benefit.
|
|
Received: 27 October 2011
|
|
|
|
|
|
|
