1. Department of Soil Science, Faculty of Agriculture and Life Sciences Lincoln University, PO Box 85084, Ellesmere Junction Road/Springs Road, Lincoln 7647 Christchurch New Zealand
2. Institute of Applied Ecology Chinese Academy of Sciences, PO Box 417 Shenyang 110016 China
3. University of Chinese Academy of Sciences Beijing 100049 China
4. Bio‐Protection Research Centre Lincoln University, PO Box 85084, Ellesmere Junction Road/Springs Road, Lincoln 7647 Christchurch New Zealand
5. Department of Forest Systems, Scion Research, PO Box 29237 Christchurch 8540 New Zealand